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Performance of <strong>Corn</strong> Silage Hybrid Types<br />
<strong>Wisconsin</strong> Forage Symposium<br />
January 27-28, 2004<br />
Eau Claire, WI<br />
Joe Lauer<br />
University of <strong>Wisconsin</strong><br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Overview<br />
• What do we want in corn silage hybrids<br />
• What are the available corn hybrid types<br />
• How have these types performed<br />
• How should you approach hybrid selection<br />
decisions<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Yield and Digestibility of <strong>Corn</strong> Plant Parts<br />
Tissue Percent Yield Digestibility (%)<br />
Leaf blades 11 73<br />
Leaf sheaths 4 63<br />
Stalk+tassel 19 60<br />
Cob+husk+shank 22 72<br />
Kernels 44 94<br />
Whole plant 100 71<br />
Adapted from Deinum and Struik, 1989<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Desirable Forage Characteristics<br />
ti<br />
• What makes a good forage (Carter et al., 1991)<br />
High yield<br />
High energy (high digestibility)<br />
High intake potential (low fiber)<br />
High protein<br />
Proper moisture at harvest for storage<br />
• Ultimate test is animal performance<br />
Milk2000 is our best predictor for performance (Schwab<br />
- Shaver equation)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
What Do We Want in Grain versus Forage<br />
Hybrids<br />
Trait Grain Forage<br />
Grain yield High Adequate<br />
Forage yield Adequate High<br />
Hybrid range 60 bu/A 8,000 lb Milk/A<br />
Stalks Standability Digestibility<br />
Leaves Unknown Digestibility<br />
Kernel hardness Hard Soft<br />
Plant drydown “Stay-green” Synchronous<br />
Plant maturity “Full-season” 5-10 d longer<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
<strong>Corn</strong> Hybrid Types<br />
• Normal<br />
• D f<br />
• Bmr<br />
• Leafy<br />
• High protein<br />
• High oil<br />
• Waxy<br />
• Transgenic<br />
Bt<br />
RR<br />
Bt,LL<br />
Bt,RR<br />
• Dwarf corn<br />
• “Sugar” corn<br />
• Profusely-tillering<br />
• Autotetraploid<br />
• Teosinte<br />
• Sweet corn<br />
• Pop corn<br />
Questionable value due to<br />
lower yield and poorer<br />
agronomics.<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
University of <strong>Wisconsin</strong><br />
<strong>Corn</strong> <strong>Agronomy</strong> Program<br />
Spooner<br />
Rhinelander<br />
Chippewa Falls<br />
Marshfield<br />
Galesville<br />
Valders<br />
Lancaster<br />
Fond du Lac<br />
Arlington
Number of hybrids tested in the UW <strong>Corn</strong><br />
Silage Performance Trials<br />
Number of hybrids<br />
Hybrids 1-yr 2-yr 3-yr 4-yr 5-yr<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
1994 1996 1998 2000 2002 2004<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
2002 <strong>Wisconsin</strong> <strong>Corn</strong> Hybrid Performance Trial Results<br />
Table 13. South Central Zone - Early Maturity Silage Trial.<br />
100 DAY RELATIVE MATURITY OR EARLIER, BASED ON COMPANY<br />
RATING (FOND DU LAC = FON, GALESVILLE = GAL)<br />
2002 2001<br />
AVERAGE AVERAGE 2 Year<br />
Kernel FON GAL FON GAL Average<br />
Yield MILK PER Moist Milk CP ADF NDF IVD NDFD Starch Yield Yield Yield MILK PER Yield Yield Yield<br />
BRAND HYBRID T/A TON ACRE % % % % % % % % T/A T/A T/A TON ACRE T/A T/A T/A<br />
Dekalb DKC4446 8.8 3380 30000 48.1 20 6.6 25 49 82 63 37 7.5 10.2 *<br />
Golden Harvest H2387 8.9 3440 30900 * 54.7 20 7.5 23 46 82 62 37 7.3 10.5 *<br />
Dairyland HiDF3300 8.9 3440 30800 * 55.7 20 7.2 24 46 83 62 37 8.0 9.8 *<br />
Golden Harvest H6775Bt 8.8 3350 29800 57.0 20 7.2 25 47 81 60 35 7.5 10.1 *<br />
100-DAY HYBRID TRIAL AVERAGE## 58.7<br />
Growmark FS4042Bt 9.7 * 3400 33100 * 58.9 30 7.0 25 47 82 61 37 9.3 * 10.2 *<br />
La Crosse Forage LC7415 8.8 3380 29900 59.2 40 7.6 25 47 81 60 35 8.3 9.3 8.1 2870 * 23400 7.7 8.5 8.5<br />
Garst 8779 9.2 3430 31600 * 59.3 30 6.9 25 47 82 61 36 8.3 10.0 * 9.0 2770 24900 7.7 10.2 9.1<br />
Battleground 3195 78 7.8 3370 26500 59.4 30 73 7.3 25 48 81 61 34 71 7.1 86 8.6<br />
LG Seeds LG2488 8.6 3320 28700 61.5 30 7.4 26 50 80 60 32 7.8 9.4<br />
Dekalb DKC5073 8.7 3340 29000 62.0 40 7.1 25 47 81 59 35 8.5 8.9<br />
NK Brand N48V8 10.7 * 3380 36100 * 63.2 40 7.1 28 52 80 62 27 10.2 * 11.1 * 10.6 * 2720 29000 * 9.7 * 11.6 * 10.7 *<br />
Battleground 3203 8.9 3330 29700 63.9 50 7.4 27 50 80 60 32 8.9 8.9<br />
MEAN 9.0 3380 30500 58.6 30 7.2 25 48 81 61 34 8.2 9.8 8.9 2720 24100 8.0 9.7 9.4<br />
LSD(0.10)** 1.2 NS 5800 5.2 10 0.5 3 5 2 2 5 1.0 1.4 0.7 130 2700 1.0 1.1 0.6<br />
## Average whole plant moisture of all hybrids in the trial as rated by the Minnesota Relative Maturity Rating System. Ratings are rounded to 5 day increments.<br />
* Hybrids that performed statistically similar to the highest hybrid in the trial.<br />
Shaded results provide the best estimate of relative hybrid performance.<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Performance Indices<br />
Milk per Ton and Milk per Acre<br />
• Milk per ton: The amount of milk production from<br />
one ton of silage using the quality measures of<br />
crude protein, NDF, invitro true digestibility,<br />
NDFD, and starch content.<br />
Estimate is based on a standard cow body weight of<br />
1350 pounds<br />
Milk production level of 90 pounds milk per day at 3.8<br />
percent fat.<br />
Adjusted for maturity<br />
• Milk per acre = Milk per ton X Dry matter yield per<br />
acre<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Hybrids Tested in<br />
the UW Silage Trials (1995-2003).<br />
Each value is a GxE mean (n= 3263)<br />
34000<br />
Overall Average<br />
All hybrids (n=3263)<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Annual Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Bmr Types<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
Bmr (n=51)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Leafy Types<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
Leafy (n=110)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> “Nutri-Dense”<br />
Types Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
ND (n=22)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> High Oil Types<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
High oil (n=12)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Waxy Types<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
Waxy (n=48)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Bt Types<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
Bt (n=407)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Roundup Ready<br />
Types Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
RR (n=63)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Bt,RR (Stacked)<br />
Types Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
Bt,RR (n=114)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Bt,LL (Stacked)<br />
Types Tested in the UW Silage Trials (1995-2003).<br />
34000<br />
Bt,LL (n=110)<br />
Annual Average<br />
32000<br />
Oval = + Standard error<br />
of the mean (95% C.L.)<br />
Overall Average<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Hybrids<br />
Tested in the UW Silage Trials (1995-2003).<br />
Milk pe er Acre (l lb/A)<br />
34000 Normal (n=2188)<br />
Leafy (n=110)<br />
of the mean (95% C.L.)<br />
Waxy (n=48)<br />
32000<br />
30000<br />
26000<br />
Oval = + Standard error<br />
High oil (n=12)<br />
Nutri-Dense (n=22)<br />
Bt (n=407)<br />
RR (n=63)<br />
28000 Bt,LL (n=110)<br />
Bt,RR (n=114)<br />
Bmr (n=51)<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of one <strong>Corn</strong> Hybrid<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000 Oval = + Standard error<br />
of the mean (95% C.L.)<br />
32000<br />
Carhart’s Blue Top CX1195A<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
GxE (n=16)<br />
Annual Average<br />
Overall Average<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of one <strong>Corn</strong> Hybrid<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000 Oval = + Standard error<br />
of the mean (95% C.L.)<br />
32000<br />
Carhart’s Blue Top CX1080A<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
GxE (n=28)<br />
Annual Average<br />
Overall Average<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of one <strong>Corn</strong> Hybrid<br />
Tested in the UW Silage Trials (1995-2003).<br />
34000 Oval = + Standard error<br />
of the mean (95% C.L.)<br />
32000<br />
Pioneer 34M95<br />
Milk pe er Acre (l lb/A)<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
GxE (n=10)<br />
Annual Average<br />
Overall Average<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relative Performance of <strong>Corn</strong> Hybrids Tested in<br />
the UW Silage Trials (1995-2003).<br />
Each value is a hybrid mean (n= 854 hybrids)<br />
34000 Oval = + Standard error<br />
of the mean (95% C.L.)<br />
32000<br />
er Acre (lb/A)<br />
Milk p<br />
30000<br />
28000<br />
26000<br />
24000<br />
22000<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Relationship between milk per acre and milk per ton of corn hybrids in <strong>Wisconsin</strong> (n=854, 1995-2003).<br />
34000<br />
High<br />
yield<br />
High yield<br />
and quality<br />
Milk per<br />
Acre (lb/A A)<br />
AP9280<br />
W7090<br />
DK618 33A14<br />
34M95<br />
32000<br />
8579RR<br />
TMF113(H)<br />
RK835<br />
DKC4626<br />
LG2561<br />
DK611 37M34 PG1455 EXP110 OB1113Bt H9247Bt<br />
6208FQ<br />
C597YG<br />
LGX49800 34R07 G7622B 38A25<br />
K4807<br />
FS5458 N48V8TR1066<br />
C590YG 34M93 LC7345 8523IT<br />
35Y67 K3904<br />
W54935R58<br />
N6223<br />
RK556 8530Bt<br />
30000<br />
4680wx 35R60 33J57<br />
LG2528 36K27 35R57<br />
K8108LF C408YGHT7415<br />
36R11 36B08 DKC4815<br />
W5460 36N71 MX128 6068Bt 38T28<br />
FS6533Bt C707RRYG N65Y3 34B23 EXEL DK35236F30<br />
DK604 DK477 37R71 HiDF4200<br />
294Bt<br />
DK527<br />
T-H305 K8110LF HL5067 7698Rb G7716B<br />
35D45 7796Rb<br />
HLS067<br />
5481FQ TH305 B2098 SL32 FS1280<br />
FS4322<br />
N5220H2382<br />
DK591 N3030 N59Q9<br />
DK417<br />
DK442<br />
S5474<br />
37M81 N4424<br />
TMF113<br />
TR987 RK552 RK691 H9230Bt LG2367 37J99DK567<br />
RK546<br />
EX900 53090-1-3 6511FQ H2477H2387 BH4531 x<br />
RK617 Stealth TFsx2182<br />
DK412 DK343 1401410<br />
Stealth<br />
H2309 LH1 36H36<br />
9883L H6355<br />
DKC4442(YGCB)<br />
W6570 GS961 RK896<br />
N67T4<br />
TE8785 RK488YGCB<br />
FS6432 CR1857RB<br />
RX708YG HC540 PG001 DKC5878(YGCB)<br />
Stealth N6423<br />
DST10212<br />
TMF108 W3631595<br />
6895YGCB 36D14 34G82<br />
CX1080A K7609 K6209 FS4535 RK812 Stealth SL65 CX100A 1412<br />
Stealth FS1432<br />
Stealth<br />
1280<br />
RK708 H2279<br />
8541IT<br />
TFsx2179 1507 5060Bt K7001Bt R1465<br />
TMF114<br />
HL5034 A6391 N51Z7<br />
N65M7<br />
33B51<br />
FS4042Bt RFS610 7558G DKC4446(RRYGCB)<br />
RFS602 RH0027 DKC5018(YGCB)<br />
K2525Bt JC7<br />
RK232 DK569<br />
EX934 CX18A<br />
35N05 HC350 CX130AA<br />
RX601RRYG<br />
HL2505 X0012 CX51Bt<br />
37D03 C430YG JC11 HLS041<br />
HLS072<br />
8510YG1RR<br />
DKC5824(RRYGCB) K2501<br />
G7380 1406 LG2316<br />
34G81 TMF100 36H75 CX82<br />
RK775 SL45 1198SL68<br />
TMF106(H)<br />
N31P8<br />
LGX52001 X893LF USC1051ND 34W67<br />
K4907 TMF100(H)<br />
28000 CX1190A H2274<br />
3303FQ<br />
Stealth<br />
646Y E1128 RK445 LG2410 8590IT N29F1H8250<br />
Stealth 1407 4M60ND<br />
DK471<br />
TFsx1195A H2497<br />
RK778 TFsx2199 FS3858 CX1200A<br />
Stealth 3711FQ<br />
CR102RB K79A 1203 1195<br />
Stealth RK553 1183 SL54<br />
CX290A C545<br />
1508<br />
TMF94 H6675<br />
HC6762nE<br />
N64J9 RK648 RX637<br />
35P12 36R10<br />
X100LStealth A6382 N45T5 JC2<br />
N33H6 LG2474 CR8500RB<br />
56K44 H8662BtH7900 DKC6019(RRYGCB)<br />
NX4942<br />
CX1020Bt S6408Bt GS1061<br />
CX1956Bt<br />
37F16<br />
N17R3 LG2526SP A6257 36B09 S2055RR<br />
N70D5<br />
K6901 N2555BT<br />
DK405 FS3969<br />
CX1185A<br />
AP9572<br />
1606 FS3621<br />
W742 W4920<br />
34F80<br />
FS2140<br />
TMF94RK806<br />
HT4404<br />
RK668 W5018Bt X890LF RK837 RK645RRBt H9229 X682ND<br />
1400<br />
W552<br />
Stealth K6104 Stealth MAX101 C507<br />
DK385 1408 Stealth 1205 PG1301 Stealth 1297<br />
3757E<br />
RK133 6855VP N52B2 K4508 CX8500A 1495<br />
7301FQ<br />
N3030BT H8562 RK648Bt Stealth 1298Bt<br />
Stealth<br />
TE8783<br />
RK383 W3160 6406Y<br />
DK607RR<br />
6481FQ<br />
38P06 RK659 T-H301<br />
H6775Bt FS3091 24X<br />
CX3100A GS998<br />
1500<br />
AP9565<br />
4021Bt<br />
GS1117 1611<br />
EX97415Bt<br />
N45A6<br />
A6445<br />
W7303Bt LGX54700<br />
RX664 DKC5334(RRYGCB) DG5440<br />
RX730RRYG C635<br />
DKC6411(RRYGCB)<br />
LFT61 G7221B H7287 FS4481 3M36RR<br />
3681FQ RK232YGCB<br />
RK772YGCB A6333Bt DKC4992<br />
LGX41410<br />
GS1049<br />
38T276210RRBt<br />
TFsX2178<br />
CX1055A<br />
LG2585<br />
DKC6009(RRYGCB)<br />
RK840 RK896Bt HC560 K2727Bt DKC3948(RRYGCB)<br />
8959YG1<br />
RFS697<br />
RFS690<br />
HLS058 RK636YGCB<br />
H7140Bt 7807Bt<br />
LG2415 MX027 DKC4295(RRYGCB)<br />
JC12<br />
7625RRBt HY9646 CX1195A G7010<br />
H7620Bt AP9230 Stealth K8112LF<br />
Stealth H2343 39A26<br />
9102<br />
FS1795 1289<br />
Stealth FS2492 1294<br />
K3809 Stealth Stealth 1193 LG2499 CX105A RK864 RX490<br />
C518 K7122Bt W4055 RX452YG<br />
GS1099<br />
4911B TF3199 H7895<br />
C521W677 G7711<br />
USC1119ND<br />
G7494B LFT60<br />
C644RR RX738RR<br />
HLS034 DKC5073(RRYGCB)<br />
37H26<br />
LFT50<br />
Stealth RK636<br />
1510<br />
RK569 RK641<br />
HDS95<br />
Stealth CX184A TFsx2196 1501 AP9272 TFsX2111 MG6770 K8098LF<br />
38K07<br />
3520B LG2488<br />
LFT31 2192B 34G13 C336X<br />
N4342wx 1405 K5109<br />
H2233 9291WX D5954 RX601<br />
HDS90 DK365RK376<br />
RK696 RK810 H2547 N1699<br />
Stealth SL20<br />
26000 N1404<br />
1496 AP9300<br />
TFsx2189TFsx2103<br />
B2495Stealth DK512WX RK671<br />
TMF94(H) W700 W4828 RX508<br />
FS2131 Pilgrim<br />
BH4602 N58D1<br />
W1970 LC7383<br />
4001VP 562IMI<br />
EX8661Bt G6956RK606<br />
38K06 W427<br />
Stealth FS1212 N48K2<br />
RK277 CX130A<br />
2404X 1296<br />
DK449<br />
N1718 H2315<br />
D5911 TR1088 TMF106 Stealth<br />
K6106 1499Stealth 1493<br />
RK386 X888LF<br />
X671ND DK307<br />
DKC3945<br />
JC4 RK394K8105LFRR<br />
7644Bt LG2402Bt 2288Bt<br />
DKC4222 Stealth<br />
DKC5852<br />
H8350Bt PlusOBX1064RRBt<br />
5740VPwx DS107RR<br />
W2830<br />
8464IT HiDF3300 1287RR LG2518<br />
DST9209<br />
RK622 RX592RR JC1 HL5041<br />
G7366<br />
X2101 HiDF3600DKC5188<br />
CX1056A FS1952 C605YG<br />
RK845RRYGCB W7180<br />
54K90DKC3551(RRYGCB)<br />
FS4882 7511FQ K8104LF<br />
35Y55<br />
51N39 LC4531 C588YG MAX454 XA4112 RK543 1275 K5959Bt 34T14<br />
CX9500AA K4709 EXP75 2411FQ<br />
Stealth SL27<br />
FS1324<br />
FS5308 N27M3<br />
RX430348WX5101WX<br />
CX50A T-H295 A6365<br />
RK366<br />
2900wx W5555 EX600<br />
1200<br />
RK714<br />
FS2091<br />
K4809 CX1187A 38W36 5241VP 6341VPwx<br />
LGX39700 CR85RR<br />
H9285Bt<br />
HL2507 DKC5740 JC3<br />
H7108 RX499YG<br />
JC14 N29A2<br />
38P05Qcomp K8084LF<br />
c1 DST10723 x LH11<br />
DKC2995<br />
N43C4 LC7415<br />
GS929<br />
DG5288LFY 8342GLSIT<br />
H6648Bt W4570 JC8<br />
PG1475 N9943<br />
4630Bt<br />
CX99A DK325<br />
7055VP DST10427 W5540 K8094LF<br />
RX508YG<br />
NX3018<br />
Stealth 1607<br />
K88GUSC1072ND<br />
W282 RK358<br />
RK272 USC1099ND TFsx3199 Stealth FS4720 CXP1500<br />
1402<br />
K5788RR RK685 2835RR 8557RRK2975<br />
PG002<br />
X94L<br />
TMF2450 H2790<br />
CX9510RR<br />
7748Bt LG2479Bt<br />
DKC6017<br />
FS1660<br />
DKC5671<br />
24000<br />
T-H289 DST10408G6970<br />
9299WX<br />
LG2227RK768<br />
RK192 JC9 SF100 N33G2<br />
K7101 DKC2675<br />
LC7512 LC7333<br />
LGX42900<br />
HDS112 FS2096<br />
EXP95<br />
RK225<br />
DKC5332 LG2540<br />
39W54 EXP-S2 PG1586<br />
EXP-S3<br />
N33V5<br />
CX1080Bt DKC3947(RR)<br />
HL2240<br />
F657<br />
HDS105<br />
CX8900A JC13<br />
39K73 CX287 W4457 H2226 6990ND S5100<br />
K2468<br />
4144VPHX2085<br />
SS505B<br />
Stealth 1416<br />
TR758<br />
22000<br />
HX1114<br />
H8123 DST10419 39T68<br />
JC10<br />
LC7374<br />
5288VPwxS4970<br />
EXP-S1RK672<br />
CX125A BH611 QCXB73F407<br />
8541WX<br />
TE7565<br />
DKC4628(RR)<br />
BH611A<br />
F377<br />
20000<br />
3000 3200 3400 3600 3800 4000<br />
Milk per Ton (lb/T)<br />
F697<br />
High<br />
quality
Summary<br />
• Numerous methods for achieving i high h yield and high h<br />
quality corn silage<br />
Many ways to “skin the cat”<br />
Hybrid selection depends upon objectives of farmer<br />
Management and hybrid selection go hand-in-hand<br />
• Base hybrid selection decisions i on performance.<br />
Multi-location averages<br />
Consistency<br />
• Future direction<br />
Starch degradation<br />
Stover digestibility (digestion kinetics)<br />
Continued improvement of Milk2000<br />
Key: Animal feeding verification studies<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Using <strong>Wisconsin</strong> <strong>Corn</strong> Hybrid Performance<br />
Trial Results<br />
• Use multi-environment average data<br />
Begin with trials in zone(s) nearest you<br />
Compare hybrids with similar il maturities<br />
Use many years and locations<br />
• Evaluate consistency of performance<br />
Check performance in other zones and locations<br />
Check other reliable unbiased trials<br />
Be wary of inconsistent i t performance.<br />
• SELECT at http://corn.agronomy.wisc.edu<br />
• You are taking a tremendous gamble if basing your hybrid selection<br />
decisions on 1 or 2 local test plots<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
Criteria i for Selecting Silage Hybrids<br />
• Whole plant silage yield<br />
• Grain yield: allows flexibility (dual purpose)<br />
• Silage quality<br />
• Relative maturity: 5-10 days later than grain<br />
hybrids<br />
• Standability: allows flexibility<br />
• Pest resistance<br />
“Variation for silage yield and quality exists<br />
among commercial hybrids in <strong>Wisconsin</strong>.”<br />
Lauer, © 1994-2003<br />
University of <strong>Wisconsin</strong> – <strong>Agronomy</strong>
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