International Journal of Agricultural Engineering

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Effect of Nozzle Discharge Rate and Nozzle Pressure on Uniform Deposition of Spray


Affiliations
1 Farm Machinery Training and Testing Centre, Dr. A. S. College of Agricultural Engineering (M.P.K.V.) Rahuri M.S., India
2 Department of Farm Machinery and Power Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udhaipur Rajasthan, India
3 Farm Machinery Training and Testing Centre, Dr. A.S. College of Agricultural Engineering (M.P.K.V.) Rahuri M.S., India
4 Farm Machinery Training and Testing Centre, Dr. A.S. College of Agricultural Engineering (M.P.K.V.) Rahuri M.S.
     

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Cotton is one of the principal commercial crops in India with 9.5 million ha cultivated area which is largest in the world. India is second largest producer of cotton in the world though the yield is only 300 kg/ha as against the world average of 558 kg/ha, due to poor control of insect pest and dry land farming conditions. During pesticide application most of the pesticide is lost through drift. A major reason for such a pesticide loss is insufficient nozzle pressure, nozzle discharge, nozzle height etc. Hence, it is necessary to determine the optimum discharge rate and pressure so as to reduce the pesticide losses from sprayer. Therefore, the hydraulic boom sprayer was tested using the spray scanner and droplet analyzer in the laboratory for cotton crop to study effect of nozzle discharge rates (0.45, 0.70, 0.90 and 1.35 l/min) and nozzle pressures (275.8, 413.7, 551.6 and 689.5 kPa) on spray uniformity. From the study it was found that nozzle discharge rate of 0.9 l/min and nozzle pressure of 689.5 kPa produced more uniform spray with droplet size of 122.53 to 284.80 μm, droplet density of 17 to 29 drops/cm2 and uniformity coefficient of 0.99 to 1.23.

Keywords

Boom Sprayer, Spray Scanner, Nozzle Discharge Rate, Nozzle Pressure
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  • Effect of Nozzle Discharge Rate and Nozzle Pressure on Uniform Deposition of Spray

Abstract Views: 285  |  PDF Views: 0

Authors

B. S. Gholap
Farm Machinery Training and Testing Centre, Dr. A. S. College of Agricultural Engineering (M.P.K.V.) Rahuri M.S., India
Ravi Mathur
Department of Farm Machinery and Power Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udhaipur Rajasthan, India
S. V. Wandkar
Farm Machinery Training and Testing Centre, Dr. A.S. College of Agricultural Engineering (M.P.K.V.) Rahuri M.S., India
P. P. Jadhav
Farm Machinery Training and Testing Centre, Dr. A.S. College of Agricultural Engineering (M.P.K.V.) Rahuri M.S.

Abstract


Cotton is one of the principal commercial crops in India with 9.5 million ha cultivated area which is largest in the world. India is second largest producer of cotton in the world though the yield is only 300 kg/ha as against the world average of 558 kg/ha, due to poor control of insect pest and dry land farming conditions. During pesticide application most of the pesticide is lost through drift. A major reason for such a pesticide loss is insufficient nozzle pressure, nozzle discharge, nozzle height etc. Hence, it is necessary to determine the optimum discharge rate and pressure so as to reduce the pesticide losses from sprayer. Therefore, the hydraulic boom sprayer was tested using the spray scanner and droplet analyzer in the laboratory for cotton crop to study effect of nozzle discharge rates (0.45, 0.70, 0.90 and 1.35 l/min) and nozzle pressures (275.8, 413.7, 551.6 and 689.5 kPa) on spray uniformity. From the study it was found that nozzle discharge rate of 0.9 l/min and nozzle pressure of 689.5 kPa produced more uniform spray with droplet size of 122.53 to 284.80 μm, droplet density of 17 to 29 drops/cm2 and uniformity coefficient of 0.99 to 1.23.

Keywords


Boom Sprayer, Spray Scanner, Nozzle Discharge Rate, Nozzle Pressure