the research gap lies in the limited understanding of the conjoint application of coated urea and organic manure on rice cultivation, particularly regarding their combined effects on growth, productivity, profitability, and nutrient acquisition. Addressing this gap could lead to more efficient and sustainable rice cultivation practices.
DOI:
https://doi.org/10.59797/ija.v69i4.5506Abstract
A field experiment was conducted at M.S Swaminathan School of Agriculture's post-graduate research farm in Gajapati, Odisha, during the rabi season of 2021-22 and 2022-23 to investigate the influence of nutrient omission plot technique (NOPT) based nutrient management on performance of rabi rice. The experiment was layout in randomized complete block design with three replications. The treatment comprised of seven nutrient management practices viz., T1: N120P60K60Zn05S25, T2: N0P60K60Zn05S25, T3: N120P0K60Zn05S25, T4: N120P60K0Zn05S25, T5: N120P60K60Zn0S25, T6: N120P60K60Zn05S0 and T7: absolute control. The results showed that NOPT based nutrient application significantly improved the growth, yield, and nutrient uptake of rabi rice. Notably, the treatment applying 100% NPKZnS exhibited superior outcomes in terms of growth, yield, and nutrient uptake compared to other treatments. These findings highlight the importance of applying primary nutrients to achieve optimal rice yields. Additionally, the inclusion of micronutrients such as zinc and sulphur can further enhance rice productivity and improve grain quality. Based on the results of this study, it is recommended to adopt a comprehensive nutrient management approach in rice cultivation, ensuring the adequate supply of primary nutrients while considering the beneficial role of micronutrients. This can help optimize growth, yield, and nutrient uptake, leading to improved agricultural productivity and sustainability.
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