Comparison of Drift for Four Drift-Reducing Flat-fan Nozzle Types Measured in a Wind Tunnel and Evaluated using DropletScan Software. Results of Position 1 and 2 Card Data:. Robert E. Wolf & Daniel D. Frohberg, Kansas State University , Manhattan, KS. Objective
Comparison of Drift for Four Drift-Reducing Flat-fan Nozzle Types Measured in a Wind Tunnel and Evaluated using DropletScan Software
Results of Position 1 and 2 Card Data:
Robert E. Wolf & Daniel D. Frohberg, Kansas State University, Manhattan, KS
This study was to compare, in a wind tunnel, the amount of drift from venturi, Combo-Jet, extended range, and turbo flat-fan nozzles at the recommended operating pressure for each.
Four drift-reducing flat-fan nozzles were compared for drift volume at 47 and 94 L/ha, parallel to a 4.6 m/s wind speed, and at their common recommended field operating psi.
A wind tunnel was used to compare drift amounts from venturi, (AI); extended range, (XR); turbo, (TT); and Combo-Jet, (DR) flat-fan spray tips. The AI, XR, and TT are Spraying Systems tips and the DR tip is from Wilger.
Controlling or minimizing the off-target movement of sprayed crop protection products is critical. Nozzle manufactures are designing nozzles that will effectively reduce the volume of driftable fines found in the spray droplet spectra. A recent trend is to incorporate a ‘venturi’ that includes the spray droplet in air to lessen the drift potential. More information about how to use the latest nozzle technologies to maximize efficacy while minimizing the drift potential is important.