Author: Roscoe Ellis
Publisher:
ISBN:
Category : Montmorillonite
Languages : en
Pages : 168
Book Description
Rock Phosphate Availability as Influenced by Soil PH
Author: Roscoe Ellis
Publisher:
ISBN:
Category : Montmorillonite
Languages : en
Pages : 168
Book Description
Publisher:
ISBN:
Category : Montmorillonite
Languages : en
Pages : 168
Book Description
Availability of Phosphorus in Rock Phosphate as Influenced by Soil PH and Mixing with Superphosphate
Author: David Lawrence Ashby
Publisher:
ISBN:
Category : Phosphates
Languages : en
Pages : 182
Book Description
Publisher:
ISBN:
Category : Phosphates
Languages : en
Pages : 182
Book Description
Influence of Rock Phosphate on Available Phosphorus as Measured by Plant Uptake and Soil Extractants
Author: José Espinosa
Publisher: INIAP Archivo Historico
ISBN:
Category : Corn
Languages : en
Pages : 152
Book Description
Publisher: INIAP Archivo Historico
ISBN:
Category : Corn
Languages : en
Pages : 152
Book Description
ABSTRACT INFLUENCE OF ROCK PHOSPHATE ON AVAILABLE PHOSPHORUS AS MEASURED BY PLANT UPTAKE AND SOIL EXTRACTANTS
Author: JOSE ESPINOSA
Publisher: INIAP Archivo Historico
ISBN:
Category :
Languages : en
Pages : 72
Book Description
Publisher: INIAP Archivo Historico
ISBN:
Category :
Languages : en
Pages : 72
Book Description
Availability of Phosphorus in Rock Phosphate as Influenced by Soil Reaction
Influence of PH, Moisture Content, and Storage on Phosphate Availability in Almena Silt Loam
Effect of Sulfur and Manure on Availability of Rock Phosphate in Soil
Author: Percy Edgar Brown
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 40
Book Description
Sulfur Oxidation Influence on Rock Phosphate Solubilization in Soil
Author: Osni Correa de Souza
Publisher:
ISBN:
Category : Soils
Languages : en
Pages : 86
Book Description
The low solubility of many rock phosphate (RP) around the world is the main cause of their ineffectiveness when applied to soil as a source of P for crops. The low solubility decreases their value as P fertilizers and prevents their widespread use, especially for high P demanding crops. One method proposed to enhance RP solubility is to add sulfur (S) as an amendment. The oxidation of S to H2SO4 in the soil results in dissolution of the applied RP. This study tested three Brazilian RP sources (Araxa, Catalao, and Patos de Minas) mixed with S at a ratio of 5:1 (RP:S). The application of the RP-S mixtures proved to be a promising alternative method for increasing RP solubility and thus their effectiveness as P sources. The soil pH decreased proportionally to increasing rates of RP-S application. The NaHCO3 extractable soil P increased as a consequence of increased soil acidefication. The ryegrass growth, P uptake, plant P concentration and P recovered from RP sources were enhanced only when S was mixed with the RPs. On the other hand, when RP sources were applied directly without S, the available soil P as measured by NaHCO3 extraction was depleted with time regardless of source or rate of RP. The inefficiency of the directly applied RP sources to supply adequate P was evidenced by less plant growth than applied with S. Also, in addition to this inadequate supply of for plant assimilation, the directly applied RP sources failed to develop a residual reserve of available P in the soil, even at very high application ...
Publisher:
ISBN:
Category : Soils
Languages : en
Pages : 86
Book Description
The low solubility of many rock phosphate (RP) around the world is the main cause of their ineffectiveness when applied to soil as a source of P for crops. The low solubility decreases their value as P fertilizers and prevents their widespread use, especially for high P demanding crops. One method proposed to enhance RP solubility is to add sulfur (S) as an amendment. The oxidation of S to H2SO4 in the soil results in dissolution of the applied RP. This study tested three Brazilian RP sources (Araxa, Catalao, and Patos de Minas) mixed with S at a ratio of 5:1 (RP:S). The application of the RP-S mixtures proved to be a promising alternative method for increasing RP solubility and thus their effectiveness as P sources. The soil pH decreased proportionally to increasing rates of RP-S application. The NaHCO3 extractable soil P increased as a consequence of increased soil acidefication. The ryegrass growth, P uptake, plant P concentration and P recovered from RP sources were enhanced only when S was mixed with the RPs. On the other hand, when RP sources were applied directly without S, the available soil P as measured by NaHCO3 extraction was depleted with time regardless of source or rate of RP. The inefficiency of the directly applied RP sources to supply adequate P was evidenced by less plant growth than applied with S. Also, in addition to this inadequate supply of for plant assimilation, the directly applied RP sources failed to develop a residual reserve of available P in the soil, even at very high application ...
Lime and Liming
Author: Great Britain. Law Commission
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 56
Book Description
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 56
Book Description
Properties and Management of Soils in the Tropics
Author: Pedro A. Sanchez
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685
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.
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685
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.