We continue to receive reports of grasshoppers in field borders moving into crop fields in parts of Nebraska. Grasshoppers will move into crop fields especially if summer rainfall has not kept border areas well watered. Use the following table to assess the likelihood that control with insecticides will be profitable.
See an earlier CropWatch article, Scout Field Borders for Grasshoppers, for more complete information.
| Grasshopper Population Within Fields | Field Borders | Treatment Necessary? | undefined |
|---|---|---|---|
| Non-economic | 0-2 | 5-10 | No |
| Light | 3-7 | 11-20 | Uncertain — depends on size, species, type of crop |
| Moderate | 8-14 | 20-40 | Probably |
| Abundant | 15 or more | 41 or more | Yes |
