When planning for possible pesticide applications in an IPM program, review and complete this checklist to consider practices that minimize environmental and efficacy problems.
· Choose a pesticide from the UC IPM Pest Management Guidelines for the target pest considering:
o Potential for water quality problems using the UC IPM WaterTox database.
o Impact on aquatic invertebrates. (See Pesticide Choice publication for impact on aquatic invertebrates.)
o Chemical mode of action (based on efficacy, spectrum of activity, and pesticide resistance). Select an alternative chemical or nonchemical treatment when resistance risk is high.
· Select an alternative chemical or nonchemical treatment when risk is high.
o Choose sprayers and application procedures that keep pesticides on target.
o Identify and take special care to protect sensitive areas (for example, waterways or riparian areas) surrounding your application site.
o Review and follow label for pesticide handling, storage, and disposal guidelines.
o Check and follow restricted entry intervals (REI) and preharvest intervals (PHI).
o After an application is made, record application date, product used, rate, and location of application. Follow up to confirm that treatment was effective.
· Consider water management practices that reduce pesticide movement off-site:
o Install a tailwater recovery system for recirculating water if flood irrigating.
o Limit irrigation to amount required by evapotranspiration (ET). Use soil moisture or stem water potential monitoring to confirm water status.
o Consider vegetative filter strips or ditches to moderate winter rainfall runoff if resident vegetation is inadequate.
o Redesign inlets into tailwater ditches to reduce erosion.
· Consider management practices that reduce air quality problems.
When possible, choose pesticides that are not in emulsifiable concentrate (EC) form which release volatile organic compounds (VOCs). VOCs react with sunlight to form ozone, a major air pollutant.
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