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How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Cherry

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

(Reviewed 4/06, updated 4/06)

In this Guideline:

Common name (trade name) Chemical class1 Mode of action2 Selectivity3 (affected groups) Predatory mites4 General predators5 Parasites5 Honey bees6 Duration of impact to natural enemies7
azinphosmethyl (Guthion) OP 1B broad (insects, mites) L/M H H I long
Bacillus thuringiensis ssp. kurstaki M 11.B2 narrow (caterpillars) L L L IV none
carbaryl (Sevin) 80 C 1A broad (insects, mites) L/H H H I long
carbaryl (Sevin) XLR C 1A broad (insects, mites) L H H II long
carbaryl (Sevin) XLR Plus C 1A broad (insects, mites) L H L III long
chlorpyrifos (Lorsban) OP 1B broad (insects, mites) M H H I moderate
clofentezine (Apollo) T 10A narrow (mites) L L L IV short
diazinon OP 1B broad (insects, mites) L H H I moderate to long
esfenvalerate (Asana) P 3 broad (insect, mites) H M H I moderate
fenbutatin oxide (Vendex) OT — narrow (pest mites) L L L IV short
imidacloprid (Provado) N 4A narrow (sucking insects) — — H II short to moderate
methidathion (Supracide) OP 1B broad (insects , mites) H H H I moderate to long
methoxyfenozide (Intrepid) IGR 18 narrow (caterpillars) L L L IV none
petroleum oil CON — broad (exposed insects, mites) L L L III short to none
propargite (Omite) OS 14 narrow (pest mites) M8 L L IV short
pyriproxyfen (Esteem, Seize) IGR 7C narrow (scale, beetles) L H9 L IV long
spinosad (Entrust, Success) M 5 narrow (caterpillars, thrips, whiteflies, aphids, scales, leafminers) L M10 L/M III short
thiamethoxam (Actara) N 4A narrow (sucking insects) —11 — M I moderate

H = high    M = moderate     L = low

1  Chemical class: C = carbamate; CON = contact including smothering and barrier effect; IGR = insect growth regulator; K = ketoenoles; M = microbial; OP = organophosphate; OS = organosulfur; OT = organotin; P = pyrethroid; T = tetrazine
2 Modes of action are important in preventing the development of resistance to pesticides. 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. 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 is assigned by IRAC (Insecticide Resistance Action Committee). For additional information, see their Web site at http://www.irac-online.org/.
3 Selectivity: Broad means it affects most groups of insects and mites; narrow means it affects only a few specific groups.
4 Generally, toxicites are to western predatory mite, Galendromus occidentalis. Where differences have been measured, these are listed as pesticide-resistant strain/native strain.
5 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.
6 Ratings are as follows: I-Do not apply to blooming plants; II-Apply in evening after bees have stopped foraging; III-Apply in late evening after bees have stopped foraging until early morning before they begin to forage again; and IV-Apply at any time with reasonable safety to bees. For more information, see How to Reduce Bee Poisoning From Pesticides, Pacific Northwest Extension Publication PNW518 (172K, PDF).
7 Duration: Short means hours to days; moderate means days to 2 weeks; and long means many weeks or months.
8 Use lowest rates for best management of western predatory mite/spider mite ratio.
9 Kills lady beetles.
10  Toxic against some natural enemies (predatory thrips, syrphid fly larva, beetles) when sprayed and shortly after (8-24 hrs.).
11 May causes increase in spider mite populations.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Cherry
UC ANR Publication 3440
General Information
Acknowledgments: This table was compiled based on research data and experience of University of California scientists working on a variety of crops.

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