Site specific nutrient management approach for enhanced yield realisation in rice - a case study

Deepa Thomas, Veena Vigheneswaran, A. K. Sreelatha

Abstract


The existing practice of application of general doses of NPK fertilizers to a crop without consideration of soil fertility level and crop response, needs new dimension, as it forms the major reason for low productivity. A project was implemented during 2018-19 and 2019-20 to formulate scientific package for higher yield realization in major rice tracts of Ernakulam district of Kerala, India under Good Agricultural Practices. In this project the present Package of Practice recommendations of Kerala Agricultural University for manures and fertilisers was compared with fertilizer dose providing major, secondary and micronutrients and a control with farmers’ practice of no FYM and lime, but recommended dose of NPK. Piravom, Poothrikka and Mulamthuruthy blocks of Ernakulam district were adopted for trial and on analysis, it was found that the soils were acidic, inherently poor in bases and other essential plant nutrients. Addition of manures, lime, NPK fertilisers, magnesium sulphate and spraying of multi nutrient mixture “Sampoorna’’ had significant effect on the number of grains per panicle and grain filling. This has resulted in an average yield increase of more than 30 per cent over farmers’ practice and more than 20 per cent over the present Package of Practices recommendation in all the three locations.

Keywords


Rice yield, secondary and micronutrient deficiencies

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References


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A KAU publication [CODEN: JTAGEI; ISSN 0971-636X; eISSN 0973-5399]