| H = high M = moderate L = low — = no information un = unknown or uncertain mode of action |
| 1 |
Rotate insecticides 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 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 insecticide 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 2 weeks; and long means many weeks or months. |
| 7 |
Rating depends on rate used. |
| 8 |
Toxic against some natural enemies (predatory thrips, syrphid fly and lacewing larvae, beetles) when sprayed and up to 5 to 7 days after, especially for syrphid fly larvae. |
| 9 |
Residual is moderate if solution is between pH of 7 to 8. |
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 Guidelines database, and from Flint, M. L. and S. H. Dreistadt. 1998. Natural Enemies Handbook: An Illustrated Guide to Biological Pest Control, ANR Publication 3386.