How to Manage Pests

UC Pest Management Guidelines

Dry Beans

Relative Toxicities of Insecticides and Miticides Used in Dry Beans to Natural Enemies and Honey Bees

(Reviewed 8/07, updated 10/10, corrected 10/16)

In this Guideline:


Common name (trade name and formulation) Mode of action1 Selectivity2 (affected groups) Predatory mites3 General predators4 Parasites4 Honey bees5 Duration of impact to natural enemies6
acephate (Orthene SP) 1B broad (insects, mites) H H M/H I moderate
aldicarb (Temik) at planting 1A broad (insects, mites) M M M I long
Bacillus thuringiensis ssp. aizawai 11A narrow (caterpillars) L L L II short
Bacillus thuringiensis ssp. kurstaki 11A narrow (caterpillars) L L L III short
bifenazate (Acramite) un narrow (spider mites) L L L II short
carbaryl (Sevin S) 1A broad (insects, mites) M/H H H I long
carbaryl (Sevin XLR Plus) 1A broad (insects, mites) L H H I long
cyromazine (Trigard) 17 narrow (leafminers) L L L II short
dicofol (Dicofol 4E) un narrow (pest mites and mites) H M M III long to beneficial mites
dimethoate (EC) 1B broad (insects, mites) H H H I long
lambda-cyhalothrin (Warrior) 3A broad (plant bugs, beetles, caterpillars) H H H I moderate
malathion (EC) 1B broad (insects, mites) M H H I moderate
methomyl (Lannate SP) 1A broad (insects , mites) H H H I moderate
propargite (Omite) 12C narrow (pest mites) M7 L L III short
spinetoram (Radiant) 5 narrow (caterpillars, thrips, whiteflies, aphids, scales, leafminers) L M8 L/M II moderate9
spinosad (Entrust, Success) 5 narrow (caterpillars, thrips, whiteflies, aphids, leafminers) L M8 L/M II short to moderate8
zeta-cypermethrin (Mustang) 3A broad (insects, mites) H M M I moderate
 
H = high     M = moderate     L = low     — = no information     un = unknown or uncertain mode of action
 
1 Rotate chemicals with a different mode-of-action Group number, and do not use products with the same mode-of-action Group number more than twice per season to help prevent development of resistance. For example, the organophosphates have a Group number of 1B; chemicals with a 1B Group number should be alternated with chemicals that have a Group number other than 1B. Mode-of-action group numbers are assigned by IRAC (Insecticide Resistance Action Committee). UNC = MOA uncharacterized
2 Selectivity: broad means it affects most groups of insects and mites; narrow means it affects only a few specific groups.
3 Generally, toxicities are to western predatory mite, Galendromus occidentalis.
4 Toxicities are averages of reported effects and should be used only as a general guide. Actual toxicity of a specific chemical depends on the species of predator or parasite, environmental conditions, and application rate.
5 Ratings are as follows: I—Do not apply or allow to drift to plants that are flowering; II—Do not apply or allow to drift to plants that are flowering, except when the application is made between sunset and midnight if allowed by the pesticide label and regulations; III—No bee precaution, except when required by the pesticide label or regulations. For more information about pesticide synergistic effects, see Bee Precaution Pesticide Ratings.
6 Duration: short means hours to days; moderate means days to two weeks; and long means many weeks or months.
7 Use lowest rates for best management of western predatory mite/spider mite ratio.
8 Toxic against some natural enemies (predatory thrips, syrphid fly and lacewing larvae, beetles) when sprayed and up to 5-7 days after, especially for syrphid fly larvae.
9 Residual is moderate if solution is between pH of 7 to 8.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Dry Beans
UC ANR Publication 3446

General Information

Acknowledgements: This table was compiled based on research data and experience of University of California scientists who work on a variety of crops and contribute to the Pest Management Guideline database, and from Flint, M.L. and S.H. Dreistadt. 1998. Natural Enemies Handbook: An Illustrated Guide to Biological Pest Control, ANR Publication 3386.

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