Effect of agrochemical for paddy yield in Kalutara district: a regression approach

Abstract

Paddy is a major crop in Sri Lanka. Many farmers use Agro-Chemicals for their crops. Farmers believe that Agro-chemical increases the paddy yield. The objectives of the research were to: identify the effect of the fertilizer consumption to the paddy yield in Kalutara district; identify the effect of the pesticide usage to the paddy yield in Kalutara district, identify the relationship between paddy yield and fertilizer consumption, pesticide usage. Simple random sampling technique was used to select the sample of farmers. Regression analysis used as the analyzing technique for this specific study. The average fertilizer and pesticide usage around 622.5 kilograms per acre and 248.4-millilitres per acre respectively. The regression equation as follows: Log Paddy yield = 5.95 + 0.001458 Fertilizer consumption (KG per acre). The coefficient value for fertilizer consumption of the regression equation around 0.001458, With increment of one KG of fertilizer 0.001458 KG of paddy yield per acre can be expected to increase. According to the regression analysis fertilizer consumption positivity impact for the paddy yield while pesticide consumption negatively effects for the paddy yield. But to increase the paddy, yield the farmers use an acceptable level of fertilizer level and the pesticide level.