STUDIES ON LEVELS AND TIME OF APPLICATION OF NITROGEN ON PERFORMANCE OF RICE UNDER AEROBIC CONDITION
KrishiKosh
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Title |
STUDIES ON LEVELS AND TIME OF APPLICATION OF NITROGEN ON PERFORMANCE OF RICE UNDER AEROBIC CONDITION
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Creator |
T G, AMRUTHA
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Contributor |
H M, JAYADEVA
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Subject |
biological phenomena, bacteria, genes, proteins, pcr, acidity, fruits, enzymes, rna, gene expression
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Description |
A field experiment was conducted during Kharif 2012, GKVK, Bengaluru in red sandy loam soil (pH 6.1; OC 0.60 %) with medium available nitrogen (290.41 kg ha-1), phosphorous (43.01 kg ha-1) and potassium (253.34 kg ha-1) and experiment was laid out in factorial RCBD with ten treatments and replicated thrice. The variety used was MAS 946-1. The results revealed that application of nitrogen at 120 kg ha-1 recorded significantly higher plant height (42.33 cm), leaf area (2864 cm2 plant-1), total dry matter (106.22 g plant-1), higher productive tillers plant-1 (22.77), test weight (22.49) and total number of filled grains panicle-1 (89.80) which resulted in higher grain (5378 kg ha-1) and straw yield (7545 kg ha-1) as compared to other levels of nitrogen and accounted 39.25 per cent higher grain yield of rice as compared to nitrogen at 100 kg ha-1. Among the time of application of nitrogen, application of nitrogen as 50 % at sowing + 25 % at tillering (25 DAS) + 25 % at panicle initiation (50 DAS) recorded significantly higher plant height (38.57 cm), leaf area (2454 cm2 plant-1), total dry matter (89.50 g plant-1), higher productive tillers plant-1 (18.41), test weight (21.75 g) and total number of filled grains panicle-1 (70.65) which resulted in higher grain (4318 kg ha-1) and straw yield (6847 kg ha-1) and accounted 19.84 per cent higher grain yield of rice over application of nitrogen as 10 % at sowing + 40 % at tillering (25 DAS) + 25 % at 50 DAS + 25 % at (75 DAS). Application of nitrogen at 120 kg ha-1 with application of nitrogen as 50 % at sowing + 25 % at tillering (25 DAS) + 25 % at panicle initiation (50 DAS) recorded higher net income (Rs. 69517 and 55205 ha-1, respectively) and B:C ratio (2.12 and 1.69, respectively). |
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Date |
2016-10-25T11:42:21Z
2016-10-25T11:42:21Z 2014-07-08 |
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Type |
Thesis
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Identifier |
TH-10876
http://krishikosh.egranth.ac.in/handle/1/81756 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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