Effect of liming on the availability of three rock phosphate sources in two West African Ultisols

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dc.creatorJuo, A.S.R.
dc.creatorKang, B.T.
dc.date1979
dc.date2025-06-30T10:42:44Z
dc.date2025-06-30T10:42:44Z
dc.date.accessioned2026-06-27T16:00:19Z
dc.descriptionThe relative effectiveness of two African rock phosphate (Morocco rock, MR and Togo rock, TR) was compared with the more reactive North Carolina rock phosphate (NCR) and with Triple superphosphate (TSP) in greenhouse using two strongly acidic Ultisols from southern Nigeria with and without application of lime. Without liming, the relative effectiveness of the four P sources is in the order of NCR>TSP>MR>TR; while with liming, the sequence becomes: TSP≥NCR>MR>TR. Liming soils to pH near 5.5 depressed P uptake by plant from the rock P sources but increased P uptake from TSP. Morocco and Togo rocks are poor sources of P for direct application under both limed and unlimed conditions.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/175383
dc.identifier.urihttp://hdl.handle.net/123456789/119786
dc.languageen
dc.rightsLimited Access
dc.sourceJuo, A.S.R. & Kang, B.T. (1979). Effect of liming on the availability of three rock phosphate sources in two West African ultisols. Communications in Soil Science and Plant Analysis, 10(7), 993-1003.
dc.subjectrock phosphate
dc.subjectultisols
dc.subjectliming
dc.subjectavailability
dc.titleEffect of liming on the availability of three rock phosphate sources in two West African Ultisols
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)