Relationship between extracted phosphorus and sorghum yield in a Vertisol and an Alfisol under rainfed cropping

Sahrawat, K L and Pardhasaradhi, G and Rego, T J and Rahman, M H (1996) Relationship between extracted phosphorus and sorghum yield in a Vertisol and an Alfisol under rainfed cropping. Fertilizer Research, 44 (1). pp. 23-26.

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Abstract

Field experiments were conducted during the 1990 rainy season (June-September) in Andhra Pradesh, India on Vertisol and Alfisol sites having a range in extractable P, for establishing relationships between extractable P and sorghum yield. In the Vertisol, 90% relative grain yield of sorghum was obtained at 2.8 mg/kg Olsen extractable P while in the Alfisol, 90% relative grain yield was achieved at 5.0 mg P/kg soil. These results suggest that a single critical limit of available P does not hold true for grain sorghum in the two soil types under similar agroclimatic conditions and that the critical limit is lower for the clayey Vertisol than the sandy Alfisol.

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Mandate crops > Sorghum
Depositing User: Library ICRISAT
Date Deposited: 19 Sep 2011 04:05
Last Modified: 19 Sep 2011 04:05
URI: http://oar.icrisat.org/id/eprint/1576
Official URL: http://dx.doi.org/10.1007/BF00750689
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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