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Full-Text Articles in Life Sciences
Forms Of Cadmium In Sandy Soils After Amendment With Soils Of Higher Fixing Capacity, S. S. Mann, G. S. P. Ritchie
Forms Of Cadmium In Sandy Soils After Amendment With Soils Of Higher Fixing Capacity, S. S. Mann, G. S. P. Ritchie
Food Science and Nutrition
Most of the Cd applied through phosphatic fertilizers in sandy soils tends to stay in mobile forms (soluble or exchangeable) and hence the risk of it leaching to underground water or its uptake by plants is higher. A sequential extraction procedure was used to assess the efficacy of amending materials (soils containing inorganic or organic adsorption components) on the re-distribution of forms of Cd in a sandy soil. Amendment of the sandy soil with each of the three soils (yellow earth, lateritic podzolic and peaty sand) was generally effective in altering the more mobile or available forms of Cd to …
Soluble Aluminium In Acidic Soils: Principles And Practicalities, G. S.P. Ritchie
Soluble Aluminium In Acidic Soils: Principles And Practicalities, G. S.P. Ritchie
Food Science and Nutrition
Our ability to predict toxic quantities of aluminium (Al) in acidic soils is limited by our understanding of the interactions between different solid forms of Al in solution and our lack of knowledge of which form control soluble Al. This review briefly considers each type of solid form of Al, particularly from a kinetic point of view and discusses models that have been developed to predict release of Al from individual forms. More comprehensive models (i.e. more than one source or sink of Al) are then discussed as well as the interactions between different solid sources of Al.
Effect Of Gypsum Application Rate And Leaching Regime On Wheat Growth In A Highly Acidic Subsoil, C. D.A. Mclay, G. S. P. Ritchie
Effect Of Gypsum Application Rate And Leaching Regime On Wheat Growth In A Highly Acidic Subsoil, C. D.A. Mclay, G. S. P. Ritchie
Food Science and Nutrition
A glasshouse experiment "was conducted to investigate gypsum application and leaching on the amelioration of" an aluminium (Al) toxic subsoil for wheat growth. Treatments included different rates of gypsum application and amount of leaching prior to wheat being grown. Wheat shoot growth increased when gypsum was applied in both the presence and absence of leaching, but growth was higher with leaching. Gypsum application led to a decrease in toxic Al as a result of a higher ionic strength and activity of AlSO4+ion pairs in the soil solution, and increased Al leached from the soil. Root growth may …