University of
Nebraska		 Ent Web Logo Department
of Entomology

Insecticides for Control of Grasshoppers in Dry Beans

Updated February 21, 2003 by Gary Hein and John Thomas

Economic Threshold:
Infestations of 8 or more grasshoppers per square yard within the field or 20 or more in the field margins are considered to be of economic importance. During vegetative growth stages, the level of defoliation that will result in economic losses ranges from 25-40%. For reproductive stages (flowering and pod fill), economic losses would be expected if defoliation exceeds 5-15%.

This list is not inclusive. See http://www.greenbook.net or other resources for additional registrations.
This information is presented in abbreviated form. Be sure to consult the label for additional information and restrictions.

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IRAC Mode of Action Classification:
  • Group 1 = Acetylcholine esterase inhibitors; 1B = Organophosphates
  • Group 3 = Sodium channel modulators
R = Restricted-Use Product * = Suitable for chemigation ai = active ingredient REI = Re-Entry Interval
PHI = Pre harvest interval
Mode of
Action		 Product
Name		 Common
Name		 Rate
Formulation/Acre
(unless otherwise noted)		 Restrictions/Comments
3 R Asana XL* esfenvalerate 5.8 - 9.6 oz PHI 21 days. REI 12 hrs.
1B Dimate 4EC* dimethoate see label for rates See label for PHI. REI 48hrs.
1B Dimethoate*
(Multiple Formulations)		 dimethoate 0.25 - 0.5 lbs ai See label for PHI. REI 48 hrs.
3 R Mustang*,
Fury*		 zeta-cypermethrin 3.4 - 4.3 oz PHI 21 days. REI 12 hrs.
1B R Orthene,
Acephate 75
(Multiple Formulations)		 acephate see label for rates PHI 14 days. REI 24 hrs.
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