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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)orcid ; Moody, Phil (author)
Publication Date: 2010
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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
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