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Residual Effect of Pigeonpea (Cajanus cajan) on Yield and Nitrogen Response of Maize†

Published online by Cambridge University Press:  03 October 2008

J. V. D. K. Kumar Rao ,
P. J. Dart  and
P. V. S. S. Sastry
J. V. D. K. Kumar Rao
Affiliation:
International Crops Research Institute for the semi-Arid Tropics (ICRISAT), Patancheru PO, Andhra Pradesh 502 324, India
P. J. Dart
Affiliation:
International Crops Research Institute for the semi-Arid Tropics (ICRISAT), Patancheru PO, Andhra Pradesh 502 324, India
P. V. S. S. Sastry
Affiliation:
International Crops Research Institute for the semi-Arid Tropics (ICRISAT), Patancheru PO, Andhra Pradesh 502 324, India
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Summary

Field experiments during 1979 and 1980 on a Vertisol soil at ICRISAT Centre, Hyderabad, India, examined the residual effect of pigeonpea (Cajanus cajan) on growth and yield of a following maize crop. Pigeonpea was grown alone or as an intercrop with sorghum fertilized or not with 80 kg N ha−1. Sorghum alone and fallow treatments were included for comparison. In the first year, the sorghum/pigeonpea intercrop produced the largest grain and dry matter yields, but the yield of intercropped pigeonpea was about 50% less than that produced by the sole crop. Pigeonpea alone had a large residual effect on maize, increasing grain yield by 57% and total plant dry matter by 32% compared with corresponding values after fallow. In comparison, intercrop pigeonpea had little residual effect. Maize following either fallow, sorghum grown alone, with or without N, or the sorghum/pigeonpea intercrop, again with or without N, required fertilizer equivalent to 38–49 kg N ha−1 in order to attain yields similar to that of unfertilized maize following sole crop pigeonpea.

Type
Research Article
Information
Experimental Agriculture , Volume 19 , Issue 2 , April 1983 , pp. 131 - 141
Copyright
Copyright © Cambridge University Press 1983

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References

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