Extractable phosphorus and rice yield in an ultisol of the humid forest zone in West Africa

Sahrawat, K L and Jones, M P and Diatta, S (1997) Extractable phosphorus and rice yield in an ultisol of the humid forest zone in West Africa. Communications in Soil Science and Plant Analysis, 28 (9-10). pp. 711-716. ISSN 0010-3624

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Abstract

Little attention has been devoted to calibrating soil tests for phosphorus (P) in the field for upland rice in West Africa. The information is needed to improve fertilizer P recommendations. A field experiment was conducted in the rainy season of 1994 to establish the relationship between extractable P by Bray 1 and grain yield of four upland rice cultivars grown on an Ultisol in the forest zone of Ivory Coast. The critical limit of Bray 1 P in the soil at 90% relative rice grain yield varied from 12.5 to 15.0 mg P/kg of soil for the four cultivars tested. The P critical limit in the soil tended to be lower for the cultivars of rice earlier found to be efficient at converting applied P into grain yield.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others > Soil Science
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	30 Nov 2011 11:40
Last Modified:	30 Nov 2011 11:48
URI:	http://oar.icrisat.org/id/eprint/4567
Official URL:	http://dx.doi.org/10.1080/00103629709369823
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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