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Abstract

The article conducts economic research on the development of resource-saving technologies in the artificial shedding of cotton leaves and new scientific and technical solutions for the formation of high-dispersion droplets of spraying equipment, including the technological operation of high-dispersion droplet-forming spraying devices for small-volume fan sprayers.The experimental spraying unit, equipped with advanced cultivators, was tested in the field under typical field conditions and optimal agro-technical terms for the agro-technical evaluation test area. During the study, test schemes were adopted to determine the performance of sprayers in the field, soil type, relief and microrelief, soil moisture and hardness were determined in accordance with GOST 20915. According to the agronomic data of the farm, the size of the plant, the number of yielding elements and the number of yielding branches per plant were determined. The developmental phase was determined (visually) by reviewing the leaf surface description (by density). Meteorological conditions were determined during the evaluation of the performance of the experimental spraying unit. The process of defoliation on the prepared background was carried out in agrotechnical terms with a working solution of defoliant Super chlorate magnesium Mg(ClO3)2. 10-15 min after the defoliation process, the droplets were removed from the hanging site by drying and the total number of droplets, coating density and median-mass diameter on the upper and lower sides of the droplets were analyzed by scanning using the DepositScan program. For conventional and experimental spraying units, the results of comparing the technical efficiency on the first day, after 6 days and after 12 days of the cotton defoliation process are presented. Their performance was determined on the basis of field tests of the experimental spraying unit and the traditional CFS-600 sprayer. The use of a developed high-dispersion droplet-forming turbulizer was studied in terms of working fluid consumption per hectare, labor consumption, opening rate of cotton leaves and stalks, annual economic efficiency in the defoliation process relative to the existing spraying unit.

First Page

238

Last Page

248

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