Effect of a High Nodulating Selection of Chickpea Cultlvar ICC 4948 on 5011 Properties of a Chlckpea- Sorghum Cropping System Yield and

Rupela, O P and Wani, S P and Danso, S K A and Johansen, C (1995) Effect of a High Nodulating Selection of Chickpea Cultlvar ICC 4948 on 5011 Properties of a Chlckpea- Sorghum Cropping System Yield and. Journal of soil biology & ecology., 15 (2). pp. 127-134. ISSN 0970-1370

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Abstract

Plants of widely different nodulation capacities occurring in a chickpea variety ICC 4948 (=0 130) and lat-er developed into separate lines were compared in ch ickpcap$orghum field. a experiment. The high nodul,'ing (liN) chickpca scl.clion produced only marginally h i g her' grai n yield (3.3·6.9%, mean or the two N levels) than th.'lt of the unselected normal variety and the: low nodulating (LN) sd�ction. Out t h e liN selection fixed signiricanUy more atmospheric nitrogen at low soil N (as measured by acetylene reduction a\.:tivity). and also liupported increased microbial plots activity in the rhizosphcre. Also. at low soil mineral N I.::vel. the microbial (lush C:N ratio in the of the of the liN selection was narrower (16.0) than that in plols LN (24.4) nnd nonnodulating (20.4) selections. (ncreased microbial activity. along with a narrower flush C:N ratio in the case. of HN seh:clions compared with the LN selection, lead to nil increased availability of N for the following sorghum crop. This resulted in an extra uptake of 20 kg N ha·1 by chickpea and! sorghum together. These studies indicated the benefits of liN selections of chickpea under low soil N and inigated conditions for increased N yield and incrensed microbial activity in a chickpea�sorghum cropping syslem These results are for I year only and suggesl tile need 10 s lu dy the cumul.tive crre� . of the high BNF lines on crop productivity over lime in a cropping systems perspective:

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Chickpea Mandate crops > Sorghum
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	01 Dec 2011 10:54
Last Modified:	22 Feb 2012 11:28
URI:	http://oar.icrisat.org/id/eprint/4630
Official URL:
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	We thank Mr. K.C. Mouli for technical assistancG, Mis K. Papa Rao, P.V.S. Prasad and L. Salyanarayana for carrying oul field jobs,.and Mr. P.V.S. Prasad for wordprocessing lhe manuscrip
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