Download or read book Availability of Phosphorus in Rock Phosphate as Influenced by Soil Reaction written by Warner Hale Anthony and published by . This book was released on 1951 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Availability of Phosphorus in Rock Phosphate as Influenced by Soil PH and Mixing with Superphosphate written by David Lawrence Ashby and published by . This book was released on 1964 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock Phosphate Availability as Influenced by Soil PH written by Roscoe Ellis and published by . This book was released on 1954 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Rock Phosphate on Available Phosphorus as Measured by Plant Uptake and Soil Extractants written by José Espinosa and published by INIAP Archivo Historico. This book was released on 1979 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ABSTRACT INFLUENCE OF ROCK PHOSPHATE ON AVAILABLE PHOSPHORUS AS MEASURED BY PLANT UPTAKE AND SOIL EXTRACTANTS written by JOSE ESPINOSA and published by INIAP Archivo Historico. This book was released on with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phosphorus and Its Availability as Influenced by Organic Matter written by Philip John Westgate and published by . This book was released on 1940 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of PH Moisture Content and Storage on Phosphate Availability in Almena Silt Loam written by Teh Ming Yu and published by . This book was released on 1947 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Sulfur and Manure on Availability of Rock Phosphate in Soil written by Percy Edgar Brown and published by . This book was released on 1917 with total page 40 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 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.

Download or read book Availability of Rock Phosphate Fertilizer as Affected by Particle Size Incubation and Soil Reaction written by Lloyd L. Joos and published by . This book was released on 1949 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Legacy Phosphorus in Agriculture Role of Past Management and Perspectives for the Future written by Luke Gatiboni and published by Frontiers Media SA. This book was released on 2021-01-07 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phosphate in Soils written by H. Magdi Selim and published by CRC Press. This book was released on 2018-10-08 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by One of the Best Specialists in Soil Science Recent studies reveal that Phosphorus (P) in the form of phosphate, a macronutrient essential for plant growth, and crop yields can influence the bioavailability, retention, and mobility of trace elements, metal(loid)s, and radio nuclides in soils. When this occurs, phosphates can affect the dynamics of heavy metals and influence soil characteristics, impacting soil mobility and toxicity. Phosphate in Soils: Interaction with Micronutrients, Radionuclides and Heavy Metals utilizes the latest research to emphasize the role that phosphate plays in enhancing or reducing the mobility of heavy metals in soil, and the soil-water-plant environment. It provides an in-depth understanding of each heavy metal species, and expands on phosphate interactions in geological material. Composed of 12 chapters, this text: Provides an overview of the reactions of metal(loid)s and common P compounds that are used as fertilizer in soils Emphasizes the effect of phosphorus on copper and zinc adsorption in acid soils Discusses findings on the influence of phosphate compounds on speciation, mobility, and bioavailability of heavy metals in soils as well as the role of phosphates on in situ and phytoremediation of heavy metals for contaminated soils Places emphasis on the influence of phosphate on various heavy metals species in soils, and their solubility/mobility and availability Provides extensive information on testing various high phosphate materials for remediation of heavy metal, micronutrients, and radionuclides contaminated sites Explores the reactivity of heavy metals, micronutrients and radionuclides elements in several soils Presents a case study illustrating various remediation efforts of acidic soils and remediation of Cu, Zn, and lead (Pb) contaminated soils around nonferrous industrial plants Emphasizes the significance of common ions (cations and anions) on phosphate mobility and sorption in soils, and more The author includes analytical and numerical solutions along with hands-on applications, and addresses other topics that include the transport and sorption modeling of heavy metals in the presence of phosphate at different scales in the vadose zone.

Download or read book Cycles of Soils written by F. J. Stevenson and published by Wiley-Interscience. This book was released on 1986-01-17 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The carbon cycle. Carbon balance of the soil and role of organic matter in soil fertility. Environmental aspects of the soil carbon cycle. The nitrogen cycle in soil: global and ecological aspects. The international cycle of nitrogen in soil. Impact of nitrogen on health and the environment. The phosporus cycle. The sulfur cycle. The micronutrient cycle.

Download or read book Divergent Influences of Base Saturation of Soils on the Availability of Native and Applied Phosphates written by Ray Lewis Cook and published by . This book was released on 1934 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microorganisms in Soils Roles in Genesis and Functions written by Francois Buscot and published by Springer Science & Business Media. This book was released on 2007-01-04 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: For this third volume of the series Soil Biology, internationally renowned scientists shed light on the significant roles of microbes in soil. Key topics covered include: bioerosion, humification, mineralization and soil aggregation; Interactions in the mycorrhizosphere; microbes and plant nutrient cycling; Microbes in soil surface or toxic metal polluted soils; Use of marker genes and isotopes in soil microbiology, and many more.

Download or read book Reaction of Rock Phosphorus in Some Brazilian Soils and Their Utilization by Plants written by P. Rosand Cabala and published by . This book was released on 1979 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: In three soil from southern Bahia(Brazil) a local (Patos) rock phosphorus wa compared with monocalcium phosphate and Gafsa and Morocco rock phosphates as a source of P by sorghum and by phosphate soil parameters. The utilization of Patos rock phosphate by two legumes and two grasses with VA mycorrhizal infection and NH4 or NO3 nitrogen nutrition was evaluated and, using soil blocks, pH gradients at different distances from the root plane were determined. Low fertilizer value was recorded for Patos rock phosphate, the effectiness of whic increased with storage time only in a clay soil having high organic matter content, CEC, and high adsorption capacity. In all soils Gafsa and Morocco showed equal or higher effectiveness than monocalcium phosphate. The low availability of Patos in related to its mineralogical composition, to low solubility in 2% citric acid and low amounts of phosphate extracted by anion exchange resin. The highest rate of P immobilization was recorded in a soil having a high content of Al and Fe extracted by dithionite and pyrophosphate, and also goethite and gibbsite as revealed by X-ray examination. The behaviour was note realed by x-ray examination. This behaviour was note related to the amounts of Al and Fe extracted by oxalate, exchangeable e Al or to the adsorption-dsorption properties using o,01M CaCl2 solutions. Phosphate extracted by anion exchange resin showed the best correlation with P uptake by sorghum, E value P soluble in water being second and third best. Poor correlations ...