Iowa State University
BT Versus Non BT Corn Yields
| BT Isoline | BT Advantage | Variety | Bushels/Acre | Variety | Bushels/Acre |
| GH2390BT | 13.684 | GH2390(2390) | 196.5877 | GH2390 | 182.9 |
| No BT Isoline Planted | DK525BT(525) | 208.6564 | DK4815 | 173.91 | |
| GH08350BT | 12.876 | GH08350(8250) | 191.5037 | GH8250 | 178.63 |
| DK533-2BT | 23.538 | DK533-2(537) | 206.2215 | DK537 | 182.88 |
| NK4640BT | -1.377 | NK4640(4640) | 168.9064 | NK4640 | 170.28 |
| P36R11BT | -0.03 | P36R11(36R10) | 175.422 | PNR36R10 | 175.45 |
| GH8067BT | 13.596 | GH8067(2398) | 175.3356 | GH2398 | 161.74 |
| NK4529BT | 7.693 | NK4529(45T5) | 182.0546 | NK45T5 | 174.36 |
| P34B24BT | -10.12 | P34B24(34B23) | 179.7447 | P34B23 | 189.86 |
| No BT Isoline Planted | N58D1(?) | 196.1742 | NK59Q9 | 188.23 | |
| P36B09BT | 1.1969 | P36B09(36B08) | 181.192 | P36B08 | 180 |
| ASG508BT | 23.473 | ASG508(508) | 193.8301 | ASG508 | 170.36 |
| P34R07BT | 19.226 | P34R07(3489) | 195.8607 | PNRR3489 | 176.63 |
Winn Coop Area Corn Plot Yield Results
Winn Coop Area Soybean Plot Yield Results
Clayton County Corn Growers Corn Test Plot
Winneshiek County Corn Growers Corn Test Plot
Clayton County Corn Growers Soybean Test Plot