- General - over entire field
| Possible cause | Probability (Entire field) | |
|---|---|---|
 |
Insects | Rare |
| Nutrition | Possible e.g., general deficiency | |
| Management | Possible e.g., application skip | |
| Environment | Possible e.g., Heat | |
| Water | Possible e.g., Stress | |
| Disease | Unlikely | |
| Pests | Rare |
- Along field edge
| Possible cause | Probability (Along field edge) | |
|---|---|---|
 |
Insects | Unlikely |
| Nutrition | Possible e.g., deficient field | |
| Management | Possible e.g., application skip | |
| Environment | Unlikely | |
| Water | Unlikely | |
| Disease | Unlikely | |
| Pests | Possible e.g., bird damage |
- Random Across Field
| Possible cause | Probability (Random plants) | |
|---|---|---|
 |
Insects | Possible |
| Nutrition | Unlikely | |
| Management | Possible e.g., mixed seed | |
| Environment | Unlikely | |
| Water | Unlikely | |
| Disease | Possible | |
| Pests | Possible e.g., bird damage |
- Scattered Clusters
| Possible cause | Probability (Scattered clusters) | |
|---|---|---|
 |
Insects | Common |
| Nutrition | Common e.g., N deficiency | |
| Management |
Common e.g., N misapplication | |
| Environment | Rare | |
| Water | Possible | |
| Disease | Possible | |
| Pests |
Possible e.g., bird damage |
- Strips Across Field
| Possible cause | Probability (Strips across field) | |
|---|---|---|
 |
Insects | No |
| Nutrition | Possible e.g., N strip applied | |
| Management | Possible e.g., line application | |
| Environment | Unlikely | |
| Water | Unlikely | |
| Disease | No | |
| Pests | Unlikely |