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Vegetable IPM Updates Archive
Cooperative Extension
Herbicide Use on Leaf Lettuce- part 2 (February 5, 2014)
The last Vegetable IPM Advisory contained a chart for herbicide use in leaf lettuce for California. California has very comprehensive pesticide reporting requirements that require all applications, including private applications, be reported. This week we have included a chart for herbicide use in leaf lettuce for Arizona. The information for this chart was provided by Wayne Dixon from the Arizona Pest Management Center Pesticide Use Database. It is based on 1080 Pesticide use reports for Arizona. Arizona does not require that private applications be reported and these numbers cannot be considered as complete. However, the trends that are illustrated closely follow those for California. Pronamide use has dropped sharply since the registration for leaf lettuce was cancelled. Bensulide use has increased significantly at the same time while Benefin use increased slightly but remains the lesser of the 3 preemergent herbicides used on leaf lettuce.

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