Optimizing Crop Productivity and Profitability through Integrated Nutrient Management in low land Rice

Author: Manju Bhargavi B., Swapna N., Balaji Naik. B., Ravinder J. and Soundarya B.

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Abstract

The most rational approach for maintaining long-term soil fertility and productivity is the integrated nutrient supply system. To optimise the yield of rice under different inorganic and organic combinations of nutrients that also leave positive effects on soil health, a field experiment was conducted at the Regional Sugarcane and Rice Research Station, Rudrur, during kharif season of 2021 to assess the effect of different nutrient management practices on yield and yield parameters of rice. The experiment was laid out in randomized block design, with three replication and seven treatments. The results revealed among the different nutrient combinations tested, the nutrient supplied based on STCR equation in addition to 5t FYM blended with microbial consortium (T7) recorded significantly more productive tillers (28.0), number of grains panicle-1 (262.0) and test weight (15.1 gr) when compared to control (no fertilizer). However, it was on par with T4 and T6 with respect to the productive tillers, T3, T4 & T6 with respect to no. of grains panicle-1 and T2, T3, T4 & T6 in terms of test weight. Further T7 treatment was recorded highest grain yield of 5418 kg ha-1. However, it was comparable with T4 and significantly superior over rest of the treatments. This trend was also reflected in terms of net returns. The highest B:C ratio was recorded with T7 treatment. However, it comparable with T3, T4, T5 & T6 and significantly more over T1 & T2. The integrated use of NPK fertilizer along with FYM + Microbial consortium based on STCR approach not only gave higher rice yield but also improve and sustain the soil fertility. The observation of the data revels that the performance of STCR with 5t FYM + MC for the yield target 75q ha-1 (T7) and RDF+10 t FYM, in general was better over rest of the treatments in increasing yield parameters, yield and economics of rice.

Keywords

Rice, Integrated nutrient management, Azospirillum, STCR, FYM, Yield

Conclusion

The outcomes of this study indicated that the application of fertilizers based on soil test value (STCR approach) along with organic manures significantly improved the growth, yield attributes and yield compared to chemical fertilizers alone of lowland rice. The observation of the data revels that the performance of STCR dose with 5t FYM + MC for the yield target 75q ha-1 (T7) and RDF + 10 t FYM, in general was better over rest of the treatments in increasing yield parameters, yield and economics of rice.

References

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How to cite this article

Manju Bhargavi B., Swapna N., Balaji Naik. B., Ravinder J. and Soundarya B. (2023). Optimizing Crop Productivity and Profitability through Integrated Nutrient Management in low land Rice. Biological Forum – An International Journal, 15(1): 710-713.