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Grain and fodder legumes as preceding crops affecting the yield and N economy of rice

Published online by Cambridge University Press:  27 March 2009

R. De ,
Y. Yogeswara Rao  and
W. Ali
R. De
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi 110 012, India
Y. Yogeswara Rao
Affiliation:
Agricultural Research Institute, Andhra Pradesh Agricultural University, Rajendranagar, Hyderabad 500 030, India
W. Ali
Affiliation:
Agricultural Research Institute, Andhra Pradesh Agricultural University, Rajendranagar, Hyderabad 500 030, India
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Summary

Experiments made for 2 years on a sandy-loam soil showed that previous grain crops of mung bean (Vigna radiata), cow pea (V. unguiculata) and black gram (V. mungo) increased the grain and straw yield of a subsequent crop of rice relative to previous fodder crops of maize or guar bean (Cyamopsis tetragonoloba) or a grain crop of Phaseolus bean (Phaseohcs vulgaris). The benefits from preceding crops of mung bean, cow pea or black gram were equivalent to 36–67 kg N/ha of chemical fertilizer applied to the rice crop following a cereal. The legumes improved yield-contributing characters such as number of productive tillers/m2, panicle length and number of grains/panicle. The yield increase from the preceding legumes was noted even when the rice crop was given increasing rates of fertilizer up to 90 kg N/ha.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 101 , Issue 2 , October 1983 , pp. 463 - 466
Copyright
Copyright © Cambridge University Press 1983

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