SEDL / STP / STP1078-EB / STP25382S

Off Target Pesticide Losses Resulting from the Use of an Air-assisted Orchard Sprayer

Riley, CM
Pesticide Application Specialist, Research and Productivity Council, New Brunswick,

Wiesner, CJ
Senior Scientist, Research and Productivity Council, New Brunswick,

Pages: 22    Published: Jan 1990

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Abstract

This report details the off-target spray losses resulting from the application of five insecticide sprays to an orchard using a Good Boy ^®air assisted sprayer. Off-target deposition on the ground was assessed using a number of flat plate collectors placed at distances up to 200 m downwind of the orchard. Time integrated airborne spray flux was measured using Rotorods® and a novel array of sampling wires. The results are discussed and used to produce regression equations from which realistic worst case deposits are predicted.