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Effect of green manuring and mineral fertilizer on growth and yield of crops in rice-based cropping on acid lateritic soil

Published online by Cambridge University Press:  27 March 2009

A. R. Sharma  and
B. N. Mittra
A. R. Sharma
Affiliation:
Department of Agricultural Engineering, Indian Institute of Technology, Kharagpur 721302, India
B. N. Mittra
Affiliation:
Department of Agricultural Engineering, Indian Institute of Technology, Kharagpur 721302, India
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Summary

Green manuring in situ with sunnhemp (Crotalaria juncea) and dhaincha (Sesbania aculeata) significantly improved growth and yield of transplanted rice. Giving the green manure crops 15 kg N/ha or 15 kg N and 30 kg P2O5/ha further increased yield. Interaction between green manuring and N fertilizer revealed that a considerable quantity of fertilizer N (45–60 kg N/ha) applied to rice could be replaced by incorporation of green manure crops to which a small amount of fertilizer had been applied. Residual fertility in terms of organic carbon and available N, P and K increased under green manuring, whereas N fertilizer made no impact on fertility build up. Grain yield of wheat and gram increased when grown after rice in plots which had grown green manure.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 110 , Issue 3 , June 1988 , pp. 605 - 608
Copyright
Copyright © Cambridge University Press 1988

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