Abstract
ABSTRACT Rice is the most important crop in India and additionally the hub of food security of the worldwide population. Integrated application of manures and fertilizers played a pivotal role for improvement of soil physico-chemical properties under different cropping systems as well as nutrient accumulation and grain yield in rice. The present investigation was conducted in sandy loam soil at Agronomy Research Farm of Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India during 2018–2019 having sub-humid climate. Field experiment was designed to evaluate the effect of two date of transplanting, which were allotted to main plots and three combinations of nutrient management options allotted for sub plots on rice crop (var. Naveen). Among all the plant parts, leaf showed higher accumulation of nitrogen (3.69, 1.92%), stem showed higher accumulation of both phosphorus (0.43, 0.35%) and potassium (2.59, 2.09%) than other plant parts during vegetative stages, while panicle showed higher accumulation of nitrogen (1.22%), phosphorus (0.28%) during harvesting stages of the rice crop. Significantly higher nitrogen accumulation in different plant parts were optimized under Soil Test Based Fertilizer Recommendation (STBFR) + Green Manure (GM; Sesbania rostrata) (0.99, 0.46, 1.28%) method of nutrient management, while phosphorus (0.10, 0.11, 0.28%) and potassium (1.00, 1.64, 0.33%) accumulation were found to be significantly higher in different plant parts under STBFR + Farm Yard Manure (FYM) method of nutrient management. Thus, early transplanting and application of STBFR + GM/FYM could be recommended for higher nutrient accumulation in rice crop.
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