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Deposition Studies of a Prototype Air-assisted Electrostatic Sprayer

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1009018.(doi:10.13031/2013.29786)
Authors:   Jizhong Zhou, Xiongkui He
Keywords:   Underside deposition, air-assisted electrostatic spraying, charging voltage, application orientation

Crops like cotton and soybean are shown very dense canopies at the later growth stages. How to control insects and diseases efficiently for those crops challenges the farmers. Air flow is used to help penetration into the canopy and electrostatic spraying can provide additional benefits to increase deposits, especially on the underside surfaces of leaves. Laboratory experiments were carried out to determine the deposition characteristics of a prototype air-assisted electrostatic sprayer. Factors incorporated air pressure, flow rate, charging voltage, and application orientation were studied. The emphasis was on the underside deposits affected by various factors. Air pressure and charging voltage were the key factors for desired deposits; however, high air pressures and charging voltages were avoided because of high power consumption and potential safety problem.

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