Leafhoppers attack soybeans during late June through July but rarely reach population levels that affect yields. Using a standard 15-inch sweep net, take five sweeps in each of five locations in the field. Count the number of leafhoppers, and empty the net before proceeding to the next location. A single sweep consists of a swath of the net in one direction only across the top one-third of the plants along the row. The symptoms of leafhopper injury include localized stippling, curling, and yellowing of leaf margins. Treatment is suggested when injury appears and infestations exceed four leafhoppers per sweep in stressed beans or eight leafhoppers per sweep in normal-growing fields. Dense pubescent varieties are less susceptible.
You are viewing records 1 - 5 of 8. Next 3 Records| Insecticide and formulation | Rate of active ingredient per acre | Rate of formulation per acre | Time lmits: Days before harvest | Remarks |
|---|---|---|---|---|
| esfenvalerate (Asana XL 0.66EC) |
0.015-0.03 lb | 2.9-5.8 oz | 21 | Restricted Use: |
| lambdacyhalothrin (Lambda-Cy 1EC) |
0.015-0.025 lb | 1.92-3.20 fl oz | 30 | Restricted Use: |
| lambdacyhalothrin (Warrior II) |
0.015-0.025 lb | 0.96-1.60 oz | 30 | Restricted Use: |
| permethrin (Permethrin 3.2EC) |
0.05-0.1 lb | 2.0-4.0 oz | 60 | Restricted Use: |
| zeta-cypermethrin (Mustang MAX 0.8EC) |
0.018-0.025 lb | 2.8-4.0 oz | 21 | Restricted Use: |
