Biological effectiveness of electrostatically charged rotary atomisers.

Abstract

SUMMARY Electrostatic sprayers charged to 30kV and placed 20 cm above the crop increased the chemical deposition of permethrin in field beans and improved control of the pea and bean weevil, Sitona lineatus. Control of the black bean aphid, Aphis fabae , was improved by electrostatic sprayers only when a systemic chemical, demeton‐ S ‐methyl, was used. In spring barley, sprays applied electrostatically or hydraulically gave similar control of barley mildew, Erisyphe graminis.