Uptake of NPK, Availability of NPK and Quality Parameters of Bt Cotton (Gossypium hirsutumL.) as Influenced by Different Bio-fertilizers andIn-situGreen Manuring under Irrigation
| Autor: | K Thimmareddy, B.K. Desai, S.N. Vinoda Kumar |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | International Journal of Agriculture, Environment and Biotechnology. 6:623 |
| ISSN: | 2230-732X 0974-1712 |
| DOI: | 10.5958/j.2230-732x.6.4.041 |
| Popis: | A field experiment was carried out during kharif season of 2009–2010 at the Agriculture College Farm, Raichur, Karnataka (India) to study the response of Bt cotton to different fertilizer levels, bio-fertilizers and in-situ green manuring under irrigation. With respect to uptake and availability of NPK, application of sunnhemp in-situ green manuring found significantly higher N (128.27 kg ha−1 and 206.43 kg ha−1, respectively), P (30.63 kg ha−1 and 38.43 kg ha−1, respectively) and K (142.33 kg ha−1 and 342.14 kg ha−1, respectively) over no green manuring. Among different fertilizer levels and bio-fertilizers, 150% recommended dose of fertilizers (RDF) recorded significantly higher uptake and availability of N (132.46 kg ha−1 and 212.48 kg ha−1, respectively), P (32.44 kg ha−1 and 39.21 kg ha−1, respectively) and K (147.21 kg ha−1 and 353.29 kg ha−1, respectively). Significantly higher ginning percentage and lint index were observed with sunnhemp in-situ green manuring (35.81 and 4.99, respectively) over no green manuring. Mean fibre length of Bt cotton was not significantly influenced by both use of in-situ green manuring and combined use of inorganic nutrients and bio-fertilizers. |
| Databáze: | OpenAIRE |
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