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Dissolution and agronomic efficiency of phosphate rock and partially acidulated phosphate rock fertilizers in some acid lowland rice soils in tropical Asia



Dissolution and agronomic efficiency of phosphate rock and partially acidulated phosphate rock fertilizers in some acid lowland rice soils in tropical Asia



Workshop on phosphate sources for acid soils in the humid tropics of Asia, 6-7 November 1990, Kuala Lumpur, Malaysia: 145-162



A kinetic experiment was conducted to study the dissolution behaviour of some sparingly soluble phosphorus (P) sources such as phosphate rock (PR) and partially acidulated phosphate rock (PAPR) in acid lowland rice soils of the Philippines, Vietnam, Thailand, Indonesia and India. The relative effectiveness of these sources in maintaining soluble P was assessed and compared with that of triple superphosphate (TSP) at different periods of reaction in soils.

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Accession: 002347769

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