Effect of cereal straw incorporation and zinc sulphate application on soil properties and available nutrients under rice-wheat rotation
2008
Dwivedi, Rama | Srivastava, P.C.
Application of 0, 6.25, 12.5 and 25.0 kg zinc sulphate ha-1 to first year rice crop with or without cyclic incorporation of 1.5, 3.0 and 6.0 t ha- 1 wheat straw for rice and rice straw for wheat crop for two years influenced organic carbon content, available N, available P and available K significantly. EC and pH of soil were not affected. In general, after rice harvest the content of soil organic C was higher than after wheat harvest. Incorporation of straw @ 6.0 t ha-1 with Zn application helped accumulation of available soil N. After two crop cycles, available P content of soil increased significantly with the incorporation of straw @ 3.0 t ha- 1. Available K content in soil increased significantly with the conjunctive use of straw and ZnSO4.
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