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How to Manage Pests

UC Pest Management Guidelines


Relative Toxicities Of Insecticides And Miticides Used In Eggplants To Natural Enemies And Honey Bees

(Reviewed 4/10, updated 12/11)

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
abamectin (Agri-Mek) 6 moderate (mites) M L M/H I7  
acetamiprid (Assail WP) 4A moderate (sucking insects/larvae) 8 9 III moderate
Bacillus thuringiensis ssp. aizawai 11 narrow (caterpillars) L L L IV short
Bacillus thuringiensis ssp. kurstaki 11 narrow (caterpillars) L L L IV short
esfenvalerate (Asana XL) 3 broad (insect, mites) H M H I10 moderate
fenbutatin-oxide (Vendex) 12B narrow (pest mites) L L L IV short
fenpropathrin (Danitol) 3 broad (insects, mites) H H H I
flonicamid (Beleaf) 9C L L IV short
imidacloprid (Admire) 4A narrow (sucking insects, armyworms) L I11
imidacloprid (Provado) 4A narrow (sucking insects) M M H II moderate
insecticidal soap (M-Pede) broad (exposed insects, mites) L L L IV short
malathion 1B broad (insects, mites) M H H II moderate
methomyl (Lannate SP, LV) 1A broad (insects, mites) H H H III moderate
oxamyl (Vydate) 1A broad (insects, mites) H H H II12 moderate
permethrin (Pounce WP) 3 broad (insects, mites) L H H I long
petroleum oil broad (exposed insects, mites) L13 L L III short
pyrethrin (PyGanic EC) 3 broad (insects) M M III short
pyriproxyfen (Knack) 7C narrow (aphids, whiteflies) L H14 L IV short
spinosad (Entrust, Success) 5 narrow (caterpillars, thrips, whiteflies, aphids) M M15 L/M III short to moderate
H = high M = moderate L = low — = no information
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). For additional information, see their Web site 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 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 to blooming plants; II-Apply only during late evening; III-Apply only during late evening, night, or early morning; and IV-Apply at any time with reasonable safety to bees. For more information, see How to Reduce Bee Poisoning From Pesticides (PDF), Pacific Northwest Extension Publication PNW591.
6 Duration: short means hours to days; moderate means days to 2 weeks; and long means many weeks or months.
7 If rate is 0.025 lb a.i./acre, rating is II.
8 May cause flare-ups of spider mite populations.
9 Acute toxicity low but reproductive capacity is impacted.
10 If rate is 0.025 lb a.i./acre, rating is II.
11 If rate is 0.1 lb a.i./acre, rating is II.
12 If rate is 0.5 lb a.i./acre or less, rating is III.
13 Rating depends on rate used.
14 Kills lady beetles.
15 Toxic against some natural enemies (predatory thrips, syrphid fly and lacewing larvae, beetles) when sprayed and up to 5 to 7 days after.



[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Eggplant
UC ANR Publication 3475
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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