STUDIES ON INTEGRATED NUTRIENT MANAGEMENT UNDER SYSTEM OF RICE INTENSIFICATION
KrishiKosh
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Title |
STUDIES ON INTEGRATED NUTRIENT MANAGEMENT UNDER SYSTEM OF RICE INTENSIFICATION
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Creator |
SOWMYA, CH
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Contributor |
VENKATA RAMANA, M
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Subject |
STUDIES, INTEGRATED, NUTRIENT, MANAGEMENT, UNDER, SYSTEM, RICE, INTENSIFICATION
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Description |
An investigation entitled “Studies on integrated nutrient management under System of Rice Intensification” was conducted during kharif 2006-0’7 at Directorate of Rice Research Farm, Rajendranagar, Hyderabad. The experiment was conducted on clayey vertisol of medium fertility with two methods of cultivation (SRI and NTP), two cultivars (PSD-1 and BPT-5204) and six nutrient management options (5 t FYM ha-1, 10 t FYM ha-1, 50 % RDF, 100 % RDF, 5 t FYM ha-1 + 50 % RDF and 10 t FYM ha-1 + 50 % RDF) in split-split plot design with three replications. Crop growth measured as plant height, tiller number m-2 and total dry matter production at different stages, yield components viz., panicles m-2 and test weight as well as straw yield were significantly higher under NTP method compared to SRI. Nevertheless, SRI recorded an additional grain yield of 276 kg ha-1 over NTP method due to more number of filled grains panicle-1 and better partitioning (HI). Nutrient uptake (N, P & K) by crop did not differ between the methods of cultivation at flowering and harvest stages. The hybrid PSD-1 performed better in terms of growth and development of the crop, yield components resulting in significantly higher grain yield (4835 kg ha- 1) over BPT-5204 (4453 kg ha-1). Nutrient uptake was also significantly greater with PSD-1 over BPT-5204. Among the different nutrient management options, integrated use of 10 t FYM ha-1 along with 50 % RDF gave significantly higher grain (5595 kg ha-1) and straw yield (6700 kg ha-1) as well as nutrient uptake (N: 78.93, 42.47; P: 18.94, 12.82; K: 21.83, 88.73 kg ha-1 by grain and straw respectively) over rest of the treatments. This was followed by 5 t FYM ha-1 + 50 % RDF and 100 % RDF alone treatments. The comparable grain yields with these treatments indicates that 50 % RDF can be substituted with the application of 5 t FYM ha-1. The two factor interaction revealed similar performance of cultivars under SRI. However, the hybrid PSD-1 gave significantly higher grain yield compared to that of BPT-5204 under NTP. Application of 10 t FYM ha-1 + 50 % RDF under both the methods of cultivation as well as with both the cultivars resulted in higher grain yield over other nutrient management options. Among all the treatment combinations, the hybrid PSD-1 with 10 t FYM ha-1 + 50 % RDF under SRI recorded higher grain yield (5979 kg ha-1) followed by the cultivar BPT-5204 with the same nutrient option and method of cultivation (5769 kg ha-1). In terms of economics, the cultivar BPT-5204 with integrated treatments (10 t/5 t FYM ha-1 + 50 % RDF) gave respectively higher gross (49,254; 46,500 Rs. ha- 1) and net returns (34,581; 33,627 Rs. ha-1) but the benefit-cost ratio (2.61) was higher with 5 t FYM ha-1 + 50 % RDF treatment because of higher cost incurred on FYM with 10 t FYM ha-1 + 50 % RDF treatment (B:C ratio of 2.35) |
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Date |
2016-08-08T14:19:50Z
2016-08-08T14:19:50Z 2008 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/71544
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Language |
en
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Relation |
D8175;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD
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