Cropping Systems with Groundnut: Resource Use and Productivity

Willey, R W and Natarajan, M and Reddy, M S and Rao, M R (1986) Cropping Systems with Groundnut: Resource Use and Productivity. In: Agrometeorology of groundnut. Proceedings of an international symposium, 21-26 August 1985, ICRISAT, Niger.

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Abstract

In the rainfed semi-arid tropics (SA T) the relatively short gro wing season usually limits the choice of cropping systems with groundnut, either to solecrop or intempping systems. This paper examines some of the mechanisms associated with environmental factors that can enable intercropping systems to outyield sole-crop systems. Temporal intercropping systems, when the component crops make their peak demands on resoums at different times, an illustrated with a groundnut/pigeonpca system. In this system higher yields from intercropping am associatad with a fuller use of environmental resoums over time. Spatial intemropping systems an illustr~ted with a 3-year rainy-season study on millet/groundnut. A higher yield from intercropping was most notably associated with impro vcd light-energy con version. Drought-stress studies on sorghum/groundnut and millet/groundnut showed no stress effkcts on the relative dry-matter yield advantages of intercropping, However, relative reproductive yield advantages of intercropping increased markedly with stress because the harvest index of sorghum and groundnut decreased much less in intemropping than in sole cropping. The importance of nitrogen fixrtion in intercropped groundnut and the likely benefits to nonlegume companions or following crops rue also discussed.

Item Type: Conference or Workshop Item (Paper)
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Mandate crops > Groundnut
Depositing User: Library ICRISAT
Date Deposited: 05 Dec 2011 03:30
Last Modified: 05 Dec 2011 03:30
URI: http://oar.icrisat.org/id/eprint/4403
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