under split plot design taking four nutrient management practices including combination of recommended dose of fertilizer, application of ZnSO 4 @ 25 kg ha -1 , boron @ 1 kg ha -1 and biofertliser along with four genotypes including three hybrids and one local variety evaluated that application of recommended dose of fertilizer with dose of 80−60−80 kg N, P 2 O 5 , K 2 O+ZnSO 4 @ 25 kg ha -1 recorded in higher plant height (160.3 cm), number of leaves (31.1), leaf area index (3.549) and dry matter accumulation (128.90 g plant -1 ) with higher crop growth rate (12.343 g m -2 d -1 ) as compared to other and also reported higher seed (2.17 t ha -1 ), Stover (4.88 t ha -1 ) and oil (0.91 t ha -1 ) yield, which was followed by application of recommended dose of fertilizer+boron 1 k ha -1 . Hybrid Super-48 recorded higher growth and yield attributing characters as compared to others with plant height, number of leaves, leaf area index, dry matter accumulation, crop growth rate with corresponding values of 157.8 cm, 23.0, 3.572, 133.22 g plant -1 and 13.177 g d -1 m -2 , respectively. Application of ZnSO 4 25 kg ha -1 in hybrid Super-48 recorded the highest seed yield and oil due application of sulphur which was followed by application of boron 1 kg ha -1 .
and Technology in summer 2016 and 2017. The experiment was laid out in split plot design with three replications under irrigated aerobic condition. Treatments comprising of five establishment methods like direct seeding in solid rows 20 cm apart (E1), direct seeding by punji method (dibbling) at 20cm x 20cm (E2), transplanting (under un puddle un flooded condition i.e. aerobic) with 1 seedling at 2 leaf stage at 20 cm x 20 cm (E3), 2-3 seedlings at 4 leaf stage at 20 cm x 10 cm (E4) and 2-3 seedlings at 4 leaf stage at 20 cm x 20 cm (E5), in main plots, and four nitrogen level (N1-30, N2-60, N3-90 and N4-120kg N ha -1 )in sub plots. Result reveled that aerobic rice adapted with significant superiority when 2-3 seedlings at 4 leaf stage were transplanted in square geometry of 20 cm x 20 cm (E5) on pulverised soil after a pre-soaking irrigation. The method recorded the highest yield attributing characters like EBT/ hill, panicle length, filled grains per panicle ,1000 grain weight and harvest index contributing to significantly higher grain yield of 4760 and 5142 kg/ha in the year 2016 and 2017, respectively. The corresponding straw yield was 5626 and 5938 kg/ha. Yields was found to increase with N-levels and was associated with higher values of yield attributing characters. The same treatment also registered highest net return (Rs.31663and Rs. 39675.) and B: C ratio (1.75an 1.95) in 2016 and 2017, respectively. Two factor interactions between methods and N-levels was also significant and significantly the highest grain and straw yield was recorded when the crop was transplanted under E5 treatment at 120kg N/ha. Functional relationship of nitrogen was established and optimum economic dose of nitrogen was found to be 110 and 118 kg N/ha in 2016 and 2017, respectively with corresponding optimum yield of 4546 and 5307 kg/ha. The resultant quadratic equation in 2016 was y= -0.252x 2 + 5637 + 1402 and in 2017 was y= 0.269 X 2 + 6429 + 1467.
Rice is the most important cereal crop and staple food consumed by more than half of the world's human population. Based on the presence of aroma, rice is categorized as the aromatic and non-aromatic rice. Aromatic rice is an important food grain crop and preferred by majority of human population. Most of the aromatic rice (short and long grain cultivars) varieties are low yielding, exhibiting inferior agronomic performance, highly sensitive to the environmental condition. Among several management practices, nutrient management is of utmost importance for its role not only in growth and development of the crop but also the maintenance of soil health and quality of the produce. At present, the farmers cultivate such premium aromatic rice following chemical-based agricultural practices which has increased productivity with inferior grain quality, degraded soil health and increased environmental pollution. Thus, it has been realized that organic nutrient management in aromatic rice is to be given paramount importance so as to attain sustainability in production and high economic return with better quality of produce. Different sources of organic manures seemed to have differential effects not only on the soil health but also on the quality of aromatic rice. Most of the cases poultry manure is considered to be one of the best organic sources when it is used after one season. Besides, other organic sources like FYM and concentrated manure are also better in sustaining crop productivity, maintaining soil health and reducing environmental pollution as compared to that with chemical farming.
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