Abstract
Field experiments were conducted to compare the deposition patterns of charged and uncharged sprays. The charged spray was applied with a hand-held electrostatic spinning-disc sprayer and the uncharged spray with a spinning-disc sprayer and a standard knapsack-type hydraulic-nozzle sprayer. Target plants were rice, soybean, and corn. Fluorometric analysis quantified tracer deposits on different elevations of the crop. Fluorescent tracer deposits were determined at the top, middle, and bottom levels of the plant as well as on the front and underside surfaces of the plant leaves. The droplet density (number of drops/cm2) on water-sensitive paper was determined at three plant elevations.
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