How to Manage Pests

UC Pest Management Guidelines

Peach

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

(Reviewed 4/10, updated 5/12, pesticides updated 9/15, corrected 1/19)

In this Guideline:


Common name
(Example trade name)
Mode of
Action1
Selectivity
(affected groups)2
Predatory Mites3 General Predators4 Parasites4 Honey bees5 Duration of impact to natural enemies6
abamectin (Agri-Mek) 6 moderate (mites) M L M/H I moderate to predatory mites and affected insects
acetamiprid (Assail) 4A moderate (sucking insects, larvae) 7 II moderate
azadirachtin (Neemix) un broad (insects, mites) M L/M L/M II short
Bacillus thuringiensis ssp. kurstaki 11A narrow (caterpillars) L L L III none
bifenazate (Acramite) un narrow (spider mites) L L L II short
buprofezin (Centaur) 16 narrow (scales) L H8 L II long
carbaryl (Sevin XLR Plus) 1A broad (insects, mites) M H M I long
chlorantraniliprole (Altacor) 28 narrow (primarily caterpillars) L L L/M III short
clofentezine (Apollo) 10A narrow (mites) L L L III short
diazinon–foliar (Diazinon 50WP) 1B broad (insects, mites) L H H I moderate to long
diflubenzuron (Dimilin) 15 L H L II
esfenvalerate (Asana) 3A broad (insect, mites) H M H I moderate
fenbutatin oxide (Vendex) 12B narrow (pest mites) L L L III short
hexythiazox (Onager, Savey) 10A narrow (mites) L L L II short
imidacloprid (Admire Pro) 4A narrow (sucking insects) M M H I short to moderate
indoxacarb (Avaunt) 22A narrow (caterpillars, plant bugs) L L L I moderate
methomyl (Lannate) 1A broad (insects, mites) H H H I moderate
methoxyfenozide (Intrepid) 18 narrow (caterpillars) L L L II none
permethrin (Ambush, Pounce) 3A broad (insects, mites) H H H I long
petroleum oil un broad (exposed insects, mites) L L L II short to none
phosmet (Imidan) 1B broad (insects, mites) H H H I moderate to long
pyridaben (Nexter) 21A broad (insects, mites) H M I short
pyriproxyfen (Seize) 7C narrow (scale, beetles) L H8 L II long
spinetoram (Delegate) 5 narrow (caterpillars, thrips, whiteflies, aphids, scales) M M9 L/M II moderate10
spinosad (Entrust, Success) 5 narrow (caterpillars, thrips, whiteflies, aphids, scales) M M9 L/M II short to moderate
spirodiclofen (Envidor) 23 narrow (mites) L II
sulfur un narrow (mites) L/H L H III short
 
H = high     M = moderate    L = low     — = no information     un = unknown or uncertain mode of action
1 Rotate pesticides 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 the development of resistance. For example, the organophosphates have a group number of 1B; insecticides with a 1B group number should be alternated with insecticides that have a group number other than 1B. Mode-of-action group numbers for insecticides and miticides (un=unknown or uncertain mode of action) are assigned by IRAC (Insecticide Resistance Action Committee). For additional information, see their website at http://www.irac-online.org/.
2 Selectivity: broad means it affects most groups of insects and mites; narrow means it affects only a few specific groups.
3 Toxicities are generally to the native strain of the western predatory mite, Galendromus occidentalis. Where differences have been measured in toxicity of the pesticide-resistant strain versus the native strain, these are listed as pesticide-resistant strain/native strain.
4 Toxicities are averages of reported effects and should be used only as a general guide. Actual toxicity of a specific insecticide depends on factors including the application rate, environmental conditions, and life stage and species of parasite or predator.
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 2 weeks; and long means many weeks or months.
7 May cause an increase in spider mite numbers.
8 Kills lady beetles.
9 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.
10 Residual is moderate if solution is between pH of 7 to 8.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Peach
UC ANR Publication 3454

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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