Response of sorghum to fertilizer phosphorus and its residual value in a Vertisol

Sahrawat, K L and Rego, T J and Burford, J R and Rahman, M H and Rao, J K and Adam, A (1995) Response of sorghum to fertilizer phosphorus and its residual value in a Vertisol. Fertilizer Research, 41 (1). pp. 41-47. ISSN 0167-1731

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Abstract

In field experiments in the rainy seasons of 1987-89 on a Vertisol (very low in extractable P) at Patancheru, Andhra Pradesh, India, sorghum cv. CHS6 was given 0, 10, 20 or 40 kg P ha-1. Days to 50% flowering and physiological maturity were significantly reduced by P application as well as by the residues of fertilizer P applied in the previous season. In the first year of the experiment, grain yield increased from 0.14 t (no P added) to 3.48 t ha-1 with 40 kg P. P applied in the previous year was 58% as effective as fresh P but P applied two years earlier was only 18% as effective as fresh P.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Sorghum
Depositing User:	Library ICRISAT
Date Deposited:	14 Sep 2011 11:30
Last Modified:	20 Sep 2013 12:49
URI:	http://oar.icrisat.org/id/eprint/1526
Official URL:	http://dx.doi.org/10.1007/BF00749519
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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