Download or read book Some Factors Influencing the Dissolution of Phosphate Rock Fertilizers in Soil written by Isaac Atta Kwadzo Kanabo and published by . This book was released on 1987 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Influencing the Dissolution of Phosphate Rock written by James Stephen Robinson and published by . This book was released on 1991 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of Phosphate Rock Materials as Direct application Phosphate Fertilizers with Particular Reference to Gafsa Rock written by COMPAGNIE DES PHOSPHATES DE GAFSA (Tunis) and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dissolution in soil and factors affecting dissolution; Phosphate rock factors; Soil and environmental factors; Plant factors; Agronomic effectiveness; Use of gafsa phosphate rock.

Download or read book Some Factors Affecting the Solubility of Phosphorus in Soils written by Russell H. Austin and published by . This book was released on 1925 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Phosphate Rocks for Sustainable Agriculture written by Food and Agriculture Organization of the United Nations. Land and Water Development Division and published by Fao. This book was released on 2004 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive research on the agronomic potential and actual effectiveness of phosphate rocks (PRs) as sources of phosphorus has been carried out in Africa, Asia, Latin America and elsewhere. This publication brings together a wide range of available information on key issues regarding the use of PRs in agriculture, including world deposits; characteristics of sources; evaluation methodologies for direct application of PR (DAPR); analysis of biophysical and farming factors; development and use of decision-support systems for DAPR; soil P testing for PR application; available technologies for enhancing the agronomic effectiveness of indigenous PR sources; environmental issues; legislation guidelines; and future research priorities.

Download or read book Phosphate Rock Dissolution in Soil written by David Lee Anderson and published by . This book was released on 1981 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock Phosphate Dissolution in Soils as Affected by Source of Rock Soil Type Method of Placement and Sulpher Addition written by Gadelkarim Mahoud Madibo and published by . This book was released on 1986 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1979 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IFDC phosphate program; Evaluation of soil phosphate residues by plant uptake and extractable phosphorus; Mineralogy and reactivity of phosphate rock; Phosphate for direct application-- phosphorite characterization and field survey of fields in the Negev, Israel; Dissolution of phosphate rocks in solutions and soils; Phosphorus concentration in soil solution as a factor affecting phosphate rock effectiveness; Agronomic measurements of phosphate rock effectiveness; Utilization of phosphate rock in tropical soils of Latin America; Reactions of a phosphate rock with soil; Method for estimating granulated phosphate rock availability for crops; Relation of phosphate rock availability to some soil properties and cultivation time; Comparison of finely ground phosphate rocks as P sources to plants; A framework to evaluate phosphate rock as an alternative in phosphate fertilization; Relative agronomic and economic effectiveness values for phosphate rocks; Experimental work in the united kingdom on the agricultural value of rock phosphates; Viewpoints on the utilization of rock phosphate for direct application; Role of phosphate rocks in the phosphatic fertilization of french soils; Experiences with soft rock phosphates for direct fertilizer application; Minigranulation-- a method for improving the properties of phosphate rock for direct application; Evaluation of granulated phosphate rock for direct application; Effect of grinding on arad phosphate rock availability; Evaluation of the bray P1 method for measuring phosphate rock availabity in soil; Methods of granulation; Views on marketing of phosphate rock for direct application.

Download or read book Soil Phosphorus written by Rattan Lal and published by CRC Press. This book was released on 2016-09-19 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus is an essential plant nutrient, but global population growth has dramatically reduced the availability of phosphorus fertilizer resources. Despite this scarcity, there remain numerous problems associated with the excessive and inappropriate use of phosphorus leading to non-point source pollution and eutrophication of natural waters. Identifying appropriate systems for managing soil phosphorus and reducing the risks of eutrophication are needed to minimize the environmental risks. This book focuses on the availability and recycling of phosphorus; regulatory and policy issues of sustainable phosphorus use; and water quality management in agroecosystems pertaining to phosphorus. Sections are dedicated to global phosphorus reserves; cycling and pathways of phosphorus; phosphorus in agriculture; human dimensions and policy intervention; and research and development priorities. Phosphorus is a finite but crucial resource and is an essential element to all life. Sub-optimal availability and nutrient imbalance in the root zone can adversely impact plant growth, and the quality of food and feed grown on these soils. However, the proven reserves of phosphorus can hardly be adequate for a few centuries only. Yet, its misuse and mismanagement has caused severe problems of eutrophication of water and pollution of the environment. Thus, judicious management of soil phosphorus is essential. This volume is specifically devoted to availability and recycling of phosphorus, regulatory/policy issues of sustainable use of phosphorus, and management in agroecosystems in the context of maximizing the use efficiency and minimizing the environmental risks of water quality.

Download or read book Phosphorous Concentration in Soil Solution as a Factor Affecting Phosphate Rock Effectiveness written by F. E. Khasawneh and published by . This book was released on 1978 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Affecting the Decomposition of Rock Phosphate in Soils written by Chich-ren Chu and published by . This book was released on 1961 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Properties and Management of Soils in the Tropics written by Pedro A. Sanchez and published by Cambridge University Press. This book was released on 2019-01-10 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.

Download or read book Rocks for Crops written by H. Peter Van Straaten and published by Guelph, Ont. : Department of Land Resource Science, University of Guelph. This book was released on 2002 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Agronomy written by and published by Academic Press. This book was released on 1996-05-23 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 57 contains six outstanding and comprehensive reviews on various agronomic topics. With this latest volume, Advances in Agronomy continues to be recognized as a prolific and first-rate reference by the scientific community. In 1993 Advances in Agronomy increased its publication frequency to three volumes per year, and will continue this trend as the breadth of agronomic inquiry and knowledge continues to grow.

Download or read book Adsorption of Inorganics at Solid liquid Interfaces written by Marc A. Anderson and published by Ann Arbor Science Publishers. This book was released on 1981 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sulfur in the Environment written by Maynard and published by CRC Press. This book was released on 1998-03-19 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the latest research on sulfur in temperate agricultural and forest ecosystems-integrating experimental findings with models of spatial scales from the cellular to the landscape level. Provides a general overview of sulfur in terrestrial ecosystems.

Download or read book The Role of Organic Matter in Modern Agriculture written by Y. Chen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of organic residues as a means of maintaining and increasing soil fertility is of long-standing. This tradition has been somewhat neglected since the introduc tion of mineral fertilizers at low cost. More and more farmers and scientists are now showing renewed interest in the proper and effective use of org~tnic residues, composts and other recycled organic additives. The role and function of organic amendments in modern agricultural systems have become topics of major interest in the scientific and agricultural communities. Research work on residue disposal has provided new concepts on the interaction between organic components and soils as well as new handling technologies (e. g. pelletizing of organic residues). The trend to conserve energy has led scientists to study the minimal tillage system, to find ways of replacing conventional inorganic fertilizers with natural organic prod ucts or microbial preparations, and to develop new composting methods. The drive to achieve higher yields in commercial greenhouse farming has led to a search for optimum substrates as growth media and for improved management techniques. This has led to the introduction of organic substitutes for peat, nota bly those originating from agricultural wastes. Another important aspect is the current interest in organic farming, where use of synthetic chemicals is avoided or prohibited. An increasing percentage of the population in highly developed countries is willing to pay premium prices for food produced on soils where inorganic fertilizers and other agricultural chemicals have not been used.