Effect of Phosphorus and Gibberellic Acid on growth, nodulation and shoot nutrient concentrations of cowpea (Vigna unguiculata (L) Walp), April 2008 PDF Download
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Author: Gabaitire Goitsemang
Publisher:
ISBN:
Category : Phosphorus and Gibberellic acid
Languages : en
Pages :
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Book Description
Author: Gabaitire Goitsemang
Publisher:
ISBN:
Category : Phosphorus and Gibberellic acid
Languages : en
Pages :
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Book Description
Author: Dyremple Barrington Marsh
Publisher:
ISBN:
Category :
Languages : en
Pages : 238
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Author: Kapoor Singh Yadav
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Category :
Languages : en
Pages :
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Author: Alak Mondal
Publisher:
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Category :
Languages : en
Pages : 40
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Author: J. Haag
Publisher:
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Category :
Languages : en
Pages : 127
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Author: SEENAPPA C
Publisher:
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Category :
Languages : en
Pages : 132
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Author: Sabiou Mahamane
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Category :
Languages : en
Pages :
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Book Description
Cowpea (Vigna ungiculata L. Walp) is a major food and fodder legume in poor countries, particularly Sub-Saharan Africa countries. It is generally produced in sandy, acid soils, deficient in phosphorus (P) which severely limits its production. Because processed phosphate fertilizers are expensive and poorly available to farmers, rock phosphate is viewed as a cheap alternative phosphate source. The present study evaluated 696 U.S Core Collection and IITA cowpea accessions for adaptation to low soil P environments and for response to rock phosphate application. Subsequently, organic acid exudation by selected cowpea genotypes as a mechanism for P acquisition from Fe-oxide and Ca bound P was investigated. A low P soil from Nacogdoches pine forest was used to grow plants. There were two P treatments: 0 and 300 mg P/kg of soil as Tahoua (Niger) rock phosphate. At harvest, plant height, shoot and root dry weights were determined and total biomass and shoot-to-root ratios were computed. Shoot P contents of 100 selected accessions were measured. Sixteen accessions reflecting the wide array of responses observed were selected for the organic acid study. Plants were grown in a growth chamber hydroponically with no P and +P nutrient solutions for 3 weeks. Organic acids were collected in a CaCl2-KCl solution. The nature and quantity of the collected organic acids was determined. Cowpea accessions were significantly different in their ability to adapt to Pdeficiency stress and to acquire P from rock phosphate. The parameters most effective in separating the accessions were shoot mass and total biomass. This data will be potentially useful in the selection of cowpea germplasm for (1) adaptation to West African soils of low P fertility, and (2) ability to utilize P from poorly soluble rock phosphate. The predominant organic acid exuded by cowpea roots was a tricarboxylic acid not yet identified. There was surprisingly more exudation of this acid under +P than under -P conditions. Exudation was more highly correlated to roots than to shoots.
Author: D Patil Vijaykumar
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
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Author: Dinesh K. Maheshwari
Publisher: Springer Science & Business Media
ISBN: 3642183573
Category : Science
Languages : en
Pages : 438
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The future of agriculture strongly depends on our ability to enhance productivity without sacrificing long-term production potential. An ecologically and economically sustainable strategy is the application of microorganisms, such as the diverse bacterial species of plant growth promoting bacteria (PGPB). The use of these bio-resources for the enhancement of crop productivity is gaining worldwide importance. Bacteria in Agrobiology: Crop Ecosystems describes the beneficial role of plant growth promoting bacteria with special emphasis on oil yielding crops, cereals, fruits and vegetables. Chapters present studies on various aspects of bacteria-plant interactions, soil-borne and seed-borne diseases associated with food crops such as rice, sesame, peanuts, and horticultural crops. Further reviews describe technologies to produce inoculants, the biocontrol of post harvest pathogens as a suitable alternative to agrochemicals, and the restoration of degraded soils.
Author: Sergey Shabala
Publisher: CABI
ISBN: 1780647298
Category : Science
Languages : en
Pages : 378
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Book Description
Completely updated from the successful first edition, this book provides a timely update on the recent progress in our knowledge of all aspects of plant perception, signalling and adaptation to a variety of environmental stresses. It covers in detail areas such as drought, salinity, waterlogging, oxidative stress, pathogens, and extremes of temperature and pH. This second edition presents detailed and up-to-date research on plant responses to a wide range of stresses Includes new full-colour figures to help illustrate the principles outlined in the text Is written in a clear and accessible format, with descriptive abstracts for each chapter. Written by an international team of experts, this book provides researchers with a better understanding of the major physiological and molecular mechanisms facilitating plant tolerance to adverse environmental factors. This new edition of Plant Stress Physiology is an essential resource for researchers and students of ecology, plant biology, agriculture, agronomy and plant breeding.
