Pesticide Drift Management. Dr. Eric P. Prostko Extension Weed Specialist University of Georgia. Pesticide Drift Management Topics For Discussion. definition types of drift factors affecting drift equipment management. What is pesticide drift??.
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Dr. Eric P. Prostko
Extension Weed Specialist
University of Georgia
Applied 30 DAP
Studies have shown that equipment and its operation are responsible for 68-90% of the physical drift problems while weather accounts for 10-32%.
D. B. Smith et al., 1982
Based upon 10’ fall in 3 MPH winds
* reduces volume of
droplets below 200
microns up to 65%
* 0.7% - 200 microns
* Easy and inexpensive
* Wide-angle nozzles can be placed lower to the ground but also produce smaller droplets.
* most important
30% < 100 microns
88% < 100 microns
* wind speed
Note: The higher the number the more volatile the chemical.
Source: W. Bowers. 1975. Ohio State Univ. Extension, Facts #1203.
nozzle selection responsible for 68-90% of the physical drift problems while weather accounts for 10-32%.
lower boom height
increase nozzle size
avoid spraying when winds exceed 10 MPH
lookout for inversions
use common senseTop 10 Tips For Reducing Pesticide Drift