Title: Integrated nutrient management for rice-wheat cropping system in reclaimed sodic soil
Abstract: A field experiment was initiated at the Central Soil Salinity Research Institute, Karnal from 1994 to 2003 on the use of nitrogen, phosphorus and potassium separately and in combination with organic manure (green manuring and farm yard manure) in rice-wheat cropping system to assess their impact on soil fertility, yield of rice and wheat and economic return of the crops. On the basis of 10 years data, application of recommended doses of NPK (120+26+42 kg ha−1) with green manuring or farm yard manure (FYM) increased significantly over the recommended dose of NPK. The mean yield of rice was 5.44, 6.38 and 6.25 t ha−1 at the application of the recommended doses of NPK alone and its combination with green manuring and FYM, respectively during 1994–2003. Addition of organic manure has increased rice yield by 16 per cent as compared to the recommended doses of NPK alone. The maximum yield of rice was obtained with green manuring treatment. Half doses of recommended NPK (60+13+21 kg ha−1) with green manuring or FYM were yielded more or less equal to that of yield obtained by recommended doses of NPK. The green manure or FYM has increased N, P, K, organic carbon and micronutrients in the soil significantly and reduced soil pH which ultimately benefited soil productivity and crop yields.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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