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Effect of Integrated Nutrient Management on Nutrient uptake and Economics in Maize under different Microclimatic Regimes

Author: Rinjumoni Dutta, Tapan Gogoi, A.K. Sarmah and K. Kurmi

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Abstract

A field experiment was conducted at Assam Agricultural University, Jorhat during summer season of 2020 and 2021 with a view to study the effect of microclimatic regime and integrated nutrient management in maize and also the nutrient uptake by the crop and its availability in soil after harvest. The treatments consisted of three microclimatic regimes viz., M1: 15th February, M2: 1st March and M3: 15th March and four INM practices viz., N1: 100% RDF (60-40-40 kg/ha) N2: 75% of RDN as urea + 25% RDN as vermicompost, N3: 75% of RDN as urea + 25% RDN as FYM and N4: 75% of RDN as urea + 25 % RDN as enriched compost. Experimental findings revealed that highest cob yield obtained in crop sown on 15th March which was at par with 1st March sowing in both the years. Kernel yield and stover yield also followed the same trend. Among the different integrated nutrient management practices application of 75 % of RDN as urea + 25 % RDN as enriched compost recorded highest cob yield, kernel yield and stover yield than RDF, but remain at par with 75 % of RDN as urea + 25 % RDN as vermicompost . The uptake of N, P, K by kernel and stover of maize and total uptake were also highest in 15th March sowing in both the years. Among the INM treatments, the highest N, P and K uptake by kernel, stover and their total uptake were recorded under the treatment 75 % of RDN through urea + 25 % RDN as enriched compost in both the years which remains at par with 75 % of RDN through urea + 25 % RDN as vermicompost. The highest gross return, net return were found in crop sown on 15th March with application of 75 % of RDN through urea + 25 % RDN as enriched compost.

Keywords

Maize, microclimate, INM, nutrient uptake

Conclusion

From the two year study it can be concluded that maize crop sown on 15th March with 75 % of RDN as urea + 25 % RDN as enriched compost is beneficial in Assam condition.

References

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How to cite this article

Rinjumoni Dutta, Tapan Gogoi, A.K. Sarmah and K. Kurmi (2023). Effect of Integrated Nutrient Management on Nutrient uptake and Economics in Maize under different Microclimatic Regimes. Biological Forum – An International Journal, 15(5a): 65-70.