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RISS 인기검색어
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- 저자 : Jyoti Bikram (검색결과 1 건)
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Sawant C. P.,Jyoti Bikram,Gaikwad B. B.,Gaikwad Nilesh,Kumar Neeraj,Kumar Manoj 한국농업기계학회 2023 바이오시스템공학 Vol.48 No.2
Purpose The present study intended to optimize the spray control parameters of a microcontroller-based site-specifi c spray module under laboratory conditions using response surface methodology (RSM) and radial basis function neural networkparticle swarm optimization (RBFNN-PSO) and to evaluate the fi eld performance of the developed sprayer under optimal parameter conditions. Methods Microcontroller-based site-specifi c spray module was mounted on a test trolley and subjected to increasing levels of nozzle pressure (294, 343, and 392 kPa), speed (0.83, 1.11, and 1.39 m s −1 ), leaf orientation (− 40, 0, and 40°), number of nozzles (3, 4, and 5) and distance of application (0.35 and 0.5 m). The spray uniformity index (SUI) was calculated using the deposition of droplets on water-sensitive paper attached to both sides of the leaves. Results The increase in pressure reduced the volume and number median diameter of droplets while increasing droplet density and coverage. The ANOVA results revealed that pressure, speed, leaf orientations, pressure × speed, and pressure × leaf orientation had a significant effect ( p < 0.01) on SUI. The response curves generated from RSM favoured low pressure and speed for better SUI and predicted optimal parameters reasonably well. Contrary, RBFNN performed superiorly in the simulation of SUI over RSM and RBFNN-PSO-based optimal parameters were 294-kPa pressure, 0.83-m s −1 operational speed, − 40° leaf orientation, 3 nozzles, and 0.35-m distance of application for an SUI of 98.43% against an actual value of 99.18%. Under the field test, the tractor-operated smart sprayer demonstrated a field capacity of 0.84 ha h −1 and field efficiency of 60% along with 46.2% savings in operational cost (Rs. ha −1 ) as compared to battery operated knapsack sprayer and 72% savings of liquid chemical compared to the continuous application as with the case of conventional boom sprayer. Conclusions The site-specifi c spraying integrated with optimal conditions can reduce the chemical amount, input cost, and associated noxious impact on the environment besides improving the spray eff ectiveness.
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