Insect Pest Management in Virginia Cotton, Peanut, and Soybean

More documents

Recommendations

Info

Table 64. Mean number of larvae per 3-ft beat cloth sample and percent control 1 , PT11-CEW-2 (Mike Grizzard farm, Southampton Co., VA). Tidewater AREC, Suffolk, VA, 2011. Insecticide treatments were applied on August 16. Aug 18 2 Aug 22 # Material Rate Small larvae Medium larvae Large larvae Total larvae Small larvae Medium larvae Large larvae Total larvae % control 1 Prevathon 0.43SC 9.8 oz/A 2.75 4.00 2.50 a-d 9.25 ab 0.00 b 1.00 b 0.00 b 1.00 b 53.4 2 Prevathon 0.43SC 13.4 oz/A 2.00 1.75 3.25 ab 7.00 bc 0.25 b 0.25 b 0.00 b 0.50 b 65.9 3 Coragen 1.67SC 5 oz/A 0.75 4.25 1.00 d 6.00 bc 0.00 b 0.00 b 0.25 b 0.25 b 71.6 4 Prevathon 0.43SC + Asana XL 4.15 oz/A 4.75 oz/A 0.75 2.25 1.25 cd 4.25 c 0.00 b 0.00 b 0.25 b 0.25 b 79.5 5 Belt 4SC 2 oz/A 2.00 3.75 3.00 a-c 8.75 bc 0.25 b 1.00 b 0.00 b 1.25 b 54.5 6 Steward 1.25EC 4.6 oz/A 1.75 2.75 3.00 a-c 7.50 bc 0.25 b 0.25 b 1.00 b 1.50 b 59.1 7 Exirel 10SE + MSO 8 Exirel 10SE + MSO 13.57 oz/A 0.25% v/v 20.67 oz/A 0.25% v/v 1.25 3.75 1.50 b-d 6.50 bc 0.25 b 0.75 b 0.00 b 1.00 b 65.9 1.25 3.25 1.25 cd 5.75 bc 0.00 b 0.50 b 0.00 b 0.50 b 71.6 9 Untreated 2.00 7.50 4.00 a 13.50 a 2.25 a 2.75 a 3.50 a 8.50 a --- LSD NS NS 1.76 4.67 0.68 1.28 1.66 2.17 --- Means within a column followed by the same letter(s) are not significantly different (Protected LSD, P=0.05). 1 Percent control is based on cumulative larval days (CLD) in the treatment relative to the untreated control. CLD’s are calculated with the following equation: Σ (X i+1 – X i )[(Y i + Y i+1 )/2], where X i and X i+1 are adjacent sample dates and Y i and Y i+1 are corresponding points of total larvae per 3-ft beat cloth sample. There were 44.0 CLD’s in the untreated control. 2 Larval numbers were multiplied by 2 in the untreated control on August 18.
Test: PT11-CEW-3, Evaluation of foliar treatments for lepidopteran pest management in peanut # Material Rate/A Date(s) treated 1 DiPel ES (Kur.) 1 pt Aug 16 2 Karate Z 1.28 oz Aug 16 3 Karate Z 1.92 oz Aug 16 4 DiPel ES (Kur.) 1 pt Aug 16 + Karate Z 1.28 oz 5 DiPel ES (Kur.) 1 pt Aug 16 + Karate Z 1.92 oz 6 Baythroid XL 2.4 oz Aug 16 7 Brigade 2EC 5.12 oz Aug 16 8 Untreated Test: PT11-CEW3 Year: 2011 Crop: Peanut Variety: NC V11 Field: n/a Location: Mike Grizzard farm, Southampton Co., VA Experimental design: RCBD Plot size: 2 rows x 40’ Row spacing: 36” Planting date: May 8 Dig date: n/a Harvest date: n/a Row feet harvested: n/a 126
Page 1 and 2:
2011 Insect Pest Management in Virg
Page 3 and 4:
ACKNOWLEDGMENTS The authors wish to
Page 5 and 6:
INDEPENDENT CROP CONSULTANTS Chad H
Page 7 and 8:
Contents Acknowledgments ..........
Page 9 and 10:
Climatological Summary of the 2011
Page 11 and 12:
Table 2. Daily precipitation (inche
Page 13 and 14:
Table 3. Soil types, nutrient analy
Page 15 and 16:
Test: CT11-THP-Regional-Irrigated,
Page 17 and 18:
Table 4. Thrips injury ratings 1 ,
Page 19 and 20:
Table 6. Plant height 1 , number of
Page 21 and 22:
Test: CT11-THP-Regional-Dryland, Ef
Page 23 and 24:
Page 25 and 26:
Table 10. Plant height 1 , number o
Page 27 and 28:
Test: CT11-THP-Regional-Foliar, Eff
Page 29 and 30:
Page 31 and 32:
Table 14. Plant height 1 , number o
Page 33 and 34:
Test: CT11-THP-Regional-Eastern, Va
Page 35 and 36:
Table 16. Thrips injury ratings and
Page 37 and 38:
Test: CT11-THP-Bayer, Evaluation of
Page 39 and 40:
Table 19. Thrips injury ratings and
Page 41 and 42:
Test: CT11-THP-Dow, Efficacy of fol
Page 43 and 44:
Table 21. Stand counts, thrips inju
Page 45 and 46:
Test: CT11-THP-PHY, Test to evaluat
Page 47 and 48:
Table 23. Stand counts, thrips inju
Page 49 and 50:
Table 24. Stand counts, number of n
Page 51 and 52:
Table 26. Mean number of thrips per
Page 53 and 54:
Treatment application(s): Liquid in
Page 55 and 56:
Table 28. Mean number of thrips per
Page 57 and 58:
Table 29. Stand counts, plant heigh
Page 59 and 60:
Treatment application(s): Broadcast
Page 61 and 62:
Treatment means (% bollworm damage,
Page 63 and 64:
Table 31. Percent external bollworm
Page 65 and 66:
Page 67 and 68:
Test: CT11-BW4, Efficacy of selecte
Page 69 and 70:
Page 71 and 72:
Lint 2 Table 35. Percent external b
Page 73 and 74:
Page 75 and 76: Table 37. Percent external bollworm
Page 77 and 78: Treatment application(s): Broadcast
Page 79 and 80: Test: CT11-SBUG-Valent, Evaluation
Page 81 and 82: Table 39. Percent internal boll dam
Page 87 and 88: Test: PT11-THP-1, Evaluation of in-
Page 89 and 90: Table 42. Stand counts, PT11-THP-1.
Page 91 and 92: Table 44. Mean number of thrips per
Page 93 and 94: Test: PT11-THP-2, Evaluation of liq
Page 95 and 96: Table 46. Stand counts and yield, P
Page 99 and 100: Treatment application(s): Liquid in
Page 101 and 102: Table 50. Thrips injury ratings 1 ,
Page 103 and 104: Treatment application(s): Broadcast
Page 105 and 106: Table 52. Thrips injury ratings 1 ,
Page 107 and 108: Test: PT11-THP-Syngenta-1, Evaluati
Page 109 and 110: Table 54. Stand counts and thrips i
Page 111 and 112: Table 56. Tomato spotted wilt virus
Page 113 and 114: Treatment application(s): Granular
Page 117 and 118: Test: PT11-THP-VA Lines, Evaluation
Page 119 and 120: Table 61. Thrips injury ratings and
Page 121 and 122: Table 62. Stand counts on May 19 an
Page 123 and 124: Table 63. Mean number of larvae per
Page 125: Treatment application(s): Full cove
Page 131 and 132: Table 66. Southern corn rootworm me
Page 133 and 134: Test: SB11-SEED-1, Evaluation of se
Page 135 and 136: Table 68. Thrips injury ratings 1 a
Page 137 and 138: Table 69. Stand counts, thrips coun
Page 139 and 140: Test: SB11-BMSB-1, Efficacy of foli
Page 141 and 142: Table 71 (continued). Mean number o
Page 143 and 144: Table 72. Mean number of brown marm
Page 145 and 146: Table 73. Mean number of brown marm
Page 153 and 154: Table 77. Mean number of insects pe
Page 155 and 156: Table 79. Results of the 2011 Virgi
Page 157 and 158: Figure 1. Corn earworm regression.
show all

Insect Pest Management in Virginia Cotton, Peanut, and Soybean

Create successful ePaper yourself

Delete template?

Save as template?