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Author : Otavio Antonio De Camargo
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (14 download)
Download or read book Sorption and Movement of Inorganic Phosphorus in Alfisol written by Otavio Antonio De Camargo and published by . This book was released on 1978 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert R. Sattell
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (265 download)
Download or read book Phosphorus Characterization in Sri Lankan Alfisols written by Robert R. Sattell and published by . This book was released on 1989 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twelve Sri Lankan Alfisols were characterized for P. Soils were incubated for three weeks with sufficient P applied (P2) to elevate soil solution P to 0.2 ug P/g solution as determined by sorption curves, with 75 percent of P2 (P1), and without P (P0). For PO treatments, (a) organic P, (b) 0.5 M NaHCO3 extractable "labile" inorganic P, (c) 0.1 M NaOH extractable "moderately labile" inorganic P, and (d) concentrated HC1 extractable residual P fractions contained 44, 10, 13, and 22 % of total P respectively. Fifty five percent of applied P (P1 and P2) was recovered in the inorganic 0.5 M NaHCO3 fraction and 25 percent in the inorganic 0.1 M NaOH fraction. Significant amounts of applied P were recovered in the organic fractions of some soils. Factor analysis of PO treatment fractionation data suggested that inorganic and organic fractions were separate equilibrium systems. Both inorganic and organic systems, however, contributed significantly to P uptake in a Neubauer experiment. Moreover, applied fertilizer P appeared to increase contributions of organic P to P uptake. Correlation of Neubauer plant uptake data to Olsen, Bray 1, Bray 2, CAL, and Double acid extractable soil P showed that P uptake was most highly correlated to Double acid extractable P. Regression analysis suggested that the higher correlation was due to the Double acid extractant's ability to measure the organic P contribution to P uptake. Phosphorus sorption by the soils ranged from low to medium and was described satisfactorily by either the Langmuir two surface or the Freundlich equation but not by the Langmuir one surface equation. Correlation analysis indicated that oxalate extractable Fe was the soil component most active in P sorption. Although organic matter and pH were correlated to sorption capacity and may have been directly involved in the P sorption mechanisms they could also have covaried with other components responsible for sorption. Although citrate-dithionite extractable Fe did not appear to be involved in P sorption its high correlation with residual P fractions suggests an involvement with "slow" sorption. Phosphorous sorption had no apparent influence on P uptake by foxtail millet from the 12 soils in a Neubauer experiment.
Author : Daud Bin Chinta
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.E/5 ( download)
Download or read book Transformation of Inorganic Phosphorus Under Continuous Flooded Conditions and Wet-dry Cycles and the Phosphorus Sorption-desorption Characteristics of Two Acid Sulfate Soils written by Daud Bin Chinta and published by . This book was released on 1981 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.0/5 ( download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1980 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carl George Enfield
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.3/5 (91 download)
Download or read book Kinetic Model for Orthophosphate Reactions in Mineral Soils written by Carl George Enfield and published by . This book was released on 1975 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Faustin Iyamuremye
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (362 download)
Download or read book Effects of Organic and Inorganic Soil Amendments of Phosphorus Sorption written by Faustin Iyamuremye and published by . This book was released on 1994 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Katarina Börling
Publisher :
ISBN 13 : 9789157664662
Total Pages : 39 pages
Book Rating : 4.6/5 (646 download)
Download or read book Phosphorus Sorption, Accumulation and Leaching written by Katarina Börling and published by . This book was released on 2003 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pedro A. Sanchez
Publisher : Cambridge University Press
ISBN 13 : 1107176050
Total Pages : 685 pages
Book Rating : 4.1/5 (71 download)
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.
Author : Keith David Earl
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (154 download)
Download or read book Sorption and Desorption of Inorganic Phosphate by Soils as Influenced by Inorganic and Organic Anions written by Keith David Earl and published by . This book was released on 1975 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Walter Taylor
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.3/5 (129 download)
Download or read book Phosphorus Adsorption and Movement in Soils written by Robert Walter Taylor and published by . This book was released on 1977 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hassan Suliman Ibrahim
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.3/5 (121 download)
Download or read book Phosphorus Sorption in Relation to Time, Temperature and Plant Availability written by Hassan Suliman Ibrahim and published by . This book was released on 1981 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Christopher Ryden
Publisher :
ISBN 13 :
Total Pages : 342 pages
Book Rating : 4.:/5 (155 download)
Download or read book The Reactions and Mechanisms of Inorganic Phosphate Sorption by Soils written by John Christopher Ryden and published by . This book was released on 1975 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 538 pages
Book Rating : 4.E/5 ( download)
Download or read book Environmental Health Perspectives written by and published by . This book was released on 1990 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phosphorus Sorption, Accumulation and Leaching written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Arable land is a major diffuse source of P loads to surface waters. The main processes for P losses from agricultural fields are erosion, surface runoff and subsurface leaching. To identify agricultural soils vulnerable to P losses, it is necessary to understand the processes behind these losses. This thesis mainly concerns processes influencing subsurface leaching. Phosphorus sorption and accumulation were studied in the laboratory to evaluate how these processes affect the release of P, which potentially can be leached. Furthermore, P leaching from undisturbed soil cores exposed to natural conditions was studied. All studies were performed on soils from the Swedish long-term fertility experiment, which includes soil types common in southern and central Sweden, each with four soil P levels. P sorption capacity in the soils studied ranged from 6.0 to 12.2 mmol kg-1 soil and was correlated with the amounts of oxalate extractable Fe and Al in the soils. Phosphorus release was correlated with soil test P values (STP) for individual soils, but STP could not explain P release when soils with different P sorption capacities were considered. Instead, estimates of P sorption saturation using a ratio of STP and P sorption capacity proved to be useful for assessing P release. Long-term inorganic P fertilization of 42 to 49 kg P ha-1yr-1 for more than 30 years caused P accumulation down to 40 cm depth in the soil profiles. Below this depth no differences in P properties were found between fertilized and non-fertilized soils. Total P losses from the lysimeters ranged from 0.03 to 1.09 kg ha-1yr-1 and were not correlated with either STP or P sorption saturation. Total P leaching was greatest from a soil in which macropore flow dominated water transport, irrespective of STP. In another soil, with low P sorption capacity, P sorption saturation and P leaching were high from the highest fertilized treatment. In the remaining soils, P sorption and release processes in the subsoils in
Author :
Publisher :
ISBN 13 :
Total Pages : 640 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1978 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 562 pages
Book Rating : 4.:/5 (31 download)
Download or read book SSSA Special Publication written by and published by . This book was released on 1979 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Krishnier Purushothaman
Publisher :
ISBN 13 :
Total Pages : 158 pages
Book Rating : 4.:/5 (983 download)
Download or read book Removal of Phosphates by Sorption on Activated Alumina written by Krishnier Purushothaman and published by . This book was released on 1970 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the investigation was to study the removal of phosphorus from waste water by sorption on activated alumina, and determine the capacity of the alumina to sorb phosphates in the presence of other ions, the effect of the influent flow rate and phosphorus concentration on the efficiency of the process, and the feasibility of regeneration of the used alumina. The studies were conducted using deionized and tap water to which inorganic phosphate had been added, and secondary effluent from bench-scale activated sludge units. They involved batch tests employing three types of activated alumina, ALCOA XM (minus 325 mesh), F-1 (minus 100 mesh), and F-1 (28-48 mesh), and continuous-flow tests carried out in three specially designed glass sorption columns using the F-1 (28-48) alumina. Activated alumina was found to have a greater capacity for removing phosphorus in the presence of hardness-causing ions, and each type of alumina had a different capacity for each test water used. The fraction of phosphorus removed by each alumina decreased when the initial phosphorus concentration in the test water increased. The influent flow rate inversely affected the phosphorus loading capacity of the alumina, and the used aluminas could be effectively regenerated with a 2M sodium hydroxide solution along.
