REDUCING DRIFTABLE FINES IN AERIAL APPLICATION OF PESTICIDES BY CONTROLLING NOZZLE ENVIRONMENT
Russ Stocker, Akesson, N., Peshel, W.
Russ Stocker, Bob's Flying Service,
Summary: Spray drift is one of the most significant issues facing aerial applicators. Material not applied to the target crop or pest is a financial loss for the farmer and a potential liability for the applicator. Off-site drift also represents an environmental liability, particularly as habitat and water quality concerns demand greater attention with larger buffer and/or no-spray zones. Control of nozzle environment allows control of air velocity where atomization occurs, reducing driftable fine production and reducing off-site movement of spray material. Control of nozzle environment is accomplished using a chamber having 3-sections, called a Reverse Venturi Atomization Chamber (RVA). By reducing the air speed were atomization occurs, the atomization profile produces a tighter curve and has fewer fines, leading to less drift.
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