Updated February 9, 2017
Guide to Grasshopper Control in Cropland
Grasshopper Identification Guide
Go to https://www.greenbook.net or other resource for additional registrations.
*Consult product label for additional information and restrictions.
Economic Thresholds:
| Grasshopper Population (Hoppers/Square Yard) | Field | Field Margin | Treatment necessary? |
|---|---|---|---|
| Non-economic | 0-2 | 5-10 | No |
| Light | 3-7 | 11-20 | Questionable, depends on size, species, type of crop |
| Moderate | 8-14 | 20-40 | Probably |
| Abundant | 15 or more | 41 or more | Yes |
| IRAC Mode of Action Classification: |
|
| Mode Of Action |
Product
Name |
Common
Name |
Rate
(Formulation/Acre) |
Restrictions/Comments
|
|---|---|---|---|---|
| 3 R | Asana XL | esfenvalerate | 5.8 - 9.6 fl oz | PHI 21 days. Do not feed or graze livestock on treated fields. |
| 3 R | Baythroid XL | cyfluthrin | 2.0 - 2.8 fl oz | PHI 21 days for seed. Green foliage may be fed 15 days after last application. Maximum 2.8 fl oz/acre allowed in 7 day interval, maximum 11.2 fl oz per crop season. |
| 3, 28 R | Besiege | lambda-cyhalothrin, chlorantraniliprole |
8 - 10 fl oz | PHI 30 days. Do not graze or harvest treated soybean forage, straw, or hay for livestock feed. |
| 3 R | Brigade 2EC | bifenthrin | 2.1-6.4 fl oz | PHI 18 days. |
| 1B, 3 R | Cobalt | chlorpyrifos and cyhalothrin |
7 - 13 fl oz | PHI 30 days. Maximum allowed per crop season is 85 fl oz/acre. Do not allow meat or dairy animals to graze in treated areas or feed treated soybean forage, hay, and straw to meat or dairy animals. |
| 1B, 3 R | Cobalt Advanced | chlorpyrifos and lambda-cyhalothrin |
6 - 13 fl oz | PHI 30 days. Maximum allowed per crop season is 85 fl oz/acre. Do not allow meat or dairy animals to graze in treated areas or feed treated soybean forage, hay, and straw to meat or dairy animals. |
| 3 R | Delta Gold 1.5 EC | deltamethrin | 1.5 - 2.4 fl oz | PHI 21 days. Maximum allowed per crop season is 8.5 fl oz/acre. Do not allow livestock to graze treated forage, or feed treated hay to livestock. |
| 1B | Dimethoate 400 | dimethoate | 1 pt | PHI 21 days. Maximum application rate is 0.5 lb/acre. 7 day reapplication interval. |
| 15 R | Dimilin 25W, 2L | diflubenzuron | 2 fl oz | PHI 21 days. No more than 2 applications per season. Treat when majority of grasshoppers have reached 2nd - 3rd instar. |
| 3, 4A R | Endigo ZC | lambda-cyhalothrin and thiamethoxam |
4.0 - 4.5 fl oz | PHI 30 days. Do not exceed a total of 9.0 fl oz per acre per growing season. Do not graze or harvest treated soybean forage, straw, or hay for livestock feed. |
| 3 R | Fastac EC | alpha-cyhalothrin | 3.2 - 3.8 fl oz | PHI 21 days. Do not graze or harvest treated soybean forage, straw, or hay for livestock feed. |
| 3 R | Hero | zeta-cypremethrin and bifenthrin |
2.6 - 6.1 oz | PHI 21 days. Do not make applications less than 30 days apart. Do not graze or harvest treated soybean forage, straw, or hay for livestock feed. |
| 3, 4A R | Leverage 360 | imidacloprid and cyfluthrin |
2.8 fl oz | PHI 21 days for seed and 15 days for dry vines (hay) and green forage. Minimum of 7 day interval between applications. Maximum of 9.0 fl oz/acre per crop season. |
| 1B R | Lorsban Advanced, Nufos 4E |
chlorpyrifos | 1 - 2 pts | PHI 28 days. Do not apply more than 3 applications of Lorsban Advanced or other product containing chlorpyrifos per year. Limit 6 pints per acre per season. Do not make a second application of Lorsban Advanced within 14 days of the first application. Do not allow meat or dairy animals to graze in treated areas or otherwise feed treated soybean forage, hay, and straw to meat or dairy animals. |
| 3 R | Mustang MAX EC | zeta-cypermethrin | 3.2 - 4.0 fl oz | PHI 21 days. Do not graze or harvest treated soybean forage, straw, or hay for livestock feed. Use higher recommended dosage for increased pest pressure, increased residual pest control or later-season applications. |
| 1B R | Orthene 90S, Bracket 90WDG |
acephate | 0.28 - 0.56 lbs | PHI 14 days. Air applications - 5-10 gal/acre spray solution. Ground Application - 10-50 gal/acre spray solution. |
| 1B R | Penncap-M | methyl parathion | 2 - 3 pts | PHI 30 days for harvest or grazing. Do not make more than 2 applications per season. Do not apply more than once every 7 days. |
| 28 | Prevathon | chlorantraniliprole | 8 - 20 fl oz | PHI 1 day. Minimum interval between treatments is 3 days. Make no more than 4 applications per acre per crop. |
| 3 R | Proaxis | gamma-cyhalothrin | 3.2 - 3.84 fl oz | PHI 45 days. Do not graze or harvest treated soybean forage, straw, or hay for livestock feed. |
| 3 R | Respect | zeta-cypermethrin | 3.2 - 4.0 fl oz | PHI 21 days. Do not graze or harvest treated soybean forage, straw, or hay for livestock feed. |
| 3A, 1B R | Stallion | zeta-cypermethrin and chlorpyrifos |
5.0 - 11.75 fl oz | PHI 28 days. Do not make applications of Stallion less than 14 days apart. Do not make more than 3 applications per season. Do not allow meat or dairy animals to graze in treated areas or otherwise feed treated soybean forage, hay, and straw to meat or dairy animals. |
| 3A R | Steed | zeta-cypermethrin and bifenthrin |
3.5 - 4.7 fl oz | PHI is 21 days. Do not make applications less than 30 days apart and do not apply more than 28.1 fl oz per acre per season. Do not graze or harvest treated soybean forage, straw or hay for livestock feed. |
| 3A, 4A R | Swagger | bifenthrin and imidacloprid |
7.6 - 12.2 fl oz | PHI 18 days. Minimum interval between applications: 30 days. Apply a maximum of 2 applications per season. |
| 3A, 4A R | Triple Crown | zeta cypermethrin, bifenthrin and imidacloprid |
4.8 fl oz | PHI 21 days. Minimum application interval: 30 days. Do not graze or harvest treated soybean forage, straw or hay for livestock feed. |
| 1B, 3 R | Tundra Supreme | chlorpyrifos and bifenthrin |
5.6 - 16.8 fl oz | PHI 28 days. Do not allow meat or dairy animals to graze in treated areas or otherwise feed treated soybean forage, hay and straw to meat or dairy animals. |
| 3 R | Warrior w/ Zeon Technology, Silencer |
lambda- cyhalothrin |
3.2 - 3.84 fl oz | PHI 30 days. Do not graze or harvest treated soybean forage, straw or hay for livestock feed. |
| 3 R | Warrior II w/ Zeon Technology |
lambda- cyhalothrin |
1.60 - 1.92 fl oz | PHI 30 days. Do not graze or harvest treated soybean forage, straw or hay for livestock feed. |