Visually inspect the canopy for beetles.
Severe cotyledon feeding, threatened destruction of the growing point, or populations of seven beetles per row-foot on soybeans with four or fewer nodes and
25 percent defoliation, may justify limited area treatments. In most years, 50 or more beetles per row-foot are required to reduce yields in late season. Treatments may be justified if significant pod-feeding occurs while pods are still developing.
None listed.
This information comes from the Kansas State University Agricultural Experiment Station and Cooperative Extension Service publication MF743. Information may not be suitable for states other than Kansas.
|
Insecticide |
Rate |
|
Acephate (Acephate, Bracket, or Orthene) |
(See supplemental labels for formulations and rates.) |
|
Acetamiprid plus bifenthrin (Justice) |
0.0351 to 0.0422 lbs. a.i./acre (2.5 to 3.0 fl. oz./acre) |
|
Alpha-cypermethrin (Fastac EC) |
2.8 to 3.8 fl. oz./acre |
|
Beta-cyfluthrin (Baythroid XL) |
0.0125 to 0.022 lbs. a.i./acre (1.6 to 2.8 fl. oz.) |
|
Bifenthrin plus imidacloprid (Tempest) |
0.06 to 0.095 lbs. a.i./acre (3.8 to 6.1 fl. oz./acre) |
|
Carbaryl (Sevin) |
0.5 to 1 lb. a.i./acre |
|
Chloropyrifos (numerous products) |
Check label, but generally 1 to 2 pints/acre |
|
Chloropyrifos plus gamma-cyhalothrin (Cobalt) |
19 to 38 fl. oz. of product/acre |
|
Chloropyrifos plus zeta-cypermethrin (Stallion) |
5.0 to 11.75 fl. oz./acre |
|
Cyfluthrin (Tombstone) |
Growth stage VC-V2: 0.8. After V2: 1.6 to 2.8 fl. oz./acre, see label |
|
Deltamethrin (Delta Gold) |
0.018 to 0.022 lbs. a.i./acre (1.5 to 1.9 fl. oz.) |
|
Dimethoate (Check labels, bean leaf beetles are not listed on all labels.) |
0.5 lb. a.i./acre |
|
Esfenvalerate (Asana XL 0.66) |
0.03 to 0.05 lb. a.i./acre (5.8 to 9.6 fl. oz.) |
|
Gamma-cyhalothrin (Proaxis) |
0.0075 to 0.0125 lb. a.i./acre (1.92 to 3.20 fl. oz.) |
|
Imidacloprid (Alias 4F, Sherpa) |
Check labels |
|
Imidacloprid plus cyfluthrin (Leverage) |
2.8 fl. oz./acre |
|
Lambda-cyhalothrin (numerous products) |
0.015 to 0.025 lb. a.i./acre |
|
Lambda-cyhalothrin chlorantraniliprole (Besiege) |
5.0 to 10.0 fl. oz./acre |
|
Lambda-cyhalothrin plus thiamethoxam (Endigo ZC) |
4.0 to 4.5 fl. oz./acre |
|
Permethrin (Larvin EC) |
0.45 to 0.75 lb. a.i./acre |
|
Zeta-cypermethrin (Mustang MAXX, etc.) |
0.0175 to 0.025 lb. a.i./acre (2.8 to 4.0 fl. oz.) |
|
Zeta-cypermethrin plus bifenthrin (Hero) |
2.6 to 6.1 fl. oz. of product/acre |