Effects of Fallow and Pigeon pea on Yield and Nitrogen Response of the Succeeding Sorghum on a Vertisol

Sahrawat, K L and Rego, T J and Natarajan, M and Burford, J R (1996) Effects of Fallow and Pigeon pea on Yield and Nitrogen Response of the Succeeding Sorghum on a Vertisol. Tropical Agriculture(Trinidad), 73 (2). pp. 90-93. ISSN 0041-3216

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Abstract

The effect of a weed-free fallow and short- and medium-duration pigeon pea (Cajanus cajan cv. ICPL 87 and ICPL 6, respectively) in the first year's growing season on yield and N response of a succeeding sorghum cv. CSH6 crop on a Vertisol under dryland conditions in India was examined. In the second year, a sorghum crop was grown on all the treatments with four rates of applied N (0, 30, 60, and 90 kg N ha-1 as urea). The response of sorghum to N depended on the preceding crop. Weed-free fallow gave the largest grain and straw yield of sorghum without applied N, which was significantly higher than the yields obtained from other treatments with no added N. Both short- and medium-duration pigeon pea had a non-significant residual N effect on the yield and N uptake of the succeeding sorghum crop. Mineral N accumulated in the weed-free fallow was significantly higher than that accumulated in the other preceding crop treatments, and this significantly influenced sorghum grain and straw yields, uptake of N, and response to zero and 30 kg N ha-1 applied in the succeeding season.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Pigeonpea Mandate crops > Sorghum
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	11 Nov 2011 05:05
Last Modified:	11 Nov 2011 05:05
URI:	http://oar.icrisat.org/id/eprint/3890
Official URL:
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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