Download or read book Factors Influencing the Phosphate Content of Soils written by and published by . This book was released on 1909 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Influencing the Phosphate Content of Soils written by University of Wisconsin--Madison. Agricultural Experiment Station and published by . This book was released on 1905 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Available Phosphate Content of Soils and Some Factors Affecting it written by Samuel Shockley Obenshain and published by . This book was released on 1932 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Factors Influencing the Equilibrium Concentration of Phosphate in Soil written by Robert Edwin White and published by . This book was released on 1962 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Some Factors Influencing the Chemical Potential of Phosphate in Soils written by A. W. Fordham and published by . This book was released on 1960 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Influencing the Availability of Native Soil Phosphate and Phosphate Fertilizers in Arizona Soils written by Andrew Alexander Nichol and published by . This book was released on 1938 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 A Study of Some Factors Influencing the Availability of Phosphorus in Soils written by Anthony Chester Richer and published by . This book was released on 1935 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summary of Phosphorus Research in the United States Relating to Soils and Fertilizers written by National Phosphorus Research Work Group and published by . This book was released on 1950 with total page 128 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 Factors Influencing the Availability of Native Soil Phosphate and Phosphate Fertilizers in Arizona Soils written by William Thomas McGeorge and published by . This book was released on 1939 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Affecting Phosphate Sorption by Soils and Minerals written by Sergio Jorge Volkweiss and published by . This book was released on 1973 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research were to study the P sorption characteristics of soils and the effects of pH and of cation type and concentration on P sorption by soils and minerals. In an attempt to characterize the nature and properties of P sorption sites of soils, P sorption isotherms in a 0.1 N NaC1 system were obtained for six limed and unlimed agricultural soils from Rio Grande do Sul, Brazil. The equilibration time was 48 hours and the concentration of P in the final solution varied from near zero to 20 ugP/ml. Langmuir plots (c/x vs c) of the data resulted in curvilinear and/or multi-straight line relationships suggesting the presence of 2 or more populations of sites with different affinities for P. An iterative multiple regression analysis computer program that assumes that each population of site follows the Langmuir equation was used to analyze the sorption data. Three populations of sites with different affinities for P were detected and the Langmuir constants, k (binding energy term) and b (sorption maximum) were estimated for each population of sites. The median and range for values of k (ml/ug P) and b (ugP/g) for the three populations of site were in decreasing order of affinity for P:K1 = 140, (40-2870) and b1=120 (8-370); K2=2.4, (0.63-10) and b2=174, (25-704); and K3 =0.095, (0.051-0.27) and b3=763 (131-1460). On the average, the total number of P sorption sites (total) was made up of 10% of sites with high affinity for P, 22% with moderate and 68% with low affinity ...

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 Influencing the Relations Between Available Phosphate in Soil as Shown by Morgan extract and the Phosphate Uptake by Plants written by J. K. Gitau and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Chemical and Physical Factors Affecting the Relative Availability of Inorganic Phosphorus in Soils written by A. S. R. Juo and published by . This book was released on 1966 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Processes and Factors Affecting Phosphorus Sorption in Soils written by Samuel Asomaning and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this chapter is soil chemistry. The chapter is entitled Processes and Factors Affecting Phosphorus (P) Adsorption in Soils. The chapter aims to give an overview of the major mechanisms responsible for phosphate sorption (i.e., adsorption and absorption of phosphate) in soils, particularly of acid soils. According to studies conducted by some soil scientists, the major soil factors affecting P sorption are time, soil pH, soil organic matter, and iron and aluminium oxides of soils. Studies conducted indicated that adsorption of the P increases as the P ages in the soil. Soil pH affects phosphate adsorption but the effect is limited for adsorption by soils in the pH range of 4,Äì8. Organic matter may affect P adsorption in two ways: indirectly by inhibiting iron oxide crystallisation and directly by competing for adsorption sites. On per mole basis, oxalate extractable aluminium oxides adsorb nearly twice as much P as oxalate extractable iron oxides due to poorer crystallinity (higher specific area) of the aluminium oxides compared to the iron oxides and also to a higher charge of the former. The chapter also highlights the pedotransfer functions (PTFs) of Borggaard, which can be used to calculate for the P adsorption in highly weathered acid soils.