Influence of integrated Nutrient Management in Summer Rice (Oryza sativa L.) under Terai Zone of West Bengal

Author: Senjit Singh Ashem and Ashis Kumar Singha Roy

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Abstract

Use of inorganic fertilizers have increased the production of rice but causes various detrimental effects on physical and chemical properties of soils and ecological pollutions. Therefore, conjunctive use of organic and inorganic sources of nutrients helps in sustaining productivity and biological health of soil and achieves a part of chemical fertilizers of crop. A field experiment was carried out at Uttar Banga Krishi Viswavidyalaya, Cooch Behar, West Bengal during two consecutive summer season of 2018and 2019 to evaluate the effect of judicious use of inorganic fertilizers, organic manures and zinc on summer rice (cv. Gotra Bidhan-1). Out of different nutrient management practices, treatment receiving 75% RDN through fertilizer +25% RDN through vermicompost + 25 kg ZnSO4ha-1 registered significantly the highest yield components and grain yield (5.10 t ha-1). The total uptake of N, P, K and Zn nutrients by crop was remarkably increased with the treatment receiving 75% RDN through fertilizer + 25% RDN through vermicompost + 25 kg ZnSO4 ha-1.Integrated nutrient management enhanced the organic carbon and available N, P, K and Zn contents in the soil. Significant variation in N, P, K and Zn content of soil under various treatments could be observed after harvest of summer rice. The maximum soil available N, P, K and Zn were noticed with the 50% RDN through fertilizer + 50% RDN through vermicompost + 25 kg ZnSO4 ha-1. The highest net return (Rs. 40560 ha-1) and benefit: cost (1.80) ratio was achieved under the treatment, where 75% RDN was applied through fertilizer +25% RDN through vermicompost + 25 kg ZnSO4 ha-1.

Keywords

Summer rice, integrated nutrient management, yield, economics

Conclusion

From the above study, it can be concluded that significantly higher grain yield and nutrient uptake could be obtained with the application of 75% RDN through fertilizer + 25% RDN through vermicompost along with 25 kg ZnSO4 ha-1 which was closely followed by 75% RDN through fertilizer + 25% RDN through FYM along with 25 kg ZnSO4 ha-1. Application of 75% RDN through fertilizer + 25% RDN through vermicompost along with 25 kg ZnSO4 ha-1 in summer rice also showed higher net return and B:C ratio interai region of West Bengal.

References

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How to cite this article

Senjit Singh Ashem and Ashis Kumar Singha Roy (2022). Influence of integrated Nutrient Management in Summer Rice (Oryza sativa L.) under Terai Zone of West Bengal. Biological Forum – An International Journal, 14(4): 357-362.