Phosphorus Release Characteristics, Forms and Plant Uptake in Alfisols of Deferential P Status PDF Download
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Author: Emal
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Book Description
Author: Emal
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Book Description
Author: Carlos Henriquez
Publisher:
ISBN:
Category :
Languages : en
Pages : 158
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Book Description
The study of the availability of soil phosphorus (P) to crops has been an important issue for years in different agroecosystems around the world. Because of the complex P cycling in soils this has been studied from different points of view. The study of soil P forms has been seen as a possible way to explain many processes and changes occurring in plant-soil interactions. The purpose of this research was to characterize soil P forms under different land uses and evaluate the relationship between different land use areas and the spatial distribution of soil P forms. The study was carried out in Costa Rica on a Typic Hapludand under coffee plantation (Coffea arabica), sugar cane plantation (Saccharum spp.), and secondary forest. A modified Hedley soil P fractionation methodology was used for determining the soil P forms. Means of the relative content of P forms were 0.43% labile-Pi, 6.44% NaOH-Pi, 9.20% HCl-Pi, 32.55% extractable organic P and 51.37% residual-P. Inorganic fertilization was correlated with labile-P, NaOH-Pi, and HCl-Pi forms. In the first experiment the sugar cane yields were correlated with labile-Pi and NaOH-Pi. Organic fertilizer increased the extractable organic P suggesting an accumulation in this form. In the second descriptive study a spatial relationship was found with soil management areas. Sugar cane soil accumulated more P in HCl-Pi, extractable organic P, and residual-Pi forms. Coffee soil had the highest values in labile-Pi and NaOH-Pi that were correlated with the higher rate of fertilizer application. Secondary forest had intermediate values between these two cropped areas. The third experiment showed that under greenhouse conditions P uptake was closely related to labile-Pi and NaOH-Pi suggesting also that a sparingly available P form could be related to P uptake by plants in time. Extractable organic P and residual-P were suggested to act as a sink of the available P forms. It is concluded that under a sustainable crop production framework the adequate input of P is necessary in order to maintain the adequate nutrient supply through time.
Author: Pedro A. Sanchez
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685
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Book Description
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1088
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Book Description
Author: Philip J. White
Publisher: Springer Science & Business Media
ISBN: 1402084358
Category : Science
Languages : en
Pages : 296
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Book Description
Phosphorus (P) is an essential macronutrient for plant growth. It is as phosphate that plants take up P from the soil solution. Since little phosphate is available to plants in most soils, plants have evolved a range of mechanisms to acquire and use P efficiently – including the development of symbiotic relationships that help them access sources of phosphorus beyond the plant’s own range. At the same time, in agricultural systems, applications of inorganic phosphate fertilizers aimed at overcoming phosphate limitation are unsustainable and can cause pollution. This latest volume in Springer’s Plant Ecophysiology series takes an in-depth look at these diverse plant-phosphorus interactions in natural and agricultural environments, presenting a series of critical reviews on the current status of research. In particular, the book presents a wealth of information on the genetic and phenotypic variation in natural plant ecosystems adapted to low P availability, which could be of particular relevance to developing new crop varieties with enhanced abilities to grow under P-limiting conditions. The book provides a valuable reference material for graduates and research scientists working in the field of plant-phosphorus interactions, as well as for those working in plant breeding and sustainable agricultural development.
Author: E. Velazquez
Publisher: Springer Science & Business Media
ISBN: 1402057652
Category : Technology & Engineering
Languages : en
Pages : 352
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Book Description
In 2002, sixty international specialists met to discuss problems of high P-unavailability as a soil nutrient for crops, and the hazards of increased phosphate input to aquatic habitats from industrial and mining activities, sewage disposal, detergents, and other sources. Among the presentations were updated solutions to enhance P-uptake by plants, bioremediation potential in the rehabilitation of ecosystems, taxonomic characterization interactions with mycorrizae, the physiological and molecular basis of PSM, and more.
Author: Mohammad Pessarakli
Publisher: CRC Press
ISBN: 9780824746728
Category : Science
Languages : en
Pages : 1282
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Book Description
Detailing interrelated topics, this work addresses issues and concerns related to plant and crop stress. This edition includes information on pH stress, temperature stress, water-deficit conditions, carotenoids and stress, light stress, pollution stress, agrichemical stress, oxidative damage to proteins, UV-B induced stress and abiotic stress tolerance.
Author: Achim Dobermann
Publisher: Int. Rice Res. Inst.
ISBN: 9810427425
Category : Nutrition
Languages : en
Pages : 203
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Book Description
Rice ecosystems; Nutrient management; Mineral deficiencies; Mineral toxicities; Tools and information.
Author: Geoffrey Michael Gadd
Publisher: Cambridge University Press
ISBN: 9780521845793
Category : Medical
Languages : en
Pages : 504
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Book Description
This book promotes further understanding of the contribution that fungi make to the biogeochemical cycling of elements, the chemical and biological mechanisms involved, and their environmental and biotechnological significance.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1254
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Book Description
