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Varietal replacement and rice productivity in Palakkad plain agroecological zone of Kerala Rose Neetha C D* Assistant Professor (Agricultural Economics), Division of Social Science, Regional Agricultural Research Station, Kerala Agricultural University, Pattambi, Palakkad, 679303 *Corresponding author email: neetha.cd@kau.in
Online Published on 26 February, 2024. Abstract The gains from green revolution era have helped the nation to become the second largest global producer of rice. Currently, the rice yield plateauing trend is causing concern to the nation in achieving the future food grain demand projections. The replacement of improved varieties with newer ones, termed as varietal replacement, is critical in increasing the productivity. This study is an attempt to estimate the varietal replacement rate together with its effect on productivity and to examine the trend in rice production and productivity. The study was based both primary and secondary data. The information collected from 411 farm households in Palakkad plain agroecological zone is utilized for estimating the varietal replacement rate inversely in terms of weighted average age (WAA) and its effect on yield. The trend analysis was based on the secondary data on rice production and productivity data for a period of 60 years. The rice production and productivity trends in Kerala state as well as Palakkad district indicate stagnation tendency. The estimated WAA of 26.41 years confirms the existence of very low varietal replacement rate. The effect of WAA on yield was found to be negative at the rate of 23.85 Kg/Ha. The proper policies for refurbishment of public seed systems together with involvement of farmers and private firms in seed multiplication and distribution is critical to transfer the varietal gains to farmers and thereby ensuring better rice productivity. Top Keywords Varietal replacement, Weighted average age (WAA), Log-linear regression, Rice productivity. Top | |
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