Analysis of Trend in Cotton Arrivals in Vijayapura, Haveri, Raichur and Ranibennur Markets of Karnataka, India
Y. Nagaraja *
Department of Agricultural Statistics, Applied Mathematics and Computer Science, University of Agricultural Sciences, GKVK, Bengalore-560065, India.
A. P. Jahnavi
Department of Agricultural Statistics, Applied Mathematics and Computer Science, University of Agricultural Sciences, GKVK, Bengalore-560065, India.
H. T. Vinay
Department of Agricultural Statistics, Uttara Banga Krishi Viswavidyalaya, Pundibari, Coochbehar-736165, India.
Sushma .
ICAR- National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Ramagondanahalli, Yelahanka, Bengaluru-560064, India.
*Author to whom correspondence should be addressed.
Abstract
Cotton is the most important commercial crop grown in India. It is also known as ‘White Gold’. India is the highest producer of cotton in the world followed by USA and China. Karnataka has the fourth position in area and production of cotton in the country. To analyse cotton arrival trend, the monthly data on arrivals of cotton was collected from Vijayapura, Haveri, Raichur and Ranibennur APMCs for the period of 16 years (2003-2018). To analyze the trend in arrivals of cotton, linear and nonlinear models were fitted. RMSE and R2 values were considered to check the adequacy of the fitted models. For arrivals of cotton, in few markets linear and in other markets nonlinear models were best fitted.
Keywords: Linear model, quadratic model, cubic model, exponential model, sigmoid model, RMSE and R2