Pea is not a preferred host for grasshoppers, but grasshoppers can cause damage to field pea, especially to pea that is in the flower to pod-filling stages.
Both adult and immature grasshoppers are generalized defoliating pests that typically cause the most damage when the adult stage is reached. Grasshopper movement into a cropped field from surrounding areas will result in greater grasshopper numbers, but damage on field edges will occur before the whole field is colonized. If adult grasshopper populations are severe, then control efficacy is often related to the residual activity of the insecticide.
As with many crops, grasshopper control is advised whenever 20 or more adults per square yard are found in field margins or 8 to 14 adults per square yard are occurring in the crop.
Product List for Armyworm:
Insecticide |
Lbs Active Ingredient per Acre (Fl oz. or oz. product) |
Preharvest Interval, remarks |
|
Asana XL R,1 |
5.8 – 9.6 oz |
21 days. Do not apply more than 38.7 oz per season. Do not feed or graze livestock on treated material. |
|
Fury 1.5R |
3.4 – 4.3 oz |
21 days. 12 hr REI. Do not apply more than 24 oz per season. |
|
LannateR,3 |
0.5 -1 lb (SP) 3pts (LV) |
14 days to harvest, grazing or hay. Do not apply more than 4.5 lbs ai /season. Do not make more than 6 applications per crop. Highly toxic to bees, do not apply when bees are foraging. |
|
Mustang Max, 1.5ECR |
2.72 – 4 oz |
21 days. 12 hr REI. Do not apply more than 24 oz per season. |
|
R Restricted Use Pesticide 1 Labeled for chemigation 224c labels may be available, check with State Dept of Agriculture 3Several formulations |
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The information herein is supplied with the understanding that no discrimination is intended and that listing of commercial products, necessary to this guide, implies no endorsement by the authors or the Extension Services of Nebraska, Colorado, Wyoming or Montana. Criticism of products or equipment not listed is neither implied nor intended. Due to constantly changing labels, laws and regulation, the Extension Services can assume no liability for the suggested use of chemicals contained herein. Pesticides must be applied legally complying with all label directions and precautions on the pesticide container and any supplemental labeling and rules of state and federal pesticide regulatory agencies. State rules and regulations and special pesticide use allowances may vary from state to state: contact your State Department of Agriculture for the rules, regulations and allowances applicable in your state and locality. |
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Categories: Dry Peas, Insects, Grasshoppers, Melanoplus spp.
Date: 04/29/2006