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Keeping Pesticides on TargetJanuary 2010
Two primary causes
Pesticide Movement
Movement by drift
Movement by water
Drift
Keeping Pesticides on TargetJanuary 2010
Atrazine Princep
Setback Requirement
Surface Waters & Wells
Banvel Status
Wells
Keeping Pesticides on TargetJanuary 2010
Protect Groundwater
Users are advised not to apply this chemical
to sand and loamy soils where the water
table (groundwater) is close to the surface
and where the soils are permeable.
Keeping Pesticides on TargetJanuary 2010
Reducing droplet size by one-half . . . . . . results in eight times the number of droplets
200Microns
100Microns
Spray Droplet Size
100Microns
100Microns
100Microns
100Microns
100Microns
100Microns
100Microns
Keeping Pesticides on TargetJanuary 2010
Nonpoint Source
Sources of Pollution
DriftDrift
Runoff
Runoff
Leaching
Leaching
SpillsSpills
Back Siphoning
Back Siphoning
Point Source
Keeping Pesticides on TargetJanuary 2010
Scout Fields
Lady Beetle
Lacewing larvae
Syrphid maggot
Alfalfa weevil potasson luna
(608) [email protected]://ipcm.wisc.edu/pat