Spray drift as affected by meteorological conditions

Area of Science:

• Agricultural Science
• Environmental Science
• Pesticide Application Technology

Background:

• Spray drift, the off-target movement of pesticides, poses a significant challenge in agricultural chemical applications.
• Understanding and quantifying spray drift is crucial for minimizing environmental contamination and ensuring application efficacy.

Purpose of the Study:

• To measure and compare spray drift under diverse climatological conditions in field settings.
• To develop a predictive model for spray drift based on meteorological parameters.

Main Methods:

• Spray drift was quantified using horizontal drift collectors for sedimenting drift and pipe cleaners for airborne drift.
• Meteorological conditions, including wind speed and temperature, were monitored during field experiments.
• A reference spraying technique was employed for consistent data collection.

Main Results:

• A drift prediction equation was formulated to estimate sedimenting drift magnitude at various distances and atmospheric conditions.
• The developed equation allows for the comparison of different spraying techniques and weather scenarios against a reference.

Conclusions:

• The study provides a method for quantifying spray drift under field conditions.
• The established drift prediction equation serves as a valuable tool for assessing and managing pesticide drift risks.