August 9, 2006:
High temperatures and lower relative humidity can increase the risk of pesticide drift because they reduce droplet size through increased evaporation. Restrict spraying when temperatures are more than 25 degrees Celsius or take other precautions to reduce drift such as lowering boom height, using larger nozzle sizes and using wider buffer zones. Do not apply pesticides when a temperature inversion is present as droplets will hang in the air after application and can later move to adjacent environmentally sensitive areas.
The information on this website is available for reprint with credit to "The Alberta Environmental Farm Plan, www.albertaEFP.com".
Article development courtesy of The Alberta Environmental Farm Plan Company