Problem Weeds in Soybeans

SPREADING ATRIPLEX CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES 

CHRISTY SHROPSHIRE, Peter Sikkema 

Experiment ID: PWS00A2A 

CROP: GLXMA, SOYBEAN (RR) (PIONEER 92B51). Planted: May-24-00, 480000 SEEDS/HA, 4 CM Deep, 75 CM Row Width. Emerged On: Jun-4-00 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: J3-A. 

Site Description: %OM: 6.1 %Sand: 33.1 %Silt: 31.6 %Clay: 35.3 pH: 7.7 

APPLICATION DESCRIPTION STAGE AT APPLICATION 

Application: A Application: A 

Date : May-21-00 Crop 1 GLXMA NOT PLANT 

Time of Day: 15:30 Height : 

Method : 

Timing : PP Weed 1 ATXPA C-14 LF 

Placement : 

Stg.Scale: 

Air Temp. : 22.1 C 

Density : 27 M2 

% Humidity : 43 Weed 2 CHEAL NOT EMERG 

Wind Speed : 8 KM/H 

Stg.Scale: 

Dew Present: N Density : 

Soil Moist.: 

Weed 3 AMBEL NOT EMERG 

Cloud Cover: 50% 

Stg.Scale: 

Equipment : CO2 Backp Density : 

Pressure : 207 kPa Weed 4 ABUTH NOT EMERG 

Nozzle Type: FLAT FAN Stg.Scale: 

Nozzle Size: XR8002 Density : 

Noz.Spacing: 50 CM 

Boom Length: 2 M 

Boom Height: 48 CM 

Carrier : WATER 

Appl.Volume: 200 L/ha 

Propellant : CO2 

Weed Code ATXPA CHEAL AMBEL ABUTH ATXPA 

Crop Code GLXMA GLXMA 

Rating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL 

Rating Unit % % % % % % % 

Rating Date Jun-18-00 Jul-7-00 Jul-7-00 Jul-7-00 Jul-7-00 Jul-7-00 Jul-27-00 

Crop Stage 1 TRI 2-5 TRI 

Weed Stage 3-20+ LF 4-20 LF 6-20+ LF 3-8 LF 4-20+ LF 

Weed Density, Unit 12 M2 2 M2 10 M2 3.5 M2 8.5 M2 

Trt Treatment Rate Grow Appl 

No. Name Rate Unit Stg Code 1 2 3 4 5 6 7 

1 CHECK (WEEDY) 0 b 0 a 0 c 0 c 0 c 0 c 0 c 

2 GLYPHOSATE-TRANSORB 900 G A/HA PP A 0 b 0 a 33 b 43 b 94 b 92 b 14 c 

3 GLYPHOSATE-TRANSORB 900 G A/HA PP A 0 b 0 a 98 a 100 a 99 a 99 a 94 ab 

FLUMETSULAM/METOLACHLOR 2215 G A/HA PP A 

4 GLYPHOSATE-TRANSORB 900 G A/HA PP A 2 a 0 a 89 a 100 a 94 b 99 a 80 ab 

FOE5043/METRIBUZIN 840 G A/HA PP A 

5 GLYPHOSATE-TRANSORB 900 G A/HA PP A 1 b 0 a 98 a 100 a 97 ab 98 a 93 ab 

METRIBUZIN 560 G A/HA PP A 

6 GLYPHOSATE-TRANSORB 900 G A/HA PP A 0 b 0 a 100 a 100 a 98 a 100 a 99 a 


7 GLYPHOSATE-TRANSORB 900 G A/HA PP A 0 b 0 a 93 a 98 a 98 a 100 a 76 b 

IMAZETHAPYR 100 G A/HA PP A 

LSD (P=.05) 0.7 0.0 15.4 28.3 3.2 5.1 18.4 

Standard Deviation 0.5 0.0 10.4 19.0 2.1 3.4 12.4 

CV 127.19 0.0 14.27 24.65 2.58 4.11 19.1 

Means followed by same letter do not significantly differ (P=.05, Duncan's New MRT) 

Column 1 Footnote: PINCHING OF MARGIN ON 1ST TRIFOLIATE. 

169

SPREADING ATRIPLEX CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES 



Weed Code CHEAL AMBEL ABUTH 

Rating Data Type 

CONTROL CONTROL CONTROL 

Rating Unit % % % 

Rating Date Jul-27-00 Jul-27-00 Jul-27-00 

Weed Stage 6-20+ LF 6-20+ LF 4 LF 

Weed Density, Unit 4.5 M2 15 M2 1.5 M2 


No. Name Rate Unit Stg Code 8 9 10 

1 CHECK (WEEDY) 0 c 0 c 0.0 c 

2 GLYPHOSATE-TRANSORB 900 G A/HA PP A 71 b 89 ab 91.3 ab 

3 GLYPHOSATE-TRANSORB 900 G A/HA PP A 98 a 94 a 94.7 a 

FLUMETSULAM/METOLACHLOR 2215 G A/HA PP A 

4 GLYPHOSATE-TRANSORB 900 G A/HA PP A 98 a 80 b 91.3 ab 

FOE5043/METRIBUZIN 840 G A/HA PP A 

5 GLYPHOSATE-TRANSORB 900 G A/HA PP A 99 a 86 ab 85.0 b 


6 GLYPHOSATE-TRANSORB 900 G A/HA PP A 99 a 95 a 97.7 a 


7 GLYPHOSATE-TRANSORB 900 G A/HA PP A 85 ab 89 ab 98.3 a 

IMAZETHAPYR 100 G A/HA PP A 

LSD (P=.05) 19.9 10.9 8.52 

Standard Deviation 13.4 7.3 4.79 

CV 17.01 9.63 6.0 


Trial Comments 

THERE WAS NO COMMERCIALLY SIGNIFICANT INJURY IN SOYBEANS WITH THE PREPLANT HERBICIDE APPLICATIONS EVALUATED. EXCELLENT 

CONTROL OF ATXPA WAS OBTAINED WITH PREPLANT TANKMIXES OF GLYPHOSATE PLUS FLUMETSULAM/METOLACHLOR OR METRIBUZIN. THE 

TANKMIXES OF GLYPHOSATE PLUS IMAZETHAPYR OR FOE5043/METRIBUZIN DID NOT PROVIDE AS GOOD CONTROL OF ATXPA. GOOD TO 

EXCELLENT FULL SEASON CONTROL OF CHEAL, AMBEL AND ABUTH WAS PROVIDED BY ALL OF THE HERBICIDE TREATMENTS EVALUATED. 

170

SPREADING ATRIPLEX CONTROL IN SOYBEANS 

Christy Shropshire, Peter Sikkema 

Experiment ID: PWS00C9A 

CROP: GLXMA, SOYBEAN (RR) (PIONEER 92B51). Planted: May-24-00, 480000 SEEDS/HA, 4 CM Deep, 75 CM Row Width. 

Emerrged On: Jun-4-00 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: J3-A. 




Date : Jul-6-00 Crop 1 GLXMA 2-4 TRI 

Time of Day: 9:00 Height : 25 CM 

Method : 

Timing : POST Weed 1 ATXPA 5-20+ LF 

Placement : 

Stg.Scale: 5-30 CM 



% Humidity : 65 Weed 2 AMBEL 3-20 LF 



Dew Present: Y 


Soil Moist.: AT DEPTH 


Equipment : CO2 Backp 

Pressure : 207 kPa 

Nozzle Type: FLAT FAN 

Nozzle Size: XR8002 







Weed Code 

ATXPA 

Crop Code GLXMA GLXMA GLXMA GLXMA 

Rating Data Type INJURY INJURY INJURY INJURY CONTROL 

Rating Unit % % % % % 

Rating Date Jul-12-00 Jul-12-00 Jul-12-00 Jul-27-00 Jul-27-00 

Crop Stage 5 TRI 5 TRI 5 TRI FLWR/POD 

Weed Stage 

10-20+ L 

Weed Density, Unit 

9 M2 


No. Name Rate Unit Stg Code 1 2 3 4 5 

1 CHECK (WEEDY) 0.0 g 0.0 h 0.0 g 0.0 b 0.0 f 

2 ACIFLUORFEN 600 G A/HA 1-2 TR A 7.3 c 1.3 gh 18.8 abc 0.0 b 15.0 ef 

3 FOMESAFEN 240 G A/HA 1-2 TR A 9.3 b 0.0 h 13.8 b-e 0.0 b 12.5 ef 

TURBOCHARGE 0.500 % V/V 1-2 TR A 

4 BENTAZON (FORTE) 1080 G A/HA 1-2 TR A 4.3 de 0.3 h 2.5 fg 0.0 b 60.0 c 

5 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 0.5 g 6.0 de 22.5 ab 0.0 b 62.5 bc 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 0.5 g 9.8 bc 13.8 b-e 0.0 b 25.0 def 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 2.8 ef 11.3 b 23.8 a 0.0 b 52.5 cd 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 0.0 g 2.5 fgh 7.5 d-g 0.0 b 15.0 ef 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 100 G A/HA 1-2 TR A 2.3 f 7.8 cd 16.3 a-d 0.0 b 10.0 ef 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 75 G A/HA 1-2 TR A 5.0 d 4.5 ef 5.0 efg 0.0 b 43.8 cd 

BENTAZON (FORTE) 840 G A/HA 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 25 G A/HA 1-2 TR A 3.0 ef 3.8 efg 11.3 c-f 0.0 b 43.8 cd 

FOMESAFEN 200 G A/HA 1-2 TR A 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 25 G A/HA 1-2 TR A 3.3 ef 3.8 efg 2.5 fg 0.0 b 30.0 de 


UAN 28% 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 900 G A/HA 1-2 TR A 0.0 g 0.0 h 0.0 g 0.0 b 98.5 a 

14 GLUFOSINATE 400 G A/HA 1-2 TR A 96.3 a 96.3 a 0.0 g 87.0 a 86.3 ab 

LSD (P=.05) 1.48 2.44 8.54 4.29 24.82 

Standard Deviation 1.03 1.70 5.98 3.00 17.37 

CV 10.79 16.23 60.85 48.28 43.83 


Column 1 Footnote: BURNING OF LEAF MARGINS. 

Column 2 Footnote: PATCHY CHLOROSIS, LEAVES CURLED UNDER. 

Column 3 Footnote: STUNTING. 

Column 4 Footnote: NECROSIS. 

171

SPREADING ATRIPLEX CONTROL IN SOYBEANS 

Christy Shropshire, Peter Sikkema 


Weed Code AMBEL ATXPA AMBEL 


CONTROL CONTROL CONTROL 


Rating Date Jul-27-00 Sep-7-00 Sep-7-00 

Weed Stage 5-20+ LF 20+ LF 20+ LF 

Weed Density, Unit 3 M2 4.5 M2 6 M2 


No. Name Rate Unit Stg Code 6 7 8 

1 CHECK (WEEDY) 0.0 f 0.0 e 0.0 f 

2 ACIFLUORFEN 600 G A/HA 1-2 TR A 86.3 ab 17.5 de 61.3 bcd 

3 FOMESAFEN 240 G A/HA 1-2 TR A 76.3 ab 0.0 e 78.8 ab 


4 BENTAZON (FORTE) 1080 G A/HA 1-2 TR A 17.5 def 75.0 ab 17.5 ef 

5 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 42.5 cd 91.3 a 38.8 cde 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 30.0 de 15.0 de 17.5 ef 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 90.5 ab 68.8 abc 86.3 ab 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 94.8 a 12.5 de 98.0 a 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 100 G A/HA 1-2 TR A 30.0 de 15.0 de 56.3 bcd 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 75 G A/HA 1-2 TR A 40.0 cde 57.5 abc 32.5 de 


UAN 28 % 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 25 G A/HA 1-2 TR A 65.0 bc 32.5 cde 56.3 bcd 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 25 G A/HA 1-2 TR A 15.0 ef 57.5 abc 31.3 de 


UAN 28% 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 900 G A/HA 1-2 TR A 97.5 a 94.8 a 97.5 a 

14 GLUFOSINATE 400 G A/HA 1-2 TR A 90.0 ab 47.5 bcd 66.3 bc 

LSD (P=.05) 24.11 34.99 27.91 


CV 30.47 58.62 37.05 



THE POSTEMERGENCE APPLICATION OF CHLORIMURON-ETHYL/THIFENSULFURON-METHYL IN ROUNDUP READY SOYBEANS RESULTED IN 

SIGNIFICANT CHLOROSIS AND LEAF DISTORTION. THE POSTEMERGENCE APPLICATION OF ACIFLUORFEN, FOMESAFEN, 

THIFENSULFURON-METHYL, CHLORIMURON-ETHYL, CHLORIMURON-ETHYL/THIFENSULFURON-METHYL, IMAZETHAPYR AND IMAZAMOX PLUS 

FOMESAFEN ALL REDUCED THE HEIGHT OF THE BEANS SHORTLY AFTER APPLICATION. THE CROP RECOVERED FROM THIS EARLY SEASON 

INJURY WITH THE EXCEPTION OF THE APPLICATION OF GLUFOSINATE, WHICH RESULTED IN SIGNIFICANT INJURY TO ROUNDUP READY 

SOYBEANS AS EXPECTED. GLYPHOSATE PROVIDED EXCELLENT CONTROL OF ATXPA. THIFENSULFURON-METHYL PROVIDED EXCELLENT 

CONTROL AND BENTAZON PROVIDED GOOD CONTROL OF ATXPA. GLYPHOSATE AND CLORANSULAM-METHYL PROVIDED EXCELLENT CONTROL 

OF AMBEL, WHILE CHLORIMURON-ETHYL/THIFENSULFURON-METHYL PROVIDED GOOD CONTROL OF AMBEL. 

172

CANADA FLEABANE CONTROL IN SOYBEANS I 




Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: WARWICK. 


APPLICATION DESCRIPTION 

STAGE AT APPLICATION 

Application: A B Application: A B 

Date : Jun-3-00 Jul-1-00 Crop 1 GLXMA COTY 3-4 TRI 

Time of Day: 15:00 10:15 Height : 3 CM 15 CM 

Method : 

Timing : POST POST B Weed 1 ERICA 2-20 LF 4-20+ LF 

Placement : Stg.Scale: 1-25 CM 5-100 CM 

Air Temp. : 18.7 C 24.8 C Density : 74 M2 34 M2 

% Humidity : 50 56 Weed 2 LACSE 6-20 LF 3-20+ LF 

Wind Speed : 5 KM/H 8 KM/H Stg.Scale: 18-45 CM 8-125 CM 

Dew Present: N N Density : 38 M2 44 M2 

Soil Moist.: 

Cloud Cover: 0% 0% 

Equipment : CO2 Backp CO2 Backp 

Pressure : 207 kPa 207 kPa 

Nozzle Type: FLAT FAN FLAT FAN 

Nozzle Size: XR8002 XR8002 

Noz.Spacing: 50 CM 50 CM 


2 M 

Boom Height: 48 CM 48 CM 

Carrier : WATER WATER 

Appl.Volume: 200 L/ha 200 L/ha 


CO2 

Weed Code ERICA LACSE ERICA LACSE 


Rating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL 

Rating Unit % % % % % % 

Rating Date Jun-15-00 Jul-7-00 Jul-7-00 Jul-7-00 Aug-8-00 Aug-8-00 

Crop Stage UNI-1TRI 3-4 TRI 

Weed Stage 4-20+ LF 3-20+ LF 20+ LF 13-20+ L 

Weed Density, Unit 34 /M2 44 /M2 39 /M2 16 /M2 


No. Name Rate Unit Stg Code 1 2 3 4 5 6 

1 CHECK (WEEDY) 0 e 0 c 0 e 0 e 0 c 0 d 

2 FOMESAFEN 240 G A/HA 1-2 TR A 9 a 0 c 25 d 50 b 14 c 46 c 


3 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 2 de 0 c 39 cd 19 cd 59 b 5 d 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

4 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 2 cde 0 c 83 ab 28 c 93 a 21 d 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

5 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 4 b-e 0 c 59 bc 49 b 69 ab 53 c 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 6 a-d 0 c 98 a 26 c 98 a 16 d 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 IMAZETHAPYR 75 G A/HA 1-2 TR A 1 de 0 c 45 cd 10 de 45 b 8 d 


UAN 28 % 2.000 L/HA 1-2 TR A 

8 IMAZAMOX 25 G A/HA 1-2 TR A 3 cde 0 c 36 cd 28 c 44 b 23 d 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

9 GLYPHOSATE 900 G A/HA 1-2 TR A 1 de 0 c 95 a 94 a 89 a 90 ab 

10 GLYPHOSATE 900 G A/HA 1-2 TR A 3 cde 0 c 99 a 97 a 100 a 100 a 

GLYPHOSATE 900 G A/HA 3-4 TR B 

11 GLUFOSINATE 400 G A/HA 1-2 TR A 7 abc 20 b 91 a 26 c 98 a 10 d 

12 GLUFOSINATE 400 G A/HA 1-2 TR A 8 ab 97 a 100 a 97 a 100 a 75 b 

GLUFOSINATE 400 G A/HA 3-4 TR B 

LSD (P=.05) 4.3 16.6 24.5 14.3 28.6 21.0 

Standard Deviation 3.0 11.5 17.0 9.9 19.8 14.6 

CV 80.5 118.52 26.49 22.64 29.43 39.17 


Column 1 Footnote: UNIFOLIATE LEAF TIP BURNED AND MIDRIB SHORTENED. 

Column 2 Footnote: PERCENTAGE OF BEANS DEAD. 


THERE WAS NO INJURY OF COMMERCIAL SIGNIFICANCE IN ROUNDUP READY SOYBEANS WITH THE CONVENTIONAL HERBICIDES EVALUATED. 

GLUFOSINATE CAUSED SIGNIFICANT INJURY IN ROUNDUP READY SOYBEANS AS EXPECTED. CLORANSULAM-METHYL, CHLORIMURON, GLYPHOSATE 

AND GLUFOSINATE PROVIDED EXCELLENT FULL SEASON CONTROL OF ERICA. GLYPHOSATE PROVIDED EXCELLENT CONTROL OF LACSE AND THE 

SEQUENTIAL APPLICATION OF GLUFOSINATE PROVIDED FAIR CONTROL. OF THE CONVENTIONAL HERBICIDES EVALUATED, FOMESAFEN AND 

CHLORIMURON-ETHYL/THIFENSULFURON-METHYL PROVIDED THE BEST CONTROL OF LASCE WHICH WAS STILL NOT COMMERCIALLY ACCEPTABLE. 

173

CANADA FLEABANE CONTROL IN SOYBEANS II 


Experiment ID: PWS00C6B 


Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: L6. 





Date : Jun-3-00 Jul-1-00 Crop 1 GLXMA C-UNIF 3-4 TRI 


Method : 

Timing : POST POST B Weed 1 ERICA 5-20+ LF 6-20+ LF 


Air Temp. : 19.7 C 24.0 C Density : 58 M2 77 M2 

% Humidity : 50 65 Weed 2 LACSE 3-16 LF 8-20+ LF 


Dew Present: N N Density : 3 M2 4 M2 

Soil Moist.: 

AT DEPTH 


Equipment : CO2 Backp CO2 Backp 



Nozzle Size: XR8002 XR8002 



2 M 





CO2 

Weed Code ERICA LACSE ERICA 


Rating Data Type INJURY INJURY CONTROL CONTROL CONTROL 


Rating Date Jun-15-00 Jul-7-00 Jul-7-00 Jul-7-00 Aug-8-00 

Crop Stage UNI-1TRI 2-5 TRI 

Weed Stage 6-20+ LF 8-20+ LF 6-20+ LF 

Weed Density, Unit 77 /M2 4 /M2 74 /M2 



1 CHECK (WEEDY) 0 e 0 b 0 e 0 f 0 f 

2 FOMESAFEN 240 G A/HA 1-2 TR A 13 c 0 b 25 d 69 abc 8 ef 


3 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 1 e 0 b 33 d 28 def 20 de 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

4 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 2 e 0 b 58 c 21 ef 30 d 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

5 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 2 e 0 b 77 b 55 bcd 48 c 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 6 d 0 b 98 a 60 bc 97 a 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 IMAZETHAPYR 75 G A/HA 1-2 TR A 1 e 0 b 20 d 8 f 35 cd 


UAN 28 % 2.000 L/HA 1-2 TR A 

8 IMAZAMOX 25 G A/HA 1-2 TR A 15 c 0 b 33 d 43 cde 18 def 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

9 GLYPHOSATE 900 G A/HA 1-2 TR A 1 e 0 b 100 a 97 a 99 a 

10 GLYPHOSATE 900 G A/HA 1-2 TR A 0 e 0 b 99 a 97 a 100 a 


11 GLUFOSINATE 400 G A/HA 1-2 TR A 50 b 0 b 91 a 80 ab 75 b 

12 GLUFOSINATE 400 G A/HA 1-2 TR A 55 a 99 a 99 a 97 a 96 a 


LSD (P=.05) 3.1 0.2 12.9 29.3 17.1 


CV 17.53 1.75 14.6 37.26 22.71 


Column 1 Footnote: UNIFOLIATE LEAF TIP BURNED AND MIDRIB SHORTENED. 

Column 2 Footnote: PERCENTAGE OF BEANS DEAD. 

174

CANADA FLEABANE CONTROL IN SOYBEANS II 



Weed Code 

LACSE 


CONTROL 

Rating Unit % 

Rating Date 

Aug-8-00 

Weed Stage 

20+ L 

Weed Density, Unit 4 /M2 


No. Name Rate Unit Stg Code 6 

1 CHECK (WEEDY) 0 f 

2 FOMESAFEN 240 G A/HA 1-2 TR A 81 abc 


3 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 20 ef 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

4 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 34 de 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

5 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 53 bcd 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 55 bcd 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 IMAZETHAPYR 75 G A/HA 1-2 TR A 0 f 


UAN 28 % 2.000 L/HA 1-2 TR A 

8 IMAZAMOX 25 G A/HA 1-2 TR A 49 cde 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

9 GLYPHOSATE 900 G A/HA 1-2 TR A 99 a 

10 GLYPHOSATE 900 G A/HA 1-2 TR A 100 a 


11 GLUFOSINATE 400 G A/HA 1-2 TR A 59 bcd 

12 GLUFOSINATE 400 G A/HA 1-2 TR A 83 ab 


LSD (P=.05) 30.2 

Standard Deviation 20.9 

CV 39.77 



THE APPLICATION OF FOMESAFEN, AND IMAZAMOX PLUS FOMESAFEN RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN ROUNDUP READY 

SOYBEANS SHORTLY AFTER APPLICATION BUT THE CROP RECOVERED QUICKLY AS INDICATED BY THE SECOND INJURY RATING COMPLETED 34 

DAYS AFTER APPLICATION. GLUFOSINATE CAUSED SIGNIFICANT INJURY IN ROUNDUP READY SOYBEANS AS EXPECTED. CLORANSULAM-METHYL, 

GLYPHOSATE AND A SEQUENTIAL APPLICATION OF GLUFOSINATE PROVIDED EXCELLENT FULL SEASON CONTROL OF ERICA. GLYPHOSATE 

PROVIDED EXCELLENT CONTROL OF LACSE, WHILE FOMESAFEN AND THE SEQUENTIAL APPLICATION OF GLUFOSINATE PROVIDED GOOD 

CONTROL OF LACSE. 

175

ANNUAL SOWTHISTLE CONTROL IN SOYBEANS I 




Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: J3. 





Date : Jun-23-00 Jul-12-00 Crop 1 GLXMA 2 TRI 4-5 TRI 


Method : 

Timing : 1-2 TRI 3-4 TRI Weed 1 SONOL 7 LF 9-17 LF 

Placement : Stg.Scale: 10 CM 25-70 CM 

Air Temp. : 21.3 C 23.5 C Density : 1.5 M2 2.5 M2 

% Humidity : 67 64 Weed 2 CHEAL 4-20+ LF 6-20+ LF 


Dew Present: Y Y Density : 11 M2 13 M2 

Soil Moist.: AT DEPTH MOIST Weed 3 AMBEL 3-20+ LF 7-20+ LF 

Cloud Cover: 0% 20% Stg.Scale: 2-15 CM 15-70 CM 

Equipment : CO2 Backp CO2 Backp Density : 5.5 M2 24 M2 

Pressure : 207 kPa 207 kPa Weed 4 SONAR 4-14 LF 

Nozzle Type: FLAT FAN FLAT FAN Stg.Scale: 2-8 CM 

Nozzle Size: XR8002 XR8002 Density : 7.5 M2 

Noz.Spacing: 50 CM 50 CM Weed 5 AMARE ---- 5-28 LF 

Boom Length: 2 M 2 M Stg.Scale: 5-50 CM 

Boom Height: 48 CM 48 CM Density : 3 M2 




CO2 

Crop Code GLXMA GLXMA GLXMA GLXMA GLXMA 

Rating Data Type INJURY INJURY INJURY INJURY INJURY 



Jun-29-00 Jun-29-00 Jun-29-00 Jun-29-00 Jul-17-00 

Crop Stage 3-4 TRI 3-4 TRI 3-4 TRI 3-4 TRI FLOWERS 



1 CHECK (WEEDY) 0.0 e 0.0 f 0.0 f 0.0 e 0.0 d 

2 ACIFLUORFEN 600 G A/HA 1-2 TR A 7.5 d 0.0 f 6.5 c 13.8 c 0.0 d 

3 FOMESAFEN 240 G A/HA 1-2 TR A 18.8 b 1.8 def 6.3 c 12.5 cd 0.0 d 


4 BENTAZON (FORTE) 1080 G A/HA 1-2 TR A 6.0 d 0.0 f 1.3 ef 5.0 de 0.0 d 

5 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 1.3 e 1.3 ef 3.0 de 12.5 cd 0.0 d 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 0.8 e 7.3 c 6.5 c 11.3 cd 0.0 d 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 1.5 e 5.3 cd 6.0 c 27.5 b 11.3 c 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 0.0 e 4.8 cde 10.5 b 15.0 c 0.0 d 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 100 G A/HA 1-2 TR A 1.3 e 11.0 b 3.3 de 18.8 c 7.5 cd 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 75 G A/HA 1-2 TR A 10.5 c 1.8 def 1.8 ef 13.8 c 0.0 d 


UAN 28 % 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 25 G A/HA 1-2 TR A 5.0 d 6.8 c 5.0 cd 12.5 cd 0.0 d 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 25 G A/HA 1-2 TR A 7.8 cd 0.0 f 0.5 f 2.5 e 0.0 d 


UAN 28% 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 900 G A/HA 1-2 TR A 0.0 e 0.0 f 0.0 f 0.0 e 0.0 d 

14 GLYPHOSATE 900 G A/HA 1-2 TR A 0.0 e 0.0 f 0.0 f 0.0 e 0.0 d 


15 GLUFOSINATE 400 G A/HA 1-2 TR A 97.5 a 97.5 a 97.5 a 97.5 a 90.0 b 

16 GLUFOSINATE 400 G A/HA 1-2 TR A 96.5 a 96.5 a 96.5 a 96.5 a 98.0 a 


LSD (P=.05) 2.84 3.48 2.17 6.90 7.23 


CV 12.5 16.66 9.93 22.79 39.15 

Column 1 Footnote: 2ND AND 3RD TRIFOLIATE WRINKLED AND SPECKLED (BURNED). 

Column 2 Footnote: CHLOROSIS OF LEAF MARGINS. 

Column 3 Footnote: LEAF MIDRIB CURLED UNDER OR TO THE SIDE. 

Column 4 & 5 Footnote: GROWTH REDUCTION (SMALLER LEAVES AND SHORTER PLANTS). 

176




Weed Code SONOL CHEAL AMARE AMBEL SONAR 


CONTROL CONTROL CONTROL CONTROL CONTROL 



Weed Stage 9-17 LF 6-20+ LF 7-20+ LF 

Weed Density, Unit 2.5 M2 13 M2 24 M2 



1 CHECK (WEEDY) 0.0 d 0.0 e 0.0 c 0.0 d 0.0 c 

2 ACIFLUORFEN 600 G A/HA 1-2 TR A 95.0 a 15.0 de 74.3 a 90.0 ab 96.3 a 

3 FOMESAFEN 240 G A/HA 1-2 TR A 100.0 a 57.5 c 78.3 a 68.3 bc 73.8 a 


4 BENTAZON (FORTE) 1080 G A/HA 1-2 TR A 98.8 a 88.3 a 43.8 b 66.3 bc 67.5 ab 

5 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 45.0 c 96.8 a 97.5 a 65.0 c 42.5 b 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 100.0 a 60.0 bc 94.3 a 90.5 ab 97.5 a 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 100.0 a 98.0 a 99.0 a 97.3 a 98.8 a 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 98.8 a 28.8 d 44.5 b 100.0 a 85.0 a 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 100 G A/HA 1-2 TR A 41.3 c 82.5 abc 99.0 a 89.8 ab 40.0 b 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 75 G A/HA 1-2 TR A 75.0 b 87.0 ab 86.0 a 83.0 abc 66.7 ab 


UAN 28 % 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 25 G A/HA 1-2 TR A 100.0 a 78.8 abc 88.5 a 82.5 abc 91.7 a 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 25 G A/HA 1-2 TR A 73.8 b 95.0 a 97.3 a 70.0 bc 80.0 a 


UAN 28% 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 900 G A/HA 1-2 TR A 98.0 a 98.8 a 97.8 a 98.5 a 98.3 a 






LSD (P=.05) 16.04 25.11 27.00 21.34 27.98 


CV 13.56 23.88 23.52 18.46 25.68 


177




Weed Code SONOL CHEAL AMARE AMBEL SONAR 


CONTROL CONTROL CONTROL CONTROL CONTROL 


Rating Date Sep-7-00 Sep-7-00 Sep-7-00 Sep-7-00 Sep-7-00 

Weed Stage 5-12 LF 10-20+ L 20+ LF 20+ LF 20+ LF 

Weed Density, Unit 5 M2 12 M2 9 M2 6 M2 2 M2 



1 CHECK (WEEDY) 0.0 d 0.0 e 0.0 d 0.0 e 0.0 c 

2 ACIFLUORFEN 600 G A/HA 1-2 TR A 96.8 a 17.5 de 91.0 a 88.8 abc 95.5 a 

3 FOMESAFEN 240 G A/HA 1-2 TR A 92.8 a 57.5 c 95.5 a 86.3 abc 94.0 a 


4 BENTAZON (FORTE) 1080 G A/HA 1-2 TR A 97.0 a 88.8 a 56.3 bc 63.8 cd 71.5 a 

5 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 40.0 c 96.5 a 98.5 a 61.3 cd 77.0 a 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 97.5 a 78.8 abc 97.0 a 79.3 abc 97.5 a 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 99.0 a 98.0 a 99.0 a 95.0 ab 99.0 a 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 92.5 a 30.0 d 35.0 c 95.5 ab 97.5 a 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 100 G A/HA 1-2 TR A 74.8 b 94.0 a 98.0 a 90.5 abc 38.3 b 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 75 G A/HA 1-2 TR A 87.0 a 90.6 a 96.5 a 80.0 abc 83.3 a 


UAN 28 % 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 25 G A/HA 1-2 TR A 90.8 a 83.5 ab 97.0 a 78.8 abc 92.0 a 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 25 G A/HA 1-2 TR A 97.0 a 95.0 a 99.0 a 41.3 d 93.5 a 


UAN 28% 2.000 L/HA 1-2 TR A 




15 GLUFOSINATE 400 G A/HA 1-2 TR A 88.3 a 62.5 bc 57.5 bc 66.3 bcd 81.0 a 

16 GLUFOSINATE 400 G A/HA 1-2 TR A 96.3 a 91.0 a 77.3 ab 84.0 abc 94.0 a 


LSD (P=.05) 11.37 23.42 22.12 26.64 24.67 


CV 9.44 22.16 19.09 24.65 21.05 



THE POSTEMERGENCE APPLICATION OF FOMESAFEN AND IMAZETHAPYR PLUS BENTAZON RESULTED IN LEAF DISTORTION OF THE SECOND AND 

THIRD TRIFOLIATE. THE APPLICATION OF IMAZETHAPYR RESULTED IN CHLOROSIS OF THE LEAF MARGINS. THE APPLICATION OF 

CLORANSULAM-METHYL RESULTED IN CURVATURE OF THE LEAF MIDRIB. THE APPLICATION OF ACIFLUORFEN, FOMESAFEN, 

THIFENSULFURON-METHYL, CHLORIMURON-ETHYL, CHLORIMURON-ETHYL/THIFENSULFURON-METHYL, CLORANSULAM-METHYL, IMAZETHAPYR, 

IMAZETHAPYR PLUS BENTAZON, AND IMAZAMOX PLUS FOMESAFEN ALL REDUCED THE HEIGHT OF THE BEANS SHORTLY AFTER APPLICATION. 

THE CROP RECOVERED FROM THIS EARLY SEASON INJURY WITH THE EXCEPTION OF CHLORIMURON-ETHYL AND 

CHLORIMURON-ETHYL/THIFENSULFURON-METHYL AND THE APPLICATION OF GLUFOSINATE. THE HIGH LEVEL OF INJURY WITH GLUFOSINATE IS 

EXPECTED SINCE THIS TRIAL WAS CONDUCTED IN ROUNDUP READY SOYBEANS. ACIFLUORFEN, FOMESAFEN, BENTAZON, CHLORIMURON-ETHYL, 

CHLORIMURON-ETHYL/THIFENSULFURON-METHYL, CLORANSULAM-METHYL, IMAZETHAPYR PLUS BENTAZON, IMAZAMOX PLUS FOMESAFEN, 

IMAZAMOX PLUS BENTAZON, GLYPHOSATE AND GLUFOSINATE ALL PROVIDED GOOD TO EXCELLENT CONTROL OF SONOL. BENTAZON, 

THIFENSULFURON-METHYL, CHLORIMURON-ETHYL/THIFENSULFURON-METHYL, IMAZETHAPYR, IMAZETHAPYR PLUS BENTAZON, IMAZAMOX PLUS 

FOMESAFEN, IMAZAMOX PLUS BENTAZON, GLYPHOSATE AND THE SEQUENTIAL APPLICATION OF GLUFOSINATE ALL PROVIDED GOOD TO 

EXCELLENT CONTROL OF CHEAL. BENTAZON, CLORANSULAM-METHYL AND GLUFOSINATE WERE WEAK ON AMARE. BENTAZON, 

THIFENSULFURON-METHYL AND IMAZAMOX PLUS BENTAZON WERE WEAK ON AMBEL. ACIFLUORFEN, FOMESAFEN, CHLORIMURON-ETHYL, 

CHLORIMURON-ETHYL/THIFENSULFURON-METHYL, CLORANSULAM-METHYL, IMAZAMOX PLUS FOMESAFEN, IMAZAMOX PLUS BENTAZON 

GLYPHOSATE AND GLUFOSINATE ALL PROVIDED GOOD TO EXCELLENT CONTROL OF SONAR. 

178

ANNUAL SOWTHISTLE CONTROL IN SOYBEANS II 

PETER SIKKEMA, KATHARINE SAUNDERS 


CROP: GLXMA, SOYBEAN (PIONEER 91B64). Planted: May-15-00, 49000 SEEDS/HA, 4 CM Deep, 75 CM Row Width. 

Planting Method: PRECISION PLANTER. Emerged On: May-29-00. 

FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 8 M. Expt. Location: HORN. 

Site Description: 



Application: A B C Application: A B C 

Date : May-22-00 Jun-23-00 Jul-07-00 Crop 1 GLXMA 2 TRI 4 TRI 

Time of Day: 3:00 P.M. 12:00 P.M 9:00 P.M. Height : 17 CM 26 CM 

Method : F. SPRAY CO2 SPRAY C02 SPRAY 

Timing : COVER PRE 1-2 TRI 3-4 TRI Weed 1 CHEAL 14 LEAF 

Placement : SOIL FOLIAR FOLIAR Stg.Scale: 37.7 CM 

Air Temp. : 10 C 25.3 C 16.8 C Density : 6 SQ/M 

% Humidity : 40 54 56 Weed 2 AMBEL 12 LEAF 

Wind Speed : 3 KM/H 7 KM/H 4 KM/H Stg.Scale: 33 CM 

Dew Present: N N N Density : 1 SQ.M 

Soil Moist.: MOIST MOIST DRY Weed 3 SETVI 

Cloud Cover: 5% 5% 60% Stg.Scale: 

Equipment : F. SPRAY C02 SPRAY C02 SPRAY Density : 

Pressure : 205 kPa 241 kPa 241 kPa Weed 4 SONOL 10 LEAF 12 LEAF 

Nozzle Type: FLAT FAN FLAT FAN FLAT FAN Stg.Scale: 23.75 CM 68.5 CM 

Nozzle Size: 8002 VS 8002 VS 8002 VS Density : 15.2 SQ.M 9.5 SQ.M 

Noz.Spacing: 50 CM 50 CM 50 CM Weed 5 DAUCA 

Boom Length: 6 M 2 M 2 M Stg.Scale: 

Boom Height: 50 CM 50 CM 50 CM Density : 

Carrier : WATER WATER WATER Weed 6 ASCSY 17 LEAF 

Appl.Volume: 200 L/HA 200 L/HA 200 L/HA Stg.Scale: 59.3 CM 

Propellant : PUMP C02 C02 Density : 3 SQ.M 

Weed 7 AGRRE 

21 LEAF 

Stg.Scale: 

76.8 CM 

Density : 

4 SQ.M 

Weed Code SONOL ASCSY SONOL ASCSY 

Crop Code GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA 




Crop Stage 2 TR 3 TR 3 TR 3 TR 10 TR 10 TR 

Crop Stage Scale 19.25 CM 40.5 CM 40.5 CM 40.5 CM 79.5 CM 79.5 CM 

Weed Stage 10 LEAF 11 LEAF 12 LEAF 16 LEAF 

Weed Density, Unit 12 SQ.M 2 SQ.M 11.7SQ.M 2.6 SQ.M 

Trt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 56 DAT 56 DAT 

Trt Treatment Rate Grow 

No. Name Rate Unit Stg 

1 CHECK (WEEDY) 0 b 0 a 0 b 0 c 0 f 0 c 

2 ACIFLUORFEN 600 G A/HA 1-2 TR 11 ab 0 a 47 a 68 ab 65 bcd 69 b 

3 FOMESAFEN 240 G A/HA 1-2 TR 18 a 3 a 50 a 95 a 46 cde 85 ab 

TURBOCHARGE 0.500 % V/V 1-2 TR 

4 BENTAZON 1080 G A/HA 1-2 TR 11 ab 3 a 38 ab 73 ab 33 e 93 a 

5 THIFENSULFURON-METHY 6 G A/HA 1-2 TR 8 ab 2 a 40 ab 73 ab 41 de 99 a 

AGRAL 90 0.100 % V/V 1-2 TR 

UAN 28 % 2.000 L/HA 1-2 TR 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR 5 ab 2 a 53 a 49 b 96 a 99 a 

AGRAL 90 0.200 % V/V 1-2 TR 

UAN 28 % 2.000 L/HA 1-2 TR 

7 THIFEN/CHLORIMURON-E 14.1 G A/HA 1-2 TR 6 ab 1 a 79 a 74 ab 91 ab 96 a 

AGRAL 90 0.200 % V/V 1-2 TR 

UAN 28 % 2.000 L/HA 1-2 TR 

8 DE 565 17.5 G A/HA 1-2 TR 4 b 0 a 60 a 65 ab 69 a-d 80 ab 

AGRAL 90 0.250 % V/V 1-2 TR 

UAN 28 % 2.000 L/HA 1-2 TR 

9 IMAZETHAPYR 100 G A/HA 1-2 TR 9 ab 2 a 72 a 64 ab 74 abc 91 a 

AGRAL 90 0.250 % V/V 1-2 TR 

UAN 28% 2.000 L/HA 1-2 TR 

10 IMAZETHAPYR 75 G A/HA 1-2 TR 4 b 1 a 40 ab 76 ab 53 cde 91 a 

BENTAZON 840 G A/HA 1-2 TR 

UAN 28 % 2.000 L/HA 1-2 TR 

LSD (P=.05) 13.0 3.3 43.9 35.8 28.6 20.0 


CV 119.19 183.98 63.48 38.85 34.78 17.17 


The postemergence application of acifluorfen, fomesafen and bentazon resulted in significant injury in Roundup Ready soybeans shortly after application but the crop recovered 

quickly. The application of glufosinate in Roundup Ready soybeans resulted in significant crop injury as would be expected. Chlorimuron-ethyl, chlorimuron-ethyl/thifensulfuronmethyl 

and glyphosate provided excellent full season control of SONOL. Imazamox plus fomesafen, imazamox plus bentazon and glufosinate provided good control of SONOL. 

The remaining herbicide treatments evaluated provided poor to fair control of SONOL. 

179

HEMP CONTROL IN SOYBEANS 




Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 24 M. Expt. Location: H11. 




Date : Jul-5-00 Crop 1 GLXMA 2-3 TRI 


Method : 

Timing : POST Weed 1 CNISA 10-20 LF 

Placement : 




% Humidity : 50 


Dew Present: N 

Soil Moist.: MOIST 


Equipment : CO2 Backp 



Nozzle Size: XR8002 







Weed Code 

CNISA 


Rating Data Type INJURY INJURY INJURY INJURY CONTROL 



Crop Stage 5 TRI 5 TRI 5 TRI FLWR/POD 

Weed Stage 

20+ LF 


5 M2 



1 CHECK (WEEDY) 0.0 g 0.0 f 0.0 d 0.0 b 0.0 e 

2 ACIFLUORFEN 600 G A/HA 1-2 TR A 6.7 b 3.3 e 15.0 bc 3.3 b 66.7 abc 

3 FOMESAFEN 240 G A/HA 1-2 TR A 7.0 b 3.7 de 13.3 bc 3.3 b 65.0 abc 


4 BENTAZON (FORTE) 1080 G A/HA 1-2 TR A 2.7 ef 4.3 de 6.7 cd 0.0 b 76.7 abc 

5 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 1.7 fg 6.3 d 23.3 ab 0.0 b 70.0 abc 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 3.0 def 12.5 b 20.0 b 0.0 b 73.3 abc 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 6.0 bc 12.5 b 30.0 a 0.0 b 46.7 cd 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 1.0 fg 5.0 de 17.5 b 0.0 b 51.7 bcd 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 100 G A/HA 1-2 TR A 4.3 cde 9.0 c 23.3 ab 0.0 b 35.0 cde 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 75 G A/HA 1-2 TR A 5.7 bc 4.3 de 0.0 d 0.0 b 56.7 bcd 


UAN 28 % 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 25 G A/HA 1-2 TR A 5.0 bcd 5.0 de 0.0 d 0.0 b 23.3 de 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 25 G A/HA 1-2 TR A 3.0 def 2.3 ef 0.0 d 0.0 b 60.0 a-d 


UAN 28% 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 900 G A/HA 1-2 TR A 0.0 g 0.0 f 0.0 d 0.0 b 99.3 a 

14 GLUFOSINATE 400 G A/HA 1-2 TR A 95.0 a 95.0 a 65.0 a 91.7 ab 

LSD (P=.05) 1.95 2.59 9.08 4.17 35.99 


CV 11.48 13.12 46.58 48.22 36.78 


Column 1 Footnote: BURNING OF LEAF MARGINS. 

Column 2 Footnote: PATCHY CHLOROSIS, LEAVES CURLED UNDER. 

Column 3 Footnote: STUNTING. 

Column 4 Footnote: LEAF CRINKLE 

180

HEMP CONTROL IN SOYBEANS 



Weed Code 

CNISA 


CONTROL 



Sep-7-00 

Weed Stage 

20+ LF 


2 M2 


No. Name Rate Unit Stg Code 6 

1 CHECK (WEEDY) 0.0 d 

2 ACIFLUORFEN 600 G A/HA 1-2 TR A 80.0 abc 

3 FOMESAFEN 240 G A/HA 1-2 TR A 73.3 abc 


4 BENTAZON (FORTE) 1080 G A/HA 1-2 TR A 91.7 ab 

5 THIFENSULFURON-METHYL 6 G A/HA 1-2 TR A 83.3 abc 

AGRAL 90 0.100 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 9 G A/HA 1-2 TR A 78.3 abc 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

7 CHLORIMURON-ETHYL/THIFENSULFURON-METHYL 14.1 G A/HA 1-2 TR A 51.7 abc 

AGRAL 90 0.200 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 17.5 G A/HA 1-2 TR A 43.3 bcd 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28 % 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 100 G A/HA 1-2 TR A 38.3 cd 

AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 75 G A/HA 1-2 TR A 33.3 cd 


UAN 28 % 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 25 G A/HA 1-2 TR A 0.0 d 


AGRAL 90 0.250 % V/V 1-2 TR A 

UAN 28% 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 25 G A/HA 1-2 TR A 60.0 abc 


UAN 28% 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 900 G A/HA 1-2 TR A 100.0 a 

14 GLUFOSINATE 400 G A/HA 1-2 TR A 91.7 ab 

LSD (P=.05) 43.90 


CV 44.38 



THE POSTEMERGENCE APPLICATION OF CHLORIMURON-ETHYL AND CHLORIMURON-ETHYL/THIFENSULFURON-METHYL IN ROUNDUP READY 

SOYBEANS RESULTED IN SIGNIFICANT CHLOROSIS AND LEAF DISTORTION. THE POSTEMERGENCE APPLICATION OF ACIFLUORFEN, FOMESAFEN, 

THIFENSULFURON-METHYL, CHLORIMURON-ETHYL, CHLORIMURON-ETHYL/THIFENSULFURON-METHYL, CLORANSULAM-METHYL AND 

IMAZETHAPYR ALL REDUCED THE HEIGHT OF THE BEANS SHORTLY AFTER APPLICATION. THE CROP RECOVERED FROM THIS EARLY SEASON 

INJURY WITH THE EXCEPTION OF THE APPLICATION OF GLUFOSINATE, WHICH RESULTED IN SIGNIFICANT INJURY IN ROUNDUP READY SOYBEANS 

AS EXPECTED. GLYPHOSATE AND GLUFOSINATE BOTH PROVIDED EXCELLENT CONTROL ON CNISA. IN CONVENTIONAL SOYBEANS, BENTAZON 

PROVIDED EXCELLENT CONTROL WHILE GOOD CONTROL WAS OBTAINED WITH ACIFLUORFEN AND THIFENSULFURON-METHYL. 

181

FIELD HORSETAIL CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES 

PETER SIKKEMA, Dave Bilyea 


CROP: GLXMA, SOYBEAN (2601R). Planted: May-31-00, 90 KG/HA, 5 CM Deep, 37.5 CM Row Width. Planting Method: NO TILL DRILL. 

Emerged On: Jun-08-00. 

FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 10 M. Expt. Location: BROWN. 




Date : May-20-00 Crop 1 GLXMA 

Time of Day: 9:44 PM Height : 

Method : CO2 SPRAY 

Timing : PREPLANT Weed 1 EQUAR 

Placement : SOIL 

Stg.Scale: 

Air Temp. : 10.5 C Density : 

% Humidity : 94 Weed 2 POLPE 

Wind Speed : 5.5 KM/H Stg.Scale: 


Soil Moist.: MOIST Weed 3 AMBEL 


Stg.Scale: 

Equipment : CO2 SPRAY Density : 

Pressure : 241 kPa Weed 4 SONOL 


Nozzle Size: 8002 VS Density : 

Noz.Spacing: 50 CM Weed 5 SETVI 


Stg.Scale: 

Boom Height: 50 CM Density : 


Appl.Volume: 200 L/HA 


Weed Code EQUAR EQUAR EQUAR POLPE AMBEL SONOL SETVI 

Crop Code GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA 

Part Rated 

Rating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL 

Rating Unit % % % % % % % % % 

Rating Date Jun-18-00 Jul-12-00 Jul-14-00 Aug-11-00 Oct-02-00 Jul-14-00 Jul-14-00 Jul-14-00 Jul-14-00 

Crop Stage 4 TRI 4 TRI 12 TRI LF. DROP 4 TRI 4 TRI 4 TRI 4 TRI 

Crop Stage Scale 33.3 CM 33.3 CM 77.5 CM 33.3 CM 33.3 CM 33.3 CM 33.3 CM 

Weed Stage 7 CM 35 CM 35 CM 12 LEAF 17 LEAF 9 LEAF 6 LEAF 

Weed Density, Unit 312 SQ.M 164 SQ.M 164 SQ.M 4 SQ.M 2 SQ.M 5 SQ.M 24 SQ.M 

Trt-Eval Interval 7 DAE 28 DAE 28 DAE 56 DAT 116 DAT 28 DAE 28 DAE 28 DAE 28 DAE 

Trt Treatment Form Form Rate Grow 

No. Name Conc Type Rate Unit Stg 

1 CHECK (WEEDY) 0 a 0 a 0 b 0 b 0 c 0 b 0 b 0 b 0 b 

2 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP 0 a 0 a 81 a 88 a 84 ab 100 a 100 a 96 a 98 a 

FLUMETSULAM/METOLACH 923 F 2220 G A/HA PP 

3 GLYPHOSATE-TRANSORB 360 SL 1800 G A/HA PP 0 a 0 a 80 a 89 a 90 a 100 a 100 a 94 a 99 a 


4 AMITROLE 200 SL 1000 G A/HA PP 0 a 0 a 76 a 84 a 81 b 90 a 100 a 93 a 99 a 


5 AMITROLE 200 SL 2000 G A/HA PP 0 a 0 a 74 a 85 a 89 a 100 a 100 a 93 a 99 a 


LSD (P=.05) 0.0 0.0 11.6 6.5 6.6 13.8 0.0 9.5 3.9 

Standard Deviation 0.0 0.0 7.5 4.2 4.3 8.9 0.0 6.2 2.5 

CV 0.0 0.0 12.13 6.16 6.28 11.47 0.0 8.23 3.23 

Weed Code SONOL POLPE AMBEL SETVI 


Part Rated 

Rating Data Type CONTROL CONTROL CONTROL CONTROL 

Rating Unit % % % % 

Rating Date Aug-11-00 Aug-11-00 Aug-11-00 Aug-11-00 

Crop Stage 12 TRI 12 TRI 12 TRI 12 TRI 

Crop Stage Scale 77.5 CM 77.5 CM 77.5 CM 77.5 CM 

Weed Stage 8 LEAF 13 LEAF 18 LEAF 9 LEAF 

Weed Density, Unit 4 SQ.M 5 SQ.M 2 SQ.M 23 SQ.M 

Trt-Eval Interval 56 DAT 56 DAT 56 DAT 56 DAT 



1 CHECK (WEEDY) 0 b 0 b 0 b 0 b 

2 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP 88 a 78 a 100 a 100 a 


3 GLYPHOSATE-TRANSORB 360 SL 1800 G A/HA PP 86 a 100 a 100 a 100 a 


4 AMITROLE 200 SL 1000 G A/HA PP 86 a 100 a 100 a 100 a 


5 AMITROLE 200 SL 2000 G A/HA PP 80 a 100 a 100 a 100 a 


LSD (P=.05) 14.5 31.0 0.0 0.0 

Standard Deviation 9.4 20.1 0.0 0.0 

CV 13.79 26.66 0.0 0.0 


There was no injury in soybeans with the preplant herbicide treatments evaluated. The preplant application of glyphosate plus flumetsulam/metolachlor or amitrole plus 

flumetsulam/metolachlor both provided good full season control of EQUAR. In addition, all of the herbicide treatments evaluated provided good to excellent full season control of 

SONOL, POLPE, AMBEL and SETVI. 

182

FIELD HORSETAIL CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES II 

DAVE BILYEA, Peter Sikkema Experiment ID: PWS00A1B 

CROP: GLXMA, SOYBEAN Planted: Jun-02-00 Planting Method: PRECISION PLANTING. Emerged On: Jun-15-00. 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 48 M. Expt. Location: BEENACKERS. 

Site Description: Soil Texture: Fine sand. %OM: 1.6 %Sand: 92.1 %Silt: 6.2 %Clay: 1.7 pH: 6.8 



Date : May-11-00 Crop 1 GLXMA PRE-PLANT 


Method : CO2 

Timing : PP Weed 1 EQUAR 21-24 LF 



Air Temp. : 17 C Density : 32 /M2 

% Humidity : 45 Weed 2 LACSE 

Wind Speed : 6 KPH 

Stg.Scale: 

Dew Present: Density : 

Soil Moist.: 

Weed 3 ERICA 


Stg.Scale: 

Equipment : CO2 BACKP Density : 



Nozzle Size: 8002 XR 


Boom Length: 2.0 M 


Carrier : H2O 



Weed Code EQUAR ERICA LACSE EQUAR ERICA 


Part Rated 



Rating Date Jun-19-00 Jul-11-00 Jul-11-00 Jul-11-00 Jul-11-00 Aug-07-00 Aug-07-00 

Crop Stage 2 LF 3 TRI 3 TRI 3 TRI 3 TRI 5-6 TRI 5-6 TRI 

Crop Stage Scale 3-4 CM 18-20 CM 18-20 CM 18-20 CM 18-20 CM 40-45 CM 40-45 CM 

Weed Stage 20+ LF 20+ LF 20+ LF 20+ LF 6-20+ LF 

Weed Density, Unit 85 /M2 16 /M2 24 /M2 74 /M2 13 /M2 

Footnote Number 

Trt-Eval Interval 7 DAE 28 DAE 28 DAE 28 DAE 28 DAE 56 DAE 56 DAE 

Trt Treatment Form Form Rate Grow Appl 

No. Name Conc Type Rate Unit Stg Code 

1 CHECK (WEEDY) 0 a 0 a 0 c 0 b 0 b 0 c 0 b 

2 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 0 a 0 a 81 b 99 a 99 a 97 ab 99 a 

FLUMETSULAM/METOLACH 923 F 2220 G A/HA PP A 

3 GLYPHOSATE-TRANSORB 360 SL 1800 G A/HA PP A 0 a 0 a 90 a 99 a 99 a 96 b 99 a 


4 AMITROLE 200 SL 1000 G A/HA PP A 0 a 0 a 91 a 99 a 99 a 99 a 99 a 


5 AMITROLE 200 SL 2000 G A/HA PP A 0 a 0 a 84 ab 99 a 99 a 98 ab 99 a 


LSD (P=.05) 0.0 0.0 8.6 0.0 0.0 2.7 0.0 


CV 0.0 0.0 8.05 0.0 0.0 2.25 0.0 

Means followed by same letter do not significantly differ (P=.05, LSD) 

Mean comparisons performed only when AOV Treatment P(F) is significant at mean comparison OSL. 

183

FIELD HORSETAIL CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES II 

DAVE BILYEA, Peter Sikkema Experiment ID: PWS00A1B 

Weed Code 

LACSE 

Crop Code 

Part Rated 


CONTROL 



Aug-07-00 

Crop Stage 

5-6 TRI 

Crop Stage Scale 

40-45 CM 

Weed Stage 

20+ LF 


Trt-Eval Interval 

56 DAE 



1 CHECK (WEEDY) 0 b 

2 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 99 a 




4 AMITROLE 200 SL 1000 G A/HA PP A 99 a 


5 AMITROLE 200 SL 2000 G A/HA PP A 99 a 


LSD (P=.05) 0.0 


CV 0.0 




THERE WAS NO VISUAL INJURY IN SOYBEANS WITH THE PREPLANT HERBICIDE TREATMENTS EVALUATED. ALL OF THE HERBICIDE 

TREATMENTS EVALUATED PROVIDED GOOD TO EXCELLENT EARLY AND FULL SEASON CONTROL OF EQUAR, ERICA AND LACSE.. 

184

DANDELION CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES 

DAVE BILYEA, Peter Sikkema 


CROP: GLXMA, SOYBEAN (PIONEER 92B61). Planted: Jun-01-00 Planting Method: PRECISION PLANTING. Emerged On: Jun-15-00. 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: GILLARD. 

Site Description: Soil Texture: Loam. %OM: 2.8 %Sand: 33.7 %Silt: 46.3 %Clay: 20.0 pH: 5.8 



Date : May-11-00 Crop 1 GLXMA PRE-PLANT 


Method : 

Timing : PP Weed 1 TAROF 




% Humidity : 47 Weed 2 SOOVI 


Stg.Scale: 


Soil Moist.: ADEQUATE 


Equipment : CO2 BACKP 







Carrier : H2O 



Weed Code TAROF TAROF TAROF TAROF TAROF 

Crop Code 

GLXMA 

Part Rated 

Rating Data Type CONTROL INJURY CONTROL REGROWTH CONTROL REGROWTH 



Crop Stage 2 Lf 2-3 TRI 2-3 TRI 2-3 TRI 5-6 TRI 5-6 TRI 

Crop Stage Scale 2 cm 14-16 CM 14-16 CM 14-16 CM 40-42 CM 40-42 CM 

Weed Stage 20+ LF 8-20+ LF 8-20+ LF 



Trt-Eval Interval 7 DAE 28 DAE 28 DAE 28 DAE 56 DAE 56 DAE 



1 CHECK (WEEDY) 0 e 0 a 0 e 100 a 0 f 100 a 

2 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 93 cd 0 a 80 c 84 ab 58 de 98 a 

3 GLYPHOSATE-TRANSORB 360 SL 1350 G A/HA PP A 97 ab 0 a 84 bc 93 ab 66 cde 100 a 

4 GLYPHOSATE-TRANSORB 360 SL 1800 G A/HA PP A 97 ab 0 a 79 cd 96 a 63 cde 98 a 

5 AMITROLE 200 SL 1000 G A/HA PP A 95 abc 0 a 95 a 88 ab 55 de 95 a 

6 AMITROLE 200 SL 2000 G A/HA PP A 98 a 0 a 93 ab 71 bc 74 bc 94 a 

7 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 95 abc 0 a 88 abc 90 ab 73 bc 98 a 

AMITROLE 200 SL 1000 G A/HA PP A 

8 GLYPHOSATE-TRANSORB 360 SL 1350 G A/HA PP A 98 a 0 a 88 abc 93 ab 68 cd 86 ab 


9 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 94 bcd 0 a 69 d 89 ab 55 de 98 a 


10 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 93 cd 0 a 83 bc 89 ab 58 de 93 a 

FOE5043/METRIBUZIN 68 DF 840 G A/HA PP A 

11 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 90 d 0 a 87 abc 93 ab 53 e 91 a 

METRIBUZIN 75 DF 560 G A/HA PP A 

12 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 96 abc 0 a 86 abc 49 c 91 a 53 c 


13 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 96 abc 0 a 91 ab 81 ab 81 ab 68 bc 

IMAZETHAPYR 240 SL 100 G A/HA PP A 

LSD (P=.05) 3.6 0.0 10.8 24.4 13.6 19.9 


CV 2.8 0.0 9.48 19.68 15.39 15.29 



185

DANDELION CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES 



Weed Code 

SOOVI 

Crop Code 

Part Rated 


CONTROL 



Aug-07-00 

Crop Stage 

5-6 TRI 


40-42 CM 

Weed Stage 

20+ LF 




56 DAE 



1 CHECK (WEEDY) 0 c 

2 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 90 ab 



5 AMITROLE 200 SL 1000 G A/HA PP A 91 ab 

6 AMITROLE 200 SL 2000 G A/HA PP A 88 b 





9 GLYPHOSATE-TRANSORB 360 SL 900 G A/HA PP A 84 b 



FOE5043/METRIBUZIN 68 DF 840 G A/HA PP A 






IMAZETHAPYR 240 SL 100 G A/HA PP A 

LSD (P=.05) 10.6 


CV 8.89 




THERE WAS NO INJURY IN SOYBEANS WITH THE PREPLANT HERBICIDE APPLICATIONS EVALUATED. VERY LITTLE DIFFERENCE IN THE CONTROL 

OF TAROF WAS OBSERVED AMONG THE HERBICIDE TREATMENTS EVALUATED 36 DAYS AFTER APPLICATION. AT 60 DAYS AFTER APPLICATION, 

AMITROLE PROVIDED SLIGHTLY BETTER CONTROL OF TAROF THAN GLYPHOSATE. THE ADDITION OF EITHER FLUMETSULAM/METOLACHLOR, 

FOE5043/METRIBUZIN, METRIBUZIN OF IMAZETHAPYR TO GLYPHOSATE DID NOT IMPROVE THE CONTROL OF TAROF. AT 88 DAYS AFTER 

APPLICATION, THE HIGH RATE OF AMITROLE PROVIDED BETTER CONTROL OF TAROF THAN THE GLYPHOSATE RATES EVALUATED. 

186

THREE SEEDED MERCURY CONTROL IN CONVENTIONAL SOYEANS WITH PREPLANT HERBICIDES 

DAVE BILYEA, RIDGETOWN WEEDS 


CROP: GLXMA, SOYBEAN (STARBURST). Planted: May-28-00, 2.5 CM Deep Planting Method: PRECISION PLANTER. Emerged On: Jun-05-00 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: DAVIES. 

Site Description: Soil Texture: Loamy very fine sand. %OM: 3.0 %Sand: 83.9 %Silt: 10.1 %Clay: 5.9 pH: 5.4 



Date : Jun-03-00 Crop 1 GLXMA PRE-PLANT 

Time of Day: 11:00 

Method : CO2 

Timing : PRE 


Air Temp. : 15 C 




Soil Moist.: DRY 









Carrier : H2O 



Weed Code ACCRH ACCRH ACCRH AMBEL ACCRH AMBEL 

Crop Code GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA 

Part Rated 




Crop Stage 2 LF 3 TRI 3 TRI 3 TRI 7-8 TRI 7-8 TRI 

Crop Stage Scale 15-17 CM 15-17 CM 15-41 CM 68-85 CM 

Weed Stage 4-8 LF 6-8 LF 10-20+LF 20+ LF 




No. Name Rate Unit Stg Code 

1 CHECK (WEEDY) 0 a 0 a 0 c 0 b 0 c 0 c 

2 CHECK (WEEDY) A 0 a 0 a 0 c 0 b 0 c 0 c 

3 FLUMETSULAM/METOLACH 2215 G A/HA PP A 0 a 0 a 96 a 90 a 97 a 79 b 

5 METRIBUZIN 560 G A/HA PP A 0 a 0 a 94 a 95 a 89 a 84 ab 

6 METRIBUZIN 1120 G A/HA PP A 0 a 4 a 96 a 96 a 96 a 93 a 

7 IMAZETHAPYR 100 G A/HA PP A 0 a 0 a 88 b 94 a 71 b 88 ab 

LSD (P=.05) 0.0 4.6 4.6 5.9 8.3 12.5 


CV 0.0 489.9 4.92 6.28 9.4 14.46 



THERE WAS NO STATISTICALLY SIGNIFICANT INJURY IN SOYBEANS WITH THE PREPLANT HERBICIDE APPLICATIONS EVALUATED. EXCELLENT FULL 

SEASON CONTROL OF ACARH WAS OBTAINED WITH PREPLANT TANKMIXES OF GLYPHOSATE PLUS FLUMETSULAM/METOLACHLOR OR 

METRIBUZIN. THE TANKMIX OF GLYPHOSATE PLUS IMAZETHAPYR PROVIDED GOOD EARLY SEASON CONTROL OF ACARH, BUT THE CONTROL WAS 

REDUCED AS THE SEASON PROGRESSED. THE TANKMIX OF GLYPHOSATE PLUS METRIBUZIN AT THE HIGH RATE PROVIDED EXCELLENT FULL 

SEASON CONTROL OF AMBEL, WHILE THE TANKMIXES OF GLYPHOSATE PLUS FLUMETSULAM/METOLACHLOR, METRIBUZIN (LOW RATE) OR 

IMAZETHAPYR PROVIDED GOOD FULL SEASON CONTROL OF AMBEL. 

187

THREE SEEDED MERCURY CONTROL IN NO-TILL SOYBEANS WITH PREPLANT HERBICIDES 

DAVE BILYEA,RIDGETOWN WEEDS 

Experiment ID: PWS00A4B 

CROP: GLXMA, SOYBEAN Planted: May-30-00 Planting Method: PRECSION PLANTER. Emerged On: Jun-06-00. 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: VAN EERD. 

Site Description: Soil Texture: Fine sandy loam. %OM: 3.8 %Sand: 70.3 %Silt: 17.8 %Clay: 11.9 pH: 5.9 



Date : Jun-03-00 Crop 1 GLXMA PRE-PLANT 


Method : CO2 

Timing : PRE Weed 1 ACCRH 


Stg.Scale: 

Air Temp. : 15 C Density : 

% Humidity : 57 Weed 2 AMBEL 


Stg.Scale: 











Carrier : H2O 



Weed Code ACARH CERAR AMBEL ACARH AMBEL 

Crop Code GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA GLXMA 

Part Rated 

Rating Data Type INJURY INJURY CONTROL CONTROL CONTROL INJURY CONTROL CONTROL 

Rating Unit % % % % % % % % 

Rating Date Jun-16-00 Jul-07-00 Jul-07-00 Jul-07-00 Jul-07-00 Jul-31-00 Jul-31-00 Jul-31-00 

Crop Stage 2 LF 3 TRI 3 TRI 3 TRI 3 TRI 8-9 TRI 8-9 TRI 8-9 TRI 

Crop Stage Scale 15-18 CM 15-18 CM 15-18 CM 15-18 CM 35-41 CM 35-41 CM 35-41 CM 

Weed Stage 2-4 LF 2-4 LF 20+ LF 4-6 LF 7-20+LF 20+ LF 

Weed Density, Unit 5 /M2 5 /M2 19 /M2 5 /M2 8 /M2 8 /M2 

Trt-Eval Interval 7 DAE 28 DAE 28 DAE 28 DAE 28 DAE 56 DAE 56 DAE 56 DAE 


No. Name Rate Unit Stg Code 

1 CHECK (WEEDY) 0 a 0 a 0 c 0 b 0 c 0 a 0 c 0 c 

2 GLYPHOSATE-TRANSORB 900 G A/HA PP A 0 a 0 a 0 c 0 b 0 c 0 a 0 c 0 c 

3 GLYPHOSATE-TRANSORB 900 G A/HA PP A 0 a 3 a 98 a 99 a 98 a 0 a 99 a 93 a 

3 FLUMETSULAM/METOLACH 2215 G A/HA PP A 


5 METRIBUZIN 560 G A/HA PP A 


6 METRIBUZIN 1120 G A/HA PP A 

7 GLYPHOSATE-TRANSORB 900 G A/HA PP A 0 a 0 a 95 b 99 a 88 b 0 a 89 b 85 b 

7 IMAZETHAPYR 100 G A/HA PP A 

LSD (P=.05) 0.0 4.5 2.7 0.0 4.7 0.0 5.0 6.9 

Standard Deviation 0.0 3.0 1.8 0.0 3.1 0.0 3.3 4.6 

CV 0.0 357.77 2.79 0.0 4.95 0.0 5.26 7.52 



THERE WAS NO STATISTICALLY SIGNIFICANT INJURY IN SOYBEANS WITH THE PREPLANT HERBICIDE APPLICATIONS EVALUATED. EXCELLENT FULL 

SEASON CONTROL OF ACARH WAS OBTAINED WITH PREPLANT TANKMIXES OF GLYPHOSATE PLUS FLUMETSULAM/METOLACHLOR OR 

METRIBUZIN. THE TANKMIX OF GLYPHOSATE PLUS IMAZETHAPYR PROVIDED EXCELLENT EARLY SEASON CONTROL OF ACARH, BUT THE 

CONTROL WAS REDUCED SLIGHTLY AT THE LATE SEASON RATING. THE TANKMIXES OF GLYPHOSATE PLUS FLUMETSULAM/METOLACHLOR OR 

METRIBUZIN PROVIDED EXCELLENT FULL SEASON CONTROL OF AMBEL, WHILE THE TANKMIX OF GLYPHOSATE PLUS IMAZETHAPYR PROVIDED 

GOOD FULL SEASON CONTROL OF AMBEL. 

188

THREE SEEDED MERCURY CONTROL IN SOYBEANS WITH POSTEMERGENCE HERBICIDES I 

Peter Sikkema, Dave Bilyea 


CROP: GLXMA, SOYBEAN (Starburst). Planted: May-28-00, 3 cm Deep Planting Method: PRECISION PLANTING. Emerged On: Jun-06-00 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: DAVIES. 




Date : Jun-19-00 Crop 1 GLXMA 1ST TRI 


Method : CO2 

Timing : POST Weed 1 ACARH COT-2 LF 

Placement : BRFOL Stg.Scale: 0.25-0.5 




Stg.Scale: 


Soil Moist.: DAMP 

Weed 3 SOLPT 


Stg.Scale: 

Equipment : CO2 BACKP Density : 

Pressure : 207 kPa Weed 4 CHEAL 


Nozzle Size: 8002 XR Density : 




Carrier : H2O 



Weed Code ACARH AMBEL SOLPT ACARH AMBEL 


Part Rated 



Rating Date Jul-01-00 Jul-18-00 Jul-18-00 Jul-18-00 Jul-18-00 Aug-15-00 Aug-15-00 

Crop Stage 5-6 TRI 5-6 TRI 5-6 TRI 11-12 TR 11-12 TR 

Crop Stage Scale 32-39 CM 32-39 CM 32-39 CM 

Weed Stage 2-14 LF 8-14 LF 2-8 LF 6-20+ LF 20+ LF 

Weed Density, Unit 82 /M2 11 /M2 12 /M2 114 /M2 16 /M2 


Trt-Eval Interval 7 DAE 28 DAE 28 DAE 28 DAE 28 DAE 56 DAE 56 DAE 



1 CHECK (WEEDY) 0 b 0 c 0 g 0 f 0 d 0 f 0 e 

2 ACIFLUORFEN 240 SL 600 G A/HA 1-2 TR A 6 b 0 c 69 e 93 bcd 97 a 68 cd 86 abc 

3 FOMESAFEN 240 SL 240 G A/HA 1-2 TR A 5 b 0 c 88 abc 94 a-d 94 a 83 abc 94 a 

TURBOCHARGE SO 0.500 % V/V 1-2 TR A 

4 BENTAZON (FORTE) 480 SL 1080 G A/HA 1-2 TR A 0 b 0 c 48 f 92 bcd 88 ab 53 d 86 abc 

5 THIFENSULFURON-METHY 75 DF 6 G A/HA 1-2 TR A 3 b 0 c 79 d 81 e 71 c 78 abc 76 d 

AGRAL 90 SO 0.100 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 25 DF 9 G A/HA 1-2 TR A 3 b 0 c 90 ab 91 cd 71 c 91 ab 86 abc 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

7 CHLORIMURON/THIFENSU 33 DF 14.1 G A/HA 1-2 TR A 1 b 0 c 95 a 96 abc 76 bc 90 ab 94 a 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 5 b 0 c 91 a 95 a-d 88 ab 93 a 90 ab 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 240 SL 100 G A/HA 1-2 TR A 0 b 0 c 81 cd 90 d 97 a 78 abc 81 cd 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 240 SL 75 G A/HA 1-2 TR A 1 b 0 c 88 abc 99 a 99 a 75 bc 94 a 

BENTAZON (FORTE) 480 SL 840 G A/HA 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 1 b 0 c 89 abc 97 ab 99 a 78 abc 94 a 

FOMESAFEN 240 EC 200 G A/HA 1-2 TR A 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 0 b 0 c 83 bcd 96 abc 95 a 70 c 88 abc 


UAN 28% SO 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 99 a 94 a 93 a 97 ab 97 a 73 c 84 bcd 

14 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 96 a 81 b 68 e 98 a 95 a 20 e 89 abc 

LSD (P=.05) 6.5 1.9 7.9 5.5 12.9 16.8 8.5 


CV 28.85 10.45 7.28 4.42 10.83 17.41 7.33 



189

THREE SEEDED MERCURY CONTROL IN SOYBEANS WITH POSTEMERGENCE HERBICIDES I 



Weed Code SOLPT CHEAL 

Crop Code 

Part Rated 


CONTROL CONTROL 

Rating Unit % % 

Rating Date Aug-15-00 Aug-15-00 

Crop Stage 11-12 TR 11-12 TR 


Weed Stage 6-10 LF 20+ LF 

Weed Density, Unit 3 /M2 15 /M2 


Trt-Eval Interval 56 DAE 56 DAE 



1 CHECK (WEEDY) 0 g 0 e 

2 ACIFLUORFEN 240 SL 600 G A/HA 1-2 TR A 94 ab 78 d 

3 FOMESAFEN 240 SL 240 G A/HA 1-2 TR A 88 abc 86 c 


4 BENTAZON (FORTE) 480 SL 1080 G A/HA 1-2 TR A 94 ab 94 ab 

5 THIFENSULFURON-METHY 75 DF 6 G A/HA 1-2 TR A 58 f 93 abc 

AGRAL 90 SO 0.100 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 25 DF 9 G A/HA 1-2 TR A 79 cde 76 d 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

7 CHLORIMURON/THIFENSU 33 DF 14.1 G A/HA 1-2 TR A 69 e 95 a 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 76 de 78 d 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 240 SL 100 G A/HA 1-2 TR A 90 ab 94 ab 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 240 SL 75 G A/HA 1-2 TR A 95 a 95 a 


UAN 28 % SO 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 93 ab 93 abc 


AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 93 ab 94 ab 


UAN 28% SO 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 84 bcd 88 bc 

14 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 93 ab 91 abc 

LSD (P=.05) 10.2 7.2 

Standard Deviation 7.1 5.1 

CV 9.06 6.15 




THE APPLICATION OF THIFENSULFURON-METHYL AND CHLORIMURON- ETHYL/THIFENSULFURON-METHYL RESULTED IN VISUAL INJURY IN 

CONVENTIONAL SOYBEANS 7 DAYS AFTER APPLICATION, BUT THE CROP RECOVERED QUICKLY WITH NO INJURY OBSERVED 28 DAYS AFTER 

APPLICATION. THE APPLICATION OF GLYPHOSATE AND GLUFOSINATE RESULTED IN SIGNIFICANT INJURY IN CONVENTIONAL BEANS AS 

EXPECTED. CHLORIMURON-ETHYL, CHLORIMURON-ETHYL/THIFENSULFURON-METHYL AND CLORANSULAM-METHYL PROVIDED THE BEST 

POSTEMERGENCE CONTROL OF ACARH, FOLLOWED BY FOMESAFEN. FOMESAFEN, CHLORIMURON- ETHYL/THIFENSULFURON-METHYL, 

CLORANSULAM-METHYL, IMAZETHAPYR PLUS BENTAZON AND IMAZAMOX PLUS FOMESAFEN ALL PROVIDED GREATER THAN 90 % CONTROL OF 

AMBEL. THIFENSULFURON-METHYL, CHLORIMURON- ETHYL, CHLORIMURON-ETHYL/THIFENSULFURON-METHYL AND CLORANSULAM- METHYL 

WERE WEAK ON SOLPT. ACIFLUORFEN, FOMESAFEN, CHLORIMURON- ETHYL AND CLORANSULAM-METHYL WERE WEAK ON CHEAL. 

190

THREE SEEDED MERCURY CONTROL IN SOYBEANS WITH POSTEMERGENCE HERBICIDES II 



CROP: GLXMA, SOYBEAN Planted: May-30-00 Planting Method: PRECISION PLANTING. Emerged On: Jun-06-00. 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: VAN EERD. 



Date : Jun-27-00 Crop 1 GLXMA 2ND TRI 


Method : CO2 

Timing : POST Weed 1 ACARH COT-2 LF 

Placement : BRFOL 

Stg.Scale: 0.25-1 CM 




Stg.Scale: 


Soil Moist.: 









Carrier : H2O 



Weed Code ACARH AMBEL ACARH AMBEL 


Part Rated 



Rating Date Jul-07-00 Jul-26-00 Jul-26-00 Jul-26-00 Aug-24-00 Aug-24-00 

Crop Stage 3RD TRI 6TH TRI 6TH TRI 6TH TRI 12 TH TR 12 TH TR 

Crop Stage Scale 15-18 CM 34-51 CM 34-51 CM 34-51 CM 110-115 110-115 

Weed Stage 2-4 LF 6-8 LF 6-8 LF 20+ LF 14-20+ L 20+ LF 

Weed Density, Unit 5 /M2 6 /M2 6 /M2 5 /M2 8 /M2 4 /M2 





1 CHECK (WEEDY) 0 g 0 b 0 d 0 c 0 d 0 c 

2 ACIFLUORFEN 240 SL 600 G A/HA 1-2 TR A 11 bcd 0 b 91 ab 97 a 90 ab 95 a 

3 FOMESAFEN 240 SL 240 G A/HA 1-2 TR A 15 b 0 b 96 ab 98 a 93 ab 97 a 


4 BENTAZON (FORTE) 480 SL 1080 G A/HA 1-2 TR A 1 fg 0 b 89 b 91 a 86 bc 88 a 

5 THIFENSULFURON-METHY 75 DF 6 G A/HA 1-2 TR A 3 efg 0 b 92 ab 97 a 90 ab 93 a 

AGRAL 90 SO 0.100 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 25 DF 9 G A/HA 1-2 TR A 6 c-g 0 b 96 ab 93 a 94 ab 90 a 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

7 CHLORIMURON/THIFENSU 33 DF 14.1 G A/HA 1-2 TR A 9 b-f 0 b 96 ab 94 a 94 ab 91 a 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 1 fg 0 b 99 a 99 a 95 ab 96 a 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 240 SL 100 G A/HA 1-2 TR A 9 b-f 0 b 92 ab 95 a 89 ab 91 a 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 240 SL 75 G A/HA 1-2 TR A 4 d-g 0 b 98 ab 98 a 94 ab 96 a 


UAN 28 % SO 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 13 bc 0 b 99 a 97 a 96 a 92 a 


AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 10 b-e 0 b 89 b 82 b 89 ab 70 b 


UAN 28% SO 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 4 d-g 0 b 99 a 98 a 97 a 96 a 

14 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 70 a 53 a 79 c 96 a 79 c 92 a 

LSD (P=.05) 7.7 1.9 9.7 8.7 9.7 11.2 


CV 48.74 35.63 7.88 6.88 8.05 9.23 



191

THREE SEEDED MERCURY CONTROL IN SOYBEANS WITH POSTEMERGENCE HERBICIDES II 




THERE WAS SIGNIFICANT VISUAL INJURY OBSERVED IN ROUNDUP READY SOYBEANS WITH MANY OF THE CONVENTIONAL HERBICIDES 7 DAYS 

AFTER APPLICATION, BUT THE CROP RECOVERED QUICKLY WITH NO INJURY OBSERVED 28 DAYS AFTER APPLICATION. THE APPLICATION OF 

GLUFOSINATE RESULTED IN SIGNIFICANT INJURY IN ROUNDUP READY BEANS AS EXPECTED. GOOD TO EXCELLENT FULL SEASON CONTROL OF 

ACARH WAS OBTAINED WITH ALL THE HERBICIDES TREATMENTS EVALUATED WITH THE EXCEPTION OF GLUFOSINATE. GOOD TO EXCELLENT 

CONTROL OF AMBEL WAS OBTAINED WITH ALL THE HERBICIDE TREATMENTS EVALUATED WITH THE EXCEPTION OF IMAZAMOX PLUS 

BENTAZON. 

192

BIENNIAL WORMWOOD CONTROL IN SOYBEANS (NO GLYPHOSATE BURNDOWN) 




Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: VANDAMME. 

Site Description: Soil Texture: Clay Loam. %OM: 3.3 %Sand: 20.2 %Silt: 46.5 %Clay: 33.3 pH: 5.4 



Date : Jun-20-00 Crop 1 GLXMA COT 


Method : CO2 

Timing : POST Weed 1 ARTBI 4-100+ LF 

Placement : BRFOL 





Stg.Scale: 


Soil Moist.: ADEQUATE 









Carrier : H2O 



Weed Code ARTBI AMBEL ARTIBI AMBEL 


Part Rated 




Crop Stage 

Crop Stage Scale 4 TRI 4 TRI 8 TRI 8 TRI 

Weed Stage 20 + LF 20 + LF 20 + LF 20 + LF 






1 CHECK (WEEDY) 0 a 0 a 0 d 0 e 0 b 0 b 

2 ACIFLUORFEN 240 SL 600 G A/HA 1-2 TR A 0 a 0 a 54 bc 69 b 0 b 0 b 

3 FOMESAFEN 240 SL 240 G A/HA 1-2 TR A 0 a 0 a 60 bc 65 bc 0 b 0 b 


4 BENTAZON (FORTE) 480 SL 1080 G A/HA 1-2 TR A 0 a 0 a 48 c 0 e 0 b 0 b 

5 THIFENSULFURON-METHY 75 DF 6 G A/HA 1-2 TR A 0 a 0 a 55 bc 53 cd 0 b 0 b 

AGRAL 90 SO 0.100 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 25 DF 9 G A/HA 1-2 TR A 0 a 0 a 64 abc 71 b 0 b 0 b 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

7 CHLORIMURON/THIFENSU 33 DF 14.1 G A/HA 1-2 TR A 0 a 0 a 68 abc 78 ab 0 b 0 b 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 0 a 0 a 70 ab 90 a 0 b 0 b 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 240 SL 100 G A/HA 1-2 TR A 0 a 0 a 61 bc 78 ab 0 b 0 b 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 240 SL 75 G A/HA 1-2 TR A 0 a 0 a 74 ab 70 b 0 b 0 b 


UAN 28 % SO 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 0 a 0 a 46 c 74 b 0 b 0 b 


AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 0 a 0 a 60 bc 38 d 0 b 0 b 


UAN 28% SO 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 0 a 0 a 84 a 90 a 70 a 74 a 

14 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 0 a 0 a 71 ab 74 b 0 b 0 b 

LSD (P=.05) 0.0 0.0 21.8 15.3 2.7 3.6 


CV 0.0 0.0 26.26 17.65 37.8 48.02 



193

BIENNIAL WORMWOOD CONTROL IN SOYBEANS (NO GLYPHOSATE BURNDOWN) 




THERE WAS NO INJURY IN SOYBEANS WITH THE HERBICIDE APPLICATIONS EVALUATED. THE LEVEL OF WEED CONTROL IN THIS EXPERIMENT 

WAS POOR SINCE NO PREPLANT BURNDOWN APPLICATION WAS APPLIED. GLYPHOSATE WAS THE ONLY TREATMENT WHICH PROVIDED 

GREATER THAN 80 % CONTROL OF ARTBI 28 DAYS AFTER APPLICATION. CLORANSULAM-METHYL AND GLYPHOSATE PROVIDED THE BEST 

CONTROL OF AMBEL 28 DAYS AFTER APPLICATION. BY 56 DAYS AFTER APPLICATION NO CONTROL OF ARTBI AND AMBEL WAS OBSERVED. 

194

BIENNIAL WORMWOOD CONTROL IN SOYBEANS (ROUNDUP BURNDOWN) 




Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: VANDAMME. 

Site Description: Soil Texture: Clay Loam. %OM: 3.3 %Sand: 20.2 %Silt: 46.5 %Clay: 33.3 pH: 5.4 

Note: Glyphosate burndown applied May-5-00, 0.9 kg ai/ha. 



Date : Jun-20-00 Crop 1 GLXMA 


Method : 

Timing : Weed 1 ARTBI 2-6 LF 

Placement : Stg.Scale: 0.25-0.35 



Wind Speed : 26 km/h Stg.Scale: 


Soil Moist.: 

Cloud Cover: 50 % 








Carrier : H2O 



Weed Code ARTBI AMBEL ARTBI AMBEL 


Part Rated 



Rating Date Jul-13-00 Aug-01-00 Aug-01-00 Aug-01-00 Aug-28-00 Aug-28-00 

Crop Stage 3 rd TRI 4TH TRI 4TH TRI 4TH TRI 9TH TRI 9TH TRI 

Crop Stage Scale 12 CM 18-20 CM 18-20 CM 18-20 CM 40 CM 40 CM 

Weed Stage 6-20+ LF 6-20+ LF 20 + LF 20 + LF 






1 CHECK (WEEDY) 0 c 0 c 0 d 0 e 0 g 0 f 

2 ACIFLUORFEN 240 SL 600 G A/HA 1-2 TR A 5 c 0 c 86 ab 88 a 60 c-f 70 abc 

3 FOMESAFEN 240 SL 240 G A/HA 1-2 TR A 5 c 0 c 74 c 86 a 49 ef 59 cde 


4 BENTAZON (FORTE) 480 SL 1080 G A/HA 1-2 TR A 0 c 0 c 88 a 68 cd 70 a-d 66 bcd 

5 THIFENSULFURON-METHY 75 DF 6 G A/HA 1-2 TR A 3 c 0 c 79 abc 65 d 56 def 48 de 

AGRAL 90 SO 0.100 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

6 CHLORIMURON-ETHYL 25 DF 9 G A/HA 1-2 TR A 5 c 0 c 89 a 81 ab 76 abc 65 bcd 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

7 CHLORIMURON/THIFENSU 33 DF 14.1 G A/HA 1-2 TR A 6 c 0 c 89 a 85 a 81 a 76 abc 

AGRAL 90 SO 0.200 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

8 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 0 c 0 c 75 bc 90 a 70 a-d 86 a 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

9 IMAZETHAPYR 240 SL 100 G A/HA 1-2 TR A 0 c 0 c 89 a 81 ab 63 b-e 71 abc 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

10 IMAZETHAPYR 240 SL 75 G A/HA 1-2 TR A 0 c 0 c 89 a 80 abc 86 a 83 ab 


UAN 28 % SO 2.000 L/HA 1-2 TR A 

11 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 5 c 0 c 75 bc 81 ab 59 def 61 cde 


AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28% SO 2.000 L/HA 1-2 TR A 

12 IMAZAMOX 70 WG 25 G A/HA 1-2 TR A 4 c 0 c 88 a 78 a-d 78 ab 74 abc 


UAN 28% SO 2.000 L/HA 1-2 TR A 

13 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 83 a 96 a 90 a 90 a 80 a 81 ab 

14 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 36 b 43 b 73 c 70 bcd 45 f 45 e 

LSD (P=.05) 8.4 2.7 11.9 13.3 17.4 19.0 


CV 54.12 18.79 10.8 12.5 19.53 21.05 



195

BIENNIAL WORMWOOD CONTROL IN SOYBEANS (ROUNDUP BURNDOWN) 

DAVE BILYEA, Peter Sikkema Experiment ID: PWS00C11B 


THE APPLICATION OF IMAZAMOX PLUS BENTAZON RESULTED IN COMMERCIALLY SIGNIFICANT INJURY IN CONVENTIONAL SOYBEANS SHORTLY 

AFTER APPLICATION BUT THE CROP RECOVERED QUICKLY. THE APPLICATION OF GLYPHOSATE AND GLUFOSINATE ALSO RESULTED IN 

SIGNIFICANT INJURY IN CONVENTIONAL SOYBEANS AS EXPECTED. THE BEST FULL SEASON CONTROL OF ARTBI WAS OBTAINED WITH 

BENTAZON, CHLORIMURON-ETHYL, CHLORIMURON-ETHYL/THIFENSULFURON-METHYL, CLORANSULAM-METHYL, IMAZETHAPYR PLUS 

BENTAZON, IMAZAMOX PLUS BENTAZON AND GLYPHOSATE. THE BEST FULL SEASON CONTROL (GREATER THAN 80 %) OF AMBEL WAS 

OBTAINED WITH CLORANSULAM-METHYL, IMAZETHAPYR PLUS BENTAZON AND GLYPHOSATE. 

196

CRABGRASS CONTROL IN ROUNDUP READY SOYBEANS WITH POSTEMERGENCE HERBICIDES I 



CROP: GLXMA, SOYBEAN (PIONEER 92B51 RR). Planted: May-24-00, 400000 SE/HA, 2.5 CM Deep, 75 CM Row Width. 

Planting Method: PRECISION PLANTING. Emerged On: Jun-05-00. 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: BUSH PLOTS. 

Site Description: Soil Texture: VERY FINE SANDY LOAM. %OM: 5.9 %Sand: 77 %Silt: 13 %Clay: 10 pH: 6.9 




Date : Jul-01-00 Jul-07-00 Crop 1 GLXMA 2ND TRI 4TH TRI 

Time of Day: 11:00 Height : 10 CM 24 CM 

Method : 

Timing : POST POST Weed 1 DIGSA 3-7 LF 5-12 LF 


Air Temp. : 26 C 24 C Density : 6 /M2 6 /M2 


Wind Speed : 0 KPH 3 KPH 


N 

Soil Moist.: DAMP 

DRY 


Equipment : CO2 BACKP CO2 BACKP 



Nozzle Size: 8002 XR 8002 XR 


Boom Length: 2.0 M 2.0 M 


Carrier : H2O H2O 

Appl.Volume: 200 L/HA 200 L/HA 


CO2 

Weed Code DIGSA DIGSA 

Crop Code 

GLXMA 

Part Rated 

Rating Data Type INJURY CONTROL CONTROL 


Rating Date Aug-02-00 Aug-02-00 Aug-28-00 

Crop Stage 7-8 tri 7-8 tri 12 tri 


Weed Stage 12-20+LF 12-20+LF 14-20+LF 



Trt-Eval Interval 28 DAT 28 DAT 56 DAT 



1 CHECK (WEEDY) 0 a 0 d 0 d 

2 FLUAZIFOP-P-BUTYL 25 DG 0.125 KG A/HA POST 1 A 0 a 90 bc 85 b 

TURBOCHARGE SO 0.500 % V/V POST 1 A 

3 FLUAZIFOP-P-BUTYL 25 DG 0.125 KG A/HA POST 2 B 0 a 99 a 96 a 

TURBOCHARGE SO 0.500 % V/V POST 2 B 

4 QUIZALOFOP-P-ETHYL 96 EC 0.036 KG A/HA POST 1 A 0 a 96 ab 90 ab 

CANPLUS SO 0.500 % V/V POST 1 A 

5 QUIZALOFOP-P-ETHYL 96 EC 0.036 KG A/HA POST 2 B 0 a 93 ab 88 ab 

CANPLUS SO 0.500 % V/V POST 2 B 

6 FENOXAPROP-P-ETHYL 80.5 EC 0.054 KG A/HA POST 1 A 0 a 98 a 95 ab 

7 FENOXAPROP-P-ETHYL 80.5 EC 0.054 KG A/HA POST 2 B 0 a 96 ab 94 ab 

8 CLETHODIM 240 EC 0.030 KG A/HA POST 1 A 0 a 94 ab 89 ab 

AMIGO SO 0.500 % V/V POST 1 A 

9 CLETHODIM 240 EC 0.030 KG A/HA POST 2 B 0 a 89 bc 85 b 

AMIGO SO 0.500 % V/V POST 2 B 

10 SETHOXYDIM 184 EC 0.150 KG A/HA POST 1 A 0 a 89 bc 86 ab 

MERGE SO 1.000 L/HA POST 1 A 

11 SETHOXYDIM 184 EC 0.150 KG A/HA POST 2 B 0 a 83 c 74 c 

MERGE SO 1.000 L/HA POST 2 B 

12 GLYPHOSATE-TRANSORB 360 SL 0.900 KG A/HA POST 1 A 0 a 96 ab 91 ab 

13 GLYPHOSATE-TRANSORB 360 SL 0.900 KG A/HA POST 2 B 0 a 99 a 94 ab 

LSD (P=.05) 0.0 8.0 11.0 


CV 0.0 6.47 9.38 




THERE WAS NO INJURY IN ROUNDUP READY SOYBEANS WITH THE POSTEMERGENCE HERBICIDES EVALUATED. SETHOXYDIM PROVIDED 

SLIGHTLY POORER CONTROL OF DIGSA THAN FLUAZIFOP-P-BUTYL, QUIZALOFOP-P-ETHYL, FENOXAPROP–P-ETHYL AND CLETHODIM, 

ESPECIALLY AT THE LATE APPLICATION TIMING. GLYPHOSATE PROVIDED EXCELLENT CONTROL OF DIGSA. 

197

CRABGRASS CONTROL IN ROUNDUP READY SOYBEANS WITH POSTEMERGENCE HERBICIDES II 



CROP: GLXMA, SOYBEAN (PIONEER 92B61). Planted: Jun-01-00, 2 cm Deep, 50 cm Row Width. Planting Method: PRECISION PLANTER 

Emerged On: Jun-15-00. 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: GILLARD. 

Site Description: Soil Texture: Loam. %OM: 3.9 %Sand: 48.7 %Silt: 34.8 %Clay: 16.5 pH: 5.5 




Date : Jun-29-00 Jul-07-00 Crop 1 GLXMA 2 TRI 4 TRI 

Time of Day: 13:00 11:30 Height : 

Method : 

Timing : POST 1 POST 2 Weed 1 DIGSA 3-5 LF 5-8 LF 



% Humidity : 74 46 Weed 2 ZEAMAX 

Wind Speed : 12 KPH 8 KPH Stg.Scale: 

Dew Present: N N Density : 


DRY 












CO2 

Weed Code DIGSA ZEAMX DIGSA ZEAMX 


Part Rated 




Crop Stage 6-7 TRI 6-7 TRI 6-7 TRI 12 TRI 12 TRI 


Weed Stage 8-20 LF 4-7 LF 20 + LF 6-8 LF 



Trt-Eval Interval 7 DAE 28 DAE 28 DAE 28 DAE 56 DAT 56 DAT 



1 CHECK (WEEDY) 0 c 0 c 0 f 0 e 0 e 0 f 

2 FLUAZIFOP-P-BUTYL 25 DG 0.125 KG A/HA POST 1 A 0 c 0 c 91 a-d 98 ab 95 a 89 cde 

TURBOCHARGE SO 0.500 % V/V POST 1 A 

3 FLUAZIFOP-P-BUTYL 25 DG 0.125 KG A/HA POST 2 B 0 c 0 c 98 a 99 a 96 a 99 a 

TURBOCHARGE SO 0.500 % V/V POST 2 B 

4 QUIZALOFOP-P-ETHYL 96 EC 0.036 KG A/HA POST 1 A 0 c 0 c 89 bcd 97 ab 90 abc 96 abc 

CANPLUS SO 0.500 % V/V POST 1 A 

5 QUIZALOFOP-P-ETHYL 96 EC 0.036 KG A/HA POST 2 B 0 c 0 c 97 ab 98 ab 95 a 98 ab 

CANPLUS SO 0.500 % V/V POST 2 B 

6 FENOXAPROP-P-ETHYL 80.5 EC 0.054 KG A/HA POST 1 A 0 c 0 c 88 cd 99 a 84 bcd 99 a 

7 FENOXAPROP-P-ETHYL 80.5 EC 0.054 KG A/HA POST 2 B 0 c 0 c 96 ab 99 a 96 a 99 a 

8 CLETHODIM 240 EC 0.030 KG A/HA POST 1 A 0 c 0 c 89 bcd 96 ab 90 abc 94 a-d 

AMIGO SO 0.500 % V/V POST 1 A 

9 CLETHODIM 240 EC 0.030 KG A/HA POST 2 B 0 c 0 c 95 abc 93 bc 90 abc 91 b-e 

AMIGO SO 0.500 % V/V POST 2 B 

10 SETHOXYDIM 184 EC 0.150 KG A/HA POST 1 A 0 c 0 c 85 de 89 cd 83 cd 88 de 

MERGE SO 1.000 L/HA POST 1 A 

11 SETHOXYDIM 184 EC 0.150 KG A/HA POST 2 B 0 c 0 c 79 e 88 d 76 d 85 e 

MERGE SO 1.000 L/HA POST 2 B 

12 GLYPHOSATE-TRANSORB 360 SL 0.900 KG A/HA POST 1 A 90 a 91 b 94 abc 98 ab 93 ab 98 ab 

13 GLYPHOSATE-TRANSORB 360 SL 0.900 KG A/HA POST 2 B 55 b 96 a 98 a 94 abc 89 abc 93 a-d 

LSD (P=.05) 2.7 2.0 8.3 5.3 9.6 7.5 


CV 17.09 9.58 6.84 4.24 8.12 6.02 




THERE WAS NO INJURY IN CONVENTIONAL SOYBEANS WITH THE APPROVED HERBICIDES. GLYPHOSATE CAUSED SIGNIFICANT INJURY IN 

CONVENTIONAL SOYBEANS AS EXPECTED. SETHOXYDIM PROVIDED POORER CONTROL OF DIGSA THAN FLUAZIFOP-P-BUTYL, 

QUIZALOFOP-P-ETHYL, FENOXAPROP–P-ETHYL AND CLETHODIM. THERE WAS A TREND TO IMPROVED CONTROL OF DIGSA WITH THE 

ARYLOXYPHENOXY PROPIONATES WITH THE LATER APPLICATION AT THE 5-8 LEAF STAGE. GLYPHOSATE PROVIDED EXCELLENT CONTROL OF 

DIGSA. SETHOXYDIM ALSO WAS SLIGHTLY WEAKER ON VOLUNTEER ZEAMX THAN THE OTHER POST EMERGENCE GRASS HERBICIDES. 

198

HORSENETTLE CONTROL IN SOYBEANS I 



CROP: GLXMA, SOYBEAN (NR 20B9). Planted: Jun-03-00, 180000 SE/HA Planting Method: PRECISION PLANTING. Emerged On: Jun-09-00 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: GEYTVAI. 

Site Description: Soil Texture: Fine sand. %OM: 3.2 %Sand: 88.7 %Silt: 6.7 %Clay: 4.6 pH: 6.4 




Date : Jun-19-00 Jul-06-00 Crop 1 GLXMA 1ST TRI 3RD TRI 


Method : CO2 CO2 

Timing : POST 1 POST 2 Weed 1 SOLCA 1-3 LF 4-10 LF 

Placement : BRFOL BRFOL Stg.Scale: 1-8 CM 4-9 CM 


% Humidity : 35 37 

Wind Speed : 4 KPH 3 KPH 


N 

Soil Moist.: 












CO2 

Weed Code SOLCA SOLCA 

Crop Code 

GLXMA 

Part Rated 

Rating Data Type INJURY CONTROL CONTROL 


Rating Date Jul-20-00 Jul-20-00 Aug-15-00 

Crop Stage 6TH TRI 6TH TRI 12-13 TR 

Crop Stage Scale 33 CM 33 CM 50 CM 

Weed Stage 6-14 LF 6-14 LF 6-16 LF 

Weed Density, Unit 19 /M2 19 .M2 16 /M2 


Trt-Eval Interval 28 DAT 28 DAT 56 DAT 



1 CHECK (WEEDY) 0 c 0 e 0 d 

2 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 0 c 69 bcd 71 bc 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

3 CLORANSULAM-METHYL 84 WG 35 G A/HA 1-2 TR A 0 c 66 cd 74 abc 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

4 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 0 c 84 ab 81 ab 

5 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 0 c 89 a 91 a 

GLYPHOSATE 360 SL 900 G A/HA 3-4 TR B 

6 GLYPHOSATE 360 SL 1800 G A/HA 1-2 TR A 0 c 61 d 86 ab 

7 GLYPHOSATE 360 SL 1800 G A/HA 1-2 TR A 0 c 88 a 91 a 


8 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 0 c 85 ab 88 ab 

CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

9 GLYPHOSATE 360 SL 1800 G A/HA 1-2 TR A 0 c 83 abc 88 ab 


UAN 28 % SO 2.000 L/HA 1-2 TR A 

10 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 85 b 79 abc 61 c 

11 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 93 a 93 a 80 ab 

GLUFOSINATE 200 SL 400 G A/HA 3-4 TR B 

LSD (P=.05) 2.8 17.4 17.6 


CV 12.06 16.72 16.51 




THERE WAS NO INJURY IN ROUNDUP READY SOYBEANS WITH THE APPROVED HERBICIDES. GLUFOSINATE CAUSED SIGNIFICANT INJURY IN 

ROUNDUP READY SOYBEANS AS EXPECTED. CLORANSULAM-METHYL PROVIDED FAIR FULL SEASON CONTROL OF SOLCA. A SINGLE 

APPLICATION OF GLYPHOSATE PROVIDED GOOD CONTROL OF SOLCA. THERE WAS NO DIFFERENCE BETWEEN THE TWO RATES OF 

GLYPHOSATE EVALUATED. THE CONTROL IMPROVED NUMERICALLY WITH THE SEQUENTIAL APPLICATION. THERE WAS NO BENEFIT OF ADDING 

CLORANSULAM-METHYL TO GLYPHOSATE COMPARED TO GLYPHOSATE ALONE IN ROUNDUP READY SOYBEANS. GLUFOSINATE PROVIDED 

GOOD EARLY SEASON CONTROL OF SOLCA. THE FULL SEASON CONTROL OF SOLCA WAS IMPROVED WITH THE SEQUENTIAL APPLICATION OF 

GLUFOSINATE. 

199

HORSENETTLE CONTROL IN SOYBEANS II 



CROP: GLXMA, SOYBEAN Planted: May-25-00, 3 cm Deep Planting Method: Precision Planter. Emerged On: Jun-02-00. 

Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: MYERS. 

Site Description: Soil Texture: Loamy Fine sand. %OM: 2.1 %Sand: 86.7 %Silt: 7.9 %Clay: 5.4 pH: 5.7 




Date : Jun-20-00 Jul-01-00 Crop 1 GLXMA 

Time of Day: 10:30 10:00 Height : 25 cm 32 cm 

Method : Co2 Co2 

Timing : Post Post Weed 1 SOLCA 5-9 LF 3-11 LF 

Placement : BRFOL BRFOL Stg.Scale: 5-10 CM 4-13 CM 



Wind Speed : 6 Kph 4 kph 


N 

Soil Moist.: ADEQUATE MOIST 












CO2 

Weed Code SOLCA SOLCA CHEAL 


Part Rated 

Rating Data Type INJURY INJURY CONTROL CONTROL CONTROL 


Rating Date Jul-01-00 Jul-20-00 Jul-20-00 Aug-15-00 Aug-15-00 

Crop Stage 11-12 TR 11-12 TR 


Weed Stage 5-8 LF 5-8 LF 6-12 LF 20+ LF 



Trt-Eval Interval 7 DAE 28 DAE 28 DAE 56 DAE 56 DAE 



1 CHECK (WEEDY) 0 b 0 c 0 c 0 e 0 d 

2 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR A 0 b 0 c 88 ab 76 cd 69 b 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

3 CLORANSULAM-METHYL 84 WG 35 G A/HA 1-2 TR A 0 b 0 c 89 ab 79 c 69 b 

AGRAL 90 SO 0.250 % V/V 1-2 TR A 

UAN 28 % SO 2.000 L/HA 1-2 TR A 

4 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 0 b 0 c 91 a 88 ab 98 a 



6 GLYPHOSATE 360 SL 1800 G A/HA 1-2 TR A 0 b 0 c 95 a 85 b 99 a 

7 GLYPHOSATE 360 SL 1800 G A/HA 1-2 TR A 0 b 0 c 95 a 91 a 99 a 


8 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR A 0 b 0 c 89 ab 86 ab 97 a 


UAN 28 % SO 2.000 L/HA 1-2 TR A 



UAN 28 % SO 2.000 L/HA 1-2 TR A 

10 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 50 a 48 b 81 b 73 d 53 c 

11 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR A 50 a 70 a 89 ab 75 cd 63 bc 

GLUFOSINATE 200 SL 400 G A/HA 3-4 TR B 

LSD (P=.05) 3.6 3.9 7.9 5.1 12.9 


CV 27.08 24.98 6.73 4.64 11.68 




THERE WAS NO INJURY IN ROUNDUP READY SOYBEANS WITH THE APPROVED HERBICIDES. GLUFOSINATE CAUSED SIGNIFICANT INJURY IN 

ROUNDUP READY SOYBEANS AS EXPECTED. CLORANSULAM-METHYL PROVIDED FAIR FULL SEASON CONTROL OF SOLCA. A SINGLE 

APPLICATION OF GLYPHOSATE PROVIDED GOOD CONTROL OF SOLCA. THERE WAS NO DIFFERENCE BETWEEN THE TWO RATES OF 

GLYPHOSATE EVALUATED. THE CONTROL IMPROVED NUMERICALLY WITH THE SEQUENTIAL APPLICATION. THERE WAS NO BENEFIT OF ADDING 

CLORANSULAM-METHYL TO GLYPHOSATE COMPARED TO GLYPHOSATE ALONE IN ROUNDUP READY SOYBEANS. GLUFOSINATE PROVIDED 

GOOD EARLY SEASON CONTROL OF SOLCA. THE FULL SEASON CONTROL OF SOLCA WAS IMPROVED WITH THE SEQUENTIAL APPLICATION OF 

GLUFOSINATE. 

200

PERENNIAL SOWTHISTLE CONTROL IN SOYBEANS 

PETER SIKKEMA, TODD COWAN 


CROP: GLXMA, SOYBEAN (PIONEER 91B64). Planted: Jun-05-00, 500000 SEED/HA, 4 CM Deep, 75 CM Row Width. 

Planting Method: PRECISION PLANTER. Emerged On: Jun-12-00. 

FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 10 M. Expt. Location: GIBSON. 





Date : Jun-27-00 Jul-06-00 Crop 1 GLXMA 1 TRI 3 TRI 

Time of Day: 10:00 PM 8:40 PM Height : 10.5 CM 17.1 CM 

Method : CO2 SPRAY CO2 SPRAY 

Timing : 1 TRI 3 TRI Weed 1 SONAR 11 LEAF 9 LF 

Placement : FOLIAR FOLIAR Stg.Scale: 9.0 CM 9.75 CM 

Air Temp. : 15.2 C 14.7 C Density : 21 SQ.M 25 SQ.M 


Wind Speed : 0 KM/H 2.7 KM/H 

Dew Present: Y 

N 

Soil Moist.: MOIST DRY 


Equipment : CO2 SPRAY CO2 SPRAY 



Nozzle Size: 8002 VS 8002 VS 



2 M 




Propellant : WATER WATER 

Weed Code SONAR SONAR 


Part Rated 

Rating Data Type INJURY INJURY CONTROL CONTROL 


Rating Date Jul-06-00 Jul-24-00 Jul-24-00 Aug-21-00 

Crop Stage 3 TRI 6 TRI 6 TRI 10 TRI 


Weed Stage 20 LEAF 15 LEAF 

Weed Density, Unit 42 SQ.M 45 SQ.M 




1 CHECK (WEEDY) 0 b 0 c 0 f 0 e 

2 CLORANSULAM-METHYL 84 WG 17.5 G A/HA 1-2 TR 1 b 0 c 50 cd 66 abc 

AGRAL 90 SO 0.250 % V/V 1-2 TR 

UAN 28 % SO 2.000 L/HA 1-2 TR 

3 CHLORIMURON-ETHYL 25 DF 9 G A/HA 1-2 TR 0 b 0 c 63 bc 69 abc 

AGRAL 90 SO 0.200 % V/V 1-2 TR 

4 CHLORIMURON/THIFENSU 33 DF 14.1 G A/HA 1-2 TR 0 b 0 c 65 bc 60 bcd 

AGRAL 90 SO 0.200 % V/V 1-2 TR 

UAN 28 % SO 2.000 L/HA 1-2 TR 

5 IMAZETHAPYR 240 SL 75 G A/HA 1-2 TR 0 b 0 c 51 c 60 bcd 

BENTAZON (FORTE) 480 SL 840 G A/HA 1-2 TR 

UAN 28 % SO 2.000 L/HA 1-2 TR 

6 IMAZAMOX 70 WG 25 G A/HA 1-2 TR 0 b 0 c 28 de 36 cd 

FOMESAFEN 240 EC 200 G A/HA 1-2 TR 

AGRAL 90 SO 0.250 % V/V 1-2 TR 

UAN 28% SO 2.000 L/HA 1-2 TR 

7 IMAZAMOX 70 WG 25 G A/HA 1-2 TR 0 b 0 c 0 f 30 de 

BENTAZON (FORTE) 480 SL 600 G A/HA 1-2 TR 

UAN 28% SO 2.000 L/HA 1-2 TR 

8 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR 0 b 0 c 75 ab 68 abc 

9 GLYPHOSATE 360 SL 900 G A/HA 1-2 TR 0 b 0 c 91 a 96 a 

GLYPHOSATE 360 SL 900 G A/HA 3-4 TR 

10 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR 53 a 21 b 19 ef 31 de 

11 GLUFOSINATE 200 SL 400 G A/HA 1-2 TR 50 a 93 a 89 a 78 ab 

GLUFOSINATE 200 SL 400 G A/HA 3-4 TR 

LSD (P=.05) 5.3 2.9 23.7 33.3 


CV 39.31 19.46 34.07 42.67 


The application of glufosinate in Roundup Ready soybeans resulted in significant visual crop injury as would be expected. There was no injury with the other herbicide treatments 

evaluated. The sequential application of glyphosate or glufosinate provided the best full season control of SONAR. The application of cloransulam-methyl, chlorimuron-ethyl, 

chlorimuron-ethyl/thifensulfuron-methyl, imazethapyr plus bentazon and a single application of glyphosate all provided fair control of SONAR. Imazamox plus fomesafen, 

imazamox plus bentazon and a single application of glufosinate provided poor full season control of SONAR. 

201

PROSO MILLET CONTROL IN ROUNDUP READY SOYBEANS WITH POSTEMERGENCE HERBICIDES I 

Ridgetown Weeds, KATHARINE SAUNDERS 


CROP: GLXMA, SOYBEAN (ROUNDUP READY). Planted: Jun-05-00, 70000 SEEDS/HA, 5 CM Deep, 75 CM Row Width. 


FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 10 M. Expt. Location: NABISCO 1. 




Date : Jun-30-00 Crop 1 GLXMA 1 TRI 

Time of Day: 9:00 P.M. Height : 17.5 CM 

Method : C02 SPRAY 

Timing : 1-2 TRI Weed 1 CHEAL 3 LF 

Placement : FOLIAR 

Stg.Scale: 2.75 CM 


Density : 9.3 SQ/M 

% Humidity : 65 Weed 2 POLLA 3 LF 


Stg.Scale: 4 CM 


Density : 3 SQ/M 


Weed 3 AMBEL 4 LF 



Equipment : C02 SPRAY Density : 3.5 SQ/M 

Pressure : 241 kPa Weed 4 PANMI 3 LF 

Nozzle Type: FLAT FAN Stg.Scale: 9.75 CM 

Nozzle Size: 8002 VS Density : 20 SQ/M 






Propellant : C02 

Weed Code PANMI PANMI 


Part Rated 



Rating Date Aug-03-00 Aug-17-00 Aug-17-00 Sep-14-00 

Crop Stage 5 LEAF 9 LEAF 9 LEAF 10 LEAF 



Weed Density, Unit 11.3SQ.M 12.8SQ.M 




1 CHECK (WEEDY) 0 c 0 b 0 b 0 b 

2 GLYPHOSATE-TRANSORB 0.900 KG A/HA POST 1 0 c 0 b 100 a 100 a 

3 GLYPHOSATE-TRANSORB 0.900 KG A/HA POST 1 0 c 0 b 100 a 100 a 

GLYPHOSATE-TRANSORB 0.900 KG A/HA POST 2 

4 FLUAZIFOP-P-BUTYL 0.125 KG A/HA POST 1 2 ab 1 ab 100 a 100 a 

TURBOCHARGE 0.500 % V/V POST 1 

5 FLUAZIFOP-P-BUTYL 0.125 KG A/HA POST 1 2 abc 1 ab 100 a 100 a 


FLUAZIFOP-P-BUTYL 0.125 KG A/HA POST 2 


6 QUIZALOFOP-P-ETHYL 0.036 KG A/HA POST 1 0 c 1 ab 100 a 100 a 

CANPLUS 0.500 % V/V POST 1 

7 QUIZALOFOP-P-ETHYL 0.036 KG A/HA POST 1 3 a 0 b 100 a 100 a 


QUIZALOFOP-P-ETHYL 0.036 KG A/HA POST 2 


8 FENOXAPROP-P-ETHYL 0.054 KG A/HA POST 1 2 ab 1 ab 100 a 100 a 

9 FENOXAPROP-P-ETHYL 0.054 KG A/HA POST 1 1 bc 2 a 100 a 100 a 

FENOXAPROP-P-ETHYL 0.054 KG A/HA POST 2 

10 CLETHODIM 0.030 KG A/HA POST 1 0 c 0 b 100 a 100 a 

AMIGO 0.500 % V/V POST 1 

11 CLETHODIM 0.030 KG A/HA POST 1 1 bc 1 ab 100 a 100 a 


CLETHODIM 0.030 KG A/HA POST 2 


12 SETHOXYDIM 0.150 KG A/HA POST 1 0 c 0 b 100 a 100 a 

MERGE 1.000 L/HA POST 1 

13 SETHOXYDIM 0.150 KG A/HA POST 1 0 c 0 b 100 a 100 a 


SETHOXYDIM 0.150 KG A/HA POST 2 


LSD (P=.05) 1.8 1.4 0.0 0.0 


CV 165.45 255.8 0.0 0.0 


There was no injury in Roundup Ready soybeans with the postemergence herbicides evaluated. A single application of glyphosate, fluazifop-p-butyl, quizalofop-p-ethyl, 

fenoxaprop-p-ethyl, clethodim, and sethoxydim provided excellent full season control of PANMI. Consequently there was no benefit from the sequential applications. 

202

PROSO MILLET CONTROL IN ROUNDUP READY SOYBEANS WITH POSTEMERGENCE HERBICIDES II 

PETER SIKKEMA, KATHARINE SAUNDERS 


CROP: GLXMA, SOYBEAN (ROUNDUP READY). Planted: Jun-05-00, 70000 SEEDS/HA, 5 CM Deep, 75 CM Row Width. 


FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 10 M. Expt. Location: NABISCO 2. 




Date : Jun-30-00 Crop 1 GLXMA 2 TRI 

Time of Day: 10:00 P.M Height : 20.5 CM 

Method : C02 SPRAY 

Timing : 1-2 TRI Weed 1 CHEAL 3 LF 

Placement : FOLIAR 




% Humidity : 65 Weed 2 AMARE 2 LF 






Weed 3 PANMI 4 LF 



Equipment : C02 SPRAY Density : 136 SQ/M 



Nozzle Size: 8002 VS 






Propellant : C02 

Weed Code PANMI PANMI 




Rating Date Aug-03-00 Aug-17-00 Aug-17-00 Sep-14-00 

Crop Stage 6 LEAF 9 LEAF 9 LEAF 10 LEAF 



Weed Density, Unit 97.5SQ.M 98 SQ.M 




1 CHECK (WEEDY) 0 a 0 a 0 c 0 c 

2 GLYPHOSATE-TRANSORB 0.900 KG A/HA POST 1 0 a 0 a 100 a 100 a 

3 GLYPHOSATE-TRANSORB 0.900 KG A/HA POST 1 0 a 1 a 100 a 100 a 

GLYPHOSATE-TRANSORB 0.900 KG A/HA POST 2 

4 FLUAZIFOP-P-BUTYL 0.125 KG A/HA POST 1 1 a 1 a 99 ab 100 a 


5 FLUAZIFOP-P-BUTYL 0.125 KG A/HA POST 1 0 a 0 a 100 a 100 a 


FLUAZIFOP-P-BUTYL 0.125 KG A/HA POST 2 


6 QUIZALOFOP-P-ETHYL 0.036 KG A/HA POST 1 0 a 0 a 100 a 100 a 


7 QUIZALOFOP-P-ETHYL 0.036 KG A/HA POST 1 0 a 0 a 100 a 100 a 


QUIZALOFOP-P-ETHYL 0.036 KG A/HA POST 2 


8 FENOXAPROP-P-ETHYL 0.054 KG A/HA POST 1 0 a 1 a 100 a 100 a 

9 FENOXAPROP-P-ETHYL 0.054 KG A/HA POST 1 0 a 0 a 98 b 98 b 

FENOXAPROP-P-ETHYL 0.054 KG A/HA POST 2 

10 CLETHODIM 0.030 KG A/HA POST 1 1 a 1 a 100 a 100 a 


11 CLETHODIM 0.030 KG A/HA POST 1 1 a 1 a 100 a 100 a 


CLETHODIM 0.030 KG A/HA POST 2 


12 SETHOXYDIM 0.150 KG A/HA POST 1 1 a 2 a 100 a 100 a 


13 SETHOXYDIM 0.150 KG A/HA POST 1 1 a 0 a 100 a 100 a 


SETHOXYDIM 0.150 KG A/HA POST 2 


LSD (P=.05) 1.3 1.5 2.0 1.4 


CV 318.89 268.19 1.54 1.05 


There was no commercially significant injury in Roundup Ready soybeans with the postemergence herbicides evaluated. A single application of glyphosate, fluazifop-p-butyl, 

quizalofop-p-ethyl, fenoxaprop-p-ethyl, clethodim, and sethoxydim provided excellent full season control of PANMI. Consequently there was no benefit from the sequential 

applications. 

203

Problem Weeds in Soybeans

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?