Growth and Decomposition Analysis of Area, Production and Yield of Maize in Udaipur, Rajasthan, India

Abstract

The present study examined the growth, instability and decomposition of maize area, production and productivity in Udaipur district of Rajasthan. The analysis was based on secondary data for 20 years from 2003-04 to 2022-23, collected from the Directorate of Economics and Statistics, India. For analytical clarity, the study period was divided into Period I (2003-04 to 2012-13), Period II (2013-14 to 2022-23) and the overall period (2003-04 to 2022-23). Compound annual growth rate, coefficient of variation, Cuddy-Della Valle Instability Index and the Minhas and Vaidyanathan decomposition model were used to assess temporal changes and the relative contribution of area, yield and their interaction to maize production growth. The compound annual growth rate for maize area was negative during all periods and was significant at the 1 per cent level during Period II (-1.37%) and the overall period (-0.94%). Production recorded positive but statistically non-significant growth of 1.21%, 1.53% and 0.52% during Period I, Period II and the overall period, respectively. Productivity also increased non-significantly by 1.53%, 2.94% and 1.47% across the same periods. Instability measured through the coefficient of variation was highest in production during Period I (29.43%) and highest in productivity during Period II (24.69%) and the overall period (26.58%). Under the Cuddy-Della Valle Index, production and productivity showed high instability during Period I, while moderate instability was observed during Period II and the overall period. Decomposition analysis indicated that the yield effect was the major contributor during Period I and the overall period, whereas the interaction effect dominated during Period II.