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Arun, Anjana
- Effect of NPK Uptake at Different Growth Stages of Wheat (Triticum aestivum L.) for Yield Maximization
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1 Regional Research Station, Agwanpur, Saharsa (Bihar), IN
1 Regional Research Station, Agwanpur, Saharsa (Bihar), IN
Source
An Asian Journal of Soil Science, Vol 9, No 2 (2014), Pagination: 265-270Abstract
Maximum N uptake in wheat crop was obtained with successive increase in level of fertilizer, plant population and organic manure application. The maximum N-uptake of 137.64 kg/ha was recorded at harvest with the application of highest does of nitrogen i.e., 180 kg/ha. Application of higher level of fertilizer and organic manure and higher plant population increase the P uptake. The maximum phosphorus uptake of 17.19 kg/ha were recorded at harvest with the application of 75 kg phosphorus/ha. The same way K uptake was also observed to increase with increase in level of fertilizer, plant population and organic manure application.Keywords
NPK Uptake, Growth Stages, Wheat, Yield.- Sustainable Way for Enhancing Phosphorus Efficiency in Agricultural Soils through Phosphate Solubilizing Microbes
Abstract Views :133 |
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1 Regional Research Station, Agwanpur, Saharsa (Bihar), IN
2 Department of Soil Science and Agricultural Chemistry, Mandan Bharti Agriculture College, Agwanpur, Saharsa (Bihar), IN
1 Regional Research Station, Agwanpur, Saharsa (Bihar), IN
2 Department of Soil Science and Agricultural Chemistry, Mandan Bharti Agriculture College, Agwanpur, Saharsa (Bihar), IN
Source
An Asian Journal of Soil Science, Vol 9, No 2 (2014), Pagination: 300-310Abstract
Phosphorus is the second important key element after nitrogen as a nutrient in terms of quantitative plant requirement. Although phosphorus is abundant in soils (organic and inorganic forms), its availability is restricted as it occurs mostly in insoluble forms. The phosphorus content in soil is about 0.05 per cent (w/w) but only 0.1 per cent of the total phosphorus is available to plant because of poor solubility and its fixation in every type of soil. An adequate supply of phosphorus during early phase of plant development is important for laying down the primordia of plant parts. It plays significant role in ischolar_main ramification, thereby imparting vitality to plant. It also helps in seed formation and in early maturation of crops. Poor availability or deficiency of phosphorus markedly reduces plant size and growth. Phosphorus accounts about 0.2 - 0.8 per cent of the plant dry weight. To satisfy crop requirements, phosphorus is usually added to soil as chemical fertilizer, however, synthesis of chemical fertilizer is highly energy intensive processes, and has long term impacts on the environment in terms of eutrophication, soil fertility depletion, carbon footprint. Moreover, plants use only a small amount of phosphorus, because about 80-90 per cent of added phosphorus is precipitated by metal-cation complexes, and rapidly fixed in soils. Such environmental concerns have led to the search for sustainable way of phosphorus nutrition of crops. In this regards phosphate-solubilizing microorganisms have been seen as best eco-friendly means for phosphorus nutrition of crop. Although, several bacterial (Pseudomonas and Bacilli) and fungal strains (Aspergillus and Penicillium) have been identified as PSM. Their performance under in situ conditions is not reliable and therefore, needs to be improved by using co-inoculation techniques. This review focuses on the diversity of PSM, mechanism of P solubilization, role of various phosphatase, impact of various factors on solubilization, the present and future scenario of their use and potential for application of this knowledge in managing a sustainable agricultural system.Keywords
Soil Phosphorus, PSM, Solubilization, Biodiversity, Biofertilizers, Siderophores, TCP, Organic Acids.- Ameliorating the Effects of Climate Change through Organic Agriculture System
Abstract Views :364 |
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Authors
Affiliations
1 Regional Research Station, Agwanpur, Saharsa (Bihar), IN
1 Regional Research Station, Agwanpur, Saharsa (Bihar), IN