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A Study of Dosage Adjustment for Pesticide Application in Vineyards

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  1009008.(doi:10.13031/2013.29780)
Authors:   Jizhong Zhou, Andrew J Landers
Keywords:   Tracer, sampling method, UCR, DOSAVIÑA, Fruit-Wall-Area, Vineyard spraying

Traditional pesticide application in grapevines causes large losses to the air and the ground, particularly in early to mid-season application. Traditional application rates do not differ very much according to the season. Pesticide labels for vineyard sprays are based upon ground area, but growers choose different row widths, varieties and trellis designs, so canopy volume varies. Dosage adjustment, according to the fruit canopy characteristic, has been developed. In the trial described in this paper, three of them, Unit Canopy Row (UCR) (Australia), DOSAVIA (Spain and USA) and Fruit-Wall Area (FWA)(Germany and Belgium) are compared with the traditional application rates and their pros and cons are discussed. This paper presents the methodology of the study.

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