Singh, Manjeet and Ghanshyam, C. and Mishra, Pramod Kumar and Chak, Rajesh (2013) Current Status of Electrostatic Spraying Technology for Efficient Crop Protection. AMA-Agricultural Mechanization in Asia Africa and Latin America, 44 (2). pp. 46-53.

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Pesticide application to protect crops against diseases and pests is an integral part of modern farming. Electrostatic spraying of pesticides improves not only the deposition efficiency but also the spatial distribution of deposited droplets throughout the plant canopy, particularly under leaf application where pests usually hide and reside. A review of current status in the field of electrostatic spraying technology for agricultural applications is presented in this paper. Current results of research conducted on the electrostatic spraying, charging methods, induction parameters, sprayer testing, and bio-efficacy have been presented. Research findings on the induction charging method, charge to mass ratio, air flow speed, electrode radius and distance from nozzle, voltage, spray distribution pattern, spray deposition, image analysis and drift losses are summarized in this review. It is found that induction charging is the most widely used method, as the high voltage for particle charging does not directly contact the liquid, the electric field strength is below the breakdown strength of the air, its working voltage is relatively low, and electrode insulation is easier. The high charging voltage leads to high charge to mass ratio and higher underside deposits. The average deposit does not increase with the charging voltage. The charging factor increases first and then decreases or remains unchanged with the increasing distance between electrode and nozzle. The use of machine vision combined with image analysis is considered to increase speed, ease of use and to reduce the cost of spray deposition assessment. With the electrostatic spraying, the mortality of pests is also higher than non-electrostatic spraying. Reducing spray volume from 250 1/ha to 1 1/ha does not change bio-efficacy in the electrostatic spraying.

Item Type: Article
Depositing User: Dr. Sarita Ghosh
Date Deposited: 21 Sep 2016 07:29
Last Modified: 21 Sep 2016 07:29

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