|
|
|
|
Seedling |
Whorl to boot |
Head emergence to soft dough |
| Grasshoppers |
5-8 per sq. yd. |
|
|
| Greenbug aphid |
10-40 per plant |
50-100 per plant |
500 per plant |
| Cornleaf aphid |
|
1000 per plant and plant dying |
|
| European corn borer |
|
50% infested plants |
50% infested plants |
| Fall armyworm |
|
80% plants infested with 1 worm
50% plants infested with 2 or more |
2 per head |
| Corn earworm |
|
|
2 per head |
| Sorghum midge |
|
|
1 per head |
| Sorghum webworm |
|
|
3 per head |
|
|
