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IPM Crop Survey for North Dakota |
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| Lawn,
Garden, Flowers Trees/Shrubs |
Business, Community, Leadership |
Family, Home, Youth, 4-H |
Food, Nutrition, Food Safety |
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|
IPM Crop Survey for North Dakota |
|||||
| Lawn,
Garden, Flowers Trees/Shrubs |
Business, Community, Leadership |
Family, Home, Youth, 4-H |
Food, Nutrition, Food Safety |
Search this Site |
||
[ Wheat
| Barley | Sunflowers | Soybeans
| Grasshoppers |
Sunflower Insect Trap ]
[ Archives ]
Grasshoppers
Survey Data for 2011
Other Links | Publications | Thresholds | Comments | Grasshopper Archives
Grasshopper counts reported by the survey are based on sweep net samples taken along field margins or in non-crop areas bordering fields. Survey scouts have been instructed to sample all crop sites visited, regardless of crop, since grasshoppers are a general plant feeder and could affect any of our North Dakota crops.
| SURVEY DATES | |||||||||||
GRASSHOPPERS |
6/1-6/10 | 6/6-6/17 | 6/13-6/24 | 6/20-7/1 | 6/27-7/8 | 7/4-7/15 | 7/11-7/22 | 7/18-7/29 | 7/25-8/5 | 8/1-8/12 | Season Final |
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Grasshoppers-Nymphs |
Image | Image | Image | Image | Image | Image | Image | Image | Image | ||
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Grasshoppers-Adults |
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Other Links
Cereal Growth Stages-Zadoks Decimal Code
Publications
Grasshopper Biology and Management for North Dakota
Grasshopper
Information
Thresholds
Infestation Ratings
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Nymphs |
Adults
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| Rating | Margin | Field | Margin | Field |
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Light
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25-35
50-75 100-150 200+ |
15-23
30-45 60-90 120 |
10-20
21-40 41-80 80+ |
3-7
8-14 15-28 28+ |
In general, grasshopper populations classified as threatening are expected to cause crop damage and warrant treatment.
For more information, please contact:
Marcia McMullen, Plant
Pathologist, IPM Coordinator
marcia.mcmullen@ndsu.edu
Jan Knodel, Entomologist
janet.knodel@ndsu.edu
Webmaster: Web_Master@ndsu.nodak.edu
