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|Title:||Effect of P and Si amendment on the charge characteristics and management of a Geric soil||Contributor(s):||Nguyen, Chon Quang (author); Guppy, Christopher (author) ; Moody, Phil (author)||Publication Date:||2010||Handle Link:||https://hdl.handle.net/1959.11/6523||Abstract:||Improving surface charge characteristics of geric Ferralsols may increase nutrient retention in highly weathered tropical soils of Vietnam. Application of increasing amounts of fused magnesium phosphate (FMP) increased soil pH by one unit and cation exchange capacity (CEC) 10-fold following 7 days incubation near field capacity at 40°C. Similarly, calcium and magnesium silicate amendments at rates designed to apply the same amount of silicon as a high FMP application also increased pH and CEC. In contrast pH₀ remained relatively unchanged except following high silicon application. It is recommended that strategies that increase pH are more likely to increase CEC in geric soils than amendments that aim to lower the pH₀.||Publication Type:||Conference Publication||Conference Name:||19th World Congress of Soil Science, Brisbane, Australia, 1st - 6th August, 2010||Conference Details:||19th World Congress of Soil Science, Brisbane, Australia, 1st - 6th August, 2010||Source of Publication:||Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World, p. 56-59||Publisher:||International Union of Soil Sciences and Australian Society of Soil Science Inc||Place of Publication:||Brisbane, Australia||Field of Research (FOR):||050304 Soil Chemistry (excl Carbon Sequestration Science)||Socio-Economic Outcome Codes:||829999 Plant Production and Plant Primary Products not elsewhere classified||Peer Reviewed:||Yes||HERDC Category Description:||E1 Refereed Scholarly Conference Publication||Other Links:||http://trove.nla.gov.au/work/37807472
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