| armyworm |
Mythimna unipuncta |
1 |
| armyworms |
Spodoptera spp. |
1 |
| Barley Yellow Dwarf Virus |
Luteovirus BYDV |
1 |
| bollworm |
Helicoverpa zea |
1 |
| building |
|
1 |
| chemicals |
|
1 |
| cold injury (low temperature) |
|
3 |
| common smut |
Ustilago maydis |
1 |
| common wheat |
Triticum aestivum |
4 |
| corn |
Zea mays |
12 |
| drought |
|
1 |
| frost and winter injury (general) |
|
3 |
| Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
1 |
| hail |
|
3 |
| head smut |
Sphacelotheca reiliana |
2 |
| heat |
|
1 |
| Hessian fly |
Mayetiola destructor |
1 |
| irrigation |
|
2 |
| lady beetle |
|
1 |
| northern corn rootworm |
Diabrotica barberi |
1 |
| nutrient deficiency |
|
6 |
| spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
2 |
| storm damage (general) |
|
1 |
| western corn rootworm |
Diabrotica virgifera virgifera |
3 |
| wheat stem rust |
Puccinia graminis |
1 |
| Wheat Streak Mosaic Virus |
Tritimovirus WSMV |
1 |