National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
This study investigates how nutrient management influences soil phosphorus (P) fractions and rice yield in a rice–wheat system on Vertisols under Indian conditions. We evaluated STCR-based fertilizer prescriptions, with and without farmyard manure (FYM), across yield-target scenarios in a randomized block design with four replications and five treatments. Soil was fractionated to quantify major inorganic P pools (Ca–P, Red–P, Fe–P, Al–P, Saloid–P/RS–P) and total P, while crop tissues and grain yields provided P uptake data; P balance was estimated to assess soil fertility status under different P regimes. Results show that STCR-based doses targeting 22 q ha−1 consistently yielded the highest grain yields and total P uptake, with concomitant increases in Ca–P and Red–P pools. FYM enhanced nutrient-use efficiency and boosted specific P fractions, though FYM–fertilizer interactions varied by treatment. Across fractions, total P and its components rose with cumulative P input, aligning with improved P availability and uptake in rice and subsequent wheat. The Ca–P pool dominated inorganic P across Vertisols, with Red–P, Fe–P, Al–P, and RS–P contributing variably; their distribution was modulated by soil chemistry and fertilizer history. Regression analyses identified Red–P as the strongest predictor of grain yield, followed by Saloid–P and available P, while Total–P explained less variation. Positive P balances indicated sustained P supply under STCR strategies, though regional and long-term validations are recommended to refine recommendations for resource-limited farmers, including economic analyses and integration with soil testing and organic amendments to optimize P partitioning, yield targets, and soil fertility in Indian Vertisols.
Akiyama, K.; Matsuzaki, K.-I.; Hayashi, H. Plant sesquiterpenes induce hyphal branching in arbuscular mycorrhizal fungi. Nature 2005, 435, 824–827.
Barla, S. Integrated Nutrient Management In Rice-Wheat Cropping System (Doctoral dissertation, Birsa Agricultural University; Ranchi).
Bird J. A., Horwath W. R., Eagle A. J., Van Kessel C. 2001. Immobilization of fertilizer nitrogen in rice: effects of straw management practices. Soil Sci. Soc. America 65, 1143–1152.
Chang, S.C. and Jackson, M.L. 1957. Fractionation of soil phosphorus. Soil Science 84:133-144.
Choudhary, M. 2007. Studies on Integrated Phosphorus Management in Maize (Zea mays L.) on Typic Haplustept (Doctoral dissertation, Maharana Pratap University of Agriculture and Technology).
Nagumo, T., Tajima, S., Chikushi, S., & Yamashita, A. 2013. Phosphorus balance and soil phosphorus status in paddy rice fields with various fertilizer practices. Plant Production Science, 16(1), 69-76.
Prakash Bhanu, M. Response of low land rice (oryza sativa l.) to nitrogen and phosphorus levels in alfisols (doctoral dissertation, acharya ng ranga agricultural university rajendranagar, Hyderabad).
Sawargaonkar, G.L., Rakesh, S., Kale, S., Kamdi, P.J., Karanam, P., Pasumarthi, R., Choudhari, P., Singh, A., Patil, M., Murali, G. and Singh, R., 2026. Regenerative Rice Farming for Sustaining Productivity, Reducing Energy Demand, and Methane Emissions in India: A Comprehensive Review. Results in Engineering, p.109197.
Sepehya, S. 2011. Long-term effect of integrated nutrient management on dynamics of nitrogen, phosphorus and potassium in rice-wheat system.
Sharma SP, Singh MV, Subehia SK, Jain PK, Kaushal V and Verma TS. 2005. Long term effect of fertilizer, manure and lime application on the changes in soil quality, crop productivity and sustainability of maize-wheat system in alfisol of North Himalaya. Research Bulletin No.2. AICRP on Long-term Fertilizer Experiments, IISS, Bhopal (M.P) and Department of Soils, CSK HPKV, Palampur, H.P. pp 1-88
Verma S. 2002. Studies on long-term effects of chemical fertilizers and amendments on phosphorus dynamics and its budgeting in wet temperate zone soils of Western Himalayas. M.Sc. Thesis, Department of Soil Science, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, India
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