Vol. 11, Issue 11 (2022)

Author(s):
T Kavya, KV Prakash, Sushilendra, Vijayakumar Palled and Sushila Nadagouda

Abstract:
Sprayer is an equipment used for spraying liquid, especially a substance used to kill insects that damage crops. A spray nozzle is a device that facilitates the dispersion of a liquid by the formation of a spray. The objective of this study is to determine the effect of operating pressure (A), orifice size (B) and height of spray (C) on uniformity of distribution of developed portable knapsack boom power sprayer. The observations were analyzed by using completely randomized design (CRD) test. It was found that the uniformity of distribution was more as the pressure increased from 3 to 6 kg cm^-2 at height of spray from 30 to 60 cm. Orifice size of 1 mm gives better uniformity of distribution at 45 cm height of spray and 6 kg cm^-2. The results shown that uniformity of distribution concentrated more in the centre of the patternator and gradually decreased as distance increased from centre of the patternator. The uniformity of distribution varied with different orifice size. This is probably due to the behavior of nozzles of different spray angels. It was found that orifice size is very important parameter which affect the distribution of pattern (CV) The low value of coefficient of variation represents an indicator for good uniformity distribution.