Reduction of spray losses to soil in soybean (Glycine max L.): Through optimization of operational parameters
2015
Kousik, Prasun Saha (Central Institute of Agricultural Engineering, Bhopal (India)) | Singh, Dushyant (Central Institute of Agricultural Engineering, Bhopal (India)) | Kamalnayan, Agrawal (Central Institute of Agricultural Engineering, Bhopal (India)) | Bhushanababu, Vattiprolu (Central Institute of Agricultural Engineering, Bhopal (India))
Spraying of plant protection chemicals is widely practised for minimizing the losses occurred due to attack of insect pests, and occurrence of diseases. However, indiscriminate and improper use of pesticide has brought up many environmental issues especially the soil pollution. Application of pesticide and its deposition at the target surface has drawn much attention to improve the efficacy of spray. A number of factors affect the deposition of pesticide on the plant surface and its loss to soil. These factors include both morphological characteristics of leaf and operational parameters of spraying. Among the operational parameters type of nozzle, pressure, droplet size, travel speed, etc. are some of the factors responsible for efficacy of spray on plant and losses to soil. Crop growth stage also affects the efficacy of the spray. The study established that spraying of insecticides with a suitable hydraulic sprayer fitted with HCN-80250 nozzle having provision for air supply at an advanced stage of crop growth with a travel speed of 3.5 km per hour ensure minimum spray losses to soil in soybean crop with considerably higher coverage area by the droplets on both sides of the leaves.
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