Analysis of growth rates of rice and sorghum in Andhra Pradesh

The growth rates of rice and sorghum for three distinct administrative and agro-climatic regions of Andhra Pradesh were studied using the time series data from 1970–71 to 1999–2000. The growth pattern was examined by fitting on exponential function (Y=AB^t). The growth pattern in area, production and yield of rice showed an upward trend at state and regional level except in Rayalaseema region which showed a decline in area and production. Telangana region showed highest growth rates in area, production and yield during the study period. Coastal Andhra region showed highest growth rates in terms of area, production and yield next only to Telangana region. In case of sorghum the growth rates of area and production showed a downward trend in all the regions and the state as a whole. The growth of yield in sorghum crop Rayalaseema region was highest during 1970–80 and total period followed by state as a whole and Telangana region.