Influence of promising rice (Oryza sativa) varieties and nutrient-management practices on micronutrient biofortification and soil fertility in Eastern Himalayas
2018
Harish, M.N. | Choudhary, Anil K. | Singh, Y.V. | Pooniya, Vijay | Das, Anup | Varatharajan, T.
An experiment was conducted during the rainy season (kharif) of 2016 at Barapani, Meghalaya, to study the influence of promising rice (Oryza sativa L.) varieties and nutrient-management practices on plant nutrient acquisition and soil fertility. The experiment was laid out in split-plot design, replicated thrice, consisting 12 treatment combinations, viz. 4 nutrient-management practices [100% organic, 100% inorganic recommended dose of fertilizer (RDF), integrated nutrient management (INM) (50% RDF + 50% FYM) and control] in main plot, and 3 promising rice varieties [‘Shahsarang 1’, ‘Lumpnah’ and ‘Megha’ Semi-Aromatic 2′] in subplots. The results showed that rice grain yield was significantly higher in INM practice, followed by inorganic and organic practice. Among the varieties, grain yield was significantly higher in ‘Shahsarang 1’ followed by ‘Lumpnah’ and ‘Megha’ SA 2. The INM practice also resulted in highest Fe, Mn, Cu content in rice grains, while the organic practice showed the highest grain Zn. Among the varieties, ‘Megha SA 2’ had highest grain Fe, Mn and Zn content, while ‘Shahsarang 1’ exhibited the highest grain Cu. Micronutrient uptake in rice grains followed the similar trend as that of nutrient-management practices and rice varieties. There was an improvement in available NPK over initial status with higher available NPK in INM practice and higher soil organic carbon in organic practice.
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