Effect of Rhizobium Numbers on Nodulation and Dinitrogen Fixation in Groundnut

Nambiar, P.T.C. and Ravishankar, H.N. and Dart, P.J. (1983) Effect of Rhizobium Numbers on Nodulation and Dinitrogen Fixation in Groundnut. Experimental Agriculture, 19 (3). pp. 243-250. ISSN 0014-4797

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Abstract

In greenhouse studies, shoot and nodule wt./plant of groundnut cv. Kadiri 71-1 increased with increase in inoculum density from 6.1 × 10² to 3.2 × 109 rhizobia/seed. In a 2nd experiment with cv. Robut 33-1 and TMV2 inoculated with 2 Rhizobium strains, number of nodules/plant increased from 6-11 at 2.7 × 10² to 143-243 at 2.7 × 108 rhizobia/seed but N2 fixation at 106 rhizobia/seed was close to that at 108. Strain 5a/70 fixed more N2 at a given inoculum density than strain NC92.ADDITIONAL ABSTRACT:In greenhouse studies, seedlings of three cultivars were inoculated with Rhizobium at four inoculum densities (102-109 rhizobia/seed). Robut 33-1 and TMV2 required 106 rhizobia/seed for maximum nodulation and nitrogen fixation, while Kadiri 71-1 required larger numbers.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Rhizobium, Nodulation, Dinitrogen Fixation, Groundnut
Subjects:	Mandate crops > Groundnut
Depositing User:	Mr. Arbind Seth
Date Deposited:	12 Jan 2014 08:32
Last Modified:	07 Feb 2014 06:02
URI:	http://oar.icrisat.org/id/eprint/6978
Official URL:	http://dx.doi.org/10.1017/S0014479700022766
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
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