How to Manage Pests

UC Pest Management Guidelines

Sugarbeet

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

(Reviewed 11/05, updated 1/10, pesticides updated 9/16)

In this Guideline:


Common name
(trade name)
Mode of action1 Selectivity2
(affected groups)
Predatory mites3 General predators4 Parasites4 Honey bees5 Duration of impact to natural enemies6
Bacillus thuringiensis ssp. aizawai 11A narrow (caterpillars) L L L II short
Bacillus thuringiensis ssp. kurstaki 11A narrow (caterpillars) L L L III short
carbaryl (Sevin bait) 1A narrow (cutworms, army-worms, grasshoppers, etc.) L L L III short
carbaryl (Sevin XLR Plus) 1A broad (insects, mites) L H L I long
chlorantraniliprole (Coragen) 28 narrow (primarily caterpillars) L L L/M III short
chlorpyrifos (Lorsban) 1B broad (insects, mites) M H H I moderate
esfenvalerate (Asana) 3A broad (insects, mites) H M H I moderate
imidacloprid (Admire) 4A narrow (sucking insects, beet armyworm, cutworms) L I
insecticidal soap (M-Pede) broad (exposed insects, mites) M M M III short
methomyl (Lannate) 1A broad (insects, mites) H H H I moderate
methoxyfenozide (Intrepid) 18 narrow (caterpillars) L L L II short
naled (Dibrom) 1B broad (insects, mites) H H H I
petroleum oils broad (exposed insects, mites) L8 L L II short
phorate (Thimet granules) 1B III short
spinetoram (Radiant SC) 5 narrow (caterpillars, thrips, whiteflies, aphids, scales, leafminers) L/M M8 M/H II moderate9
spinosad (Entrust, Success) 5 narrow (caterpillars, whiteflies, aphids, leafminers) L/H M10 L/M II short to moderate
sulfur narrow (mites) L/H M/L H III short
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 the 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).
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. 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 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 label and regulations; III—No bee precaution, except when required by the 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 Not hazardous to bees when applied at least 4 weeks before bloom.
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.
10 Toxic against some natural enemies (predatory thrips, syrphid fly larvae) when sprayed and shortly after (8-24 hours).

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Sugarbeet
UC ANR Publication 3469

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

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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