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Dry-season Legume Forages to Follow Paddy Rice in N. E. Thailand. II. Soil Fertility and Planting Methods

Published online by Cambridge University Press:  03 October 2008

H. M. Shelton
H. M. Shelton
Affiliation:
Khon Kaen University, Khon Kaen, Thailand
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Summary

Results clearly demonstrate that Crotalaria juncea (sunnhemp) is well adapted to the dry season paddy environment; peak dry matter production was 3170 kg ha−1 in a field experiment with rows 30 cm apart and 100 kg−1 ha of seed. A pot experiment gave yield responses of 179 and 16% to P and S application respectively but there was no response to fertilizer in the field. Cultivation increased DM production in one experiment from 86 to 1590 kg−1 ha, attributed to a reduction in bulk density from 1·65 to 1·19 g cm−3. This effect was not fully substantiated in a second experiment on a coarser soil, where good DM production of sunnhemp was achieved even on broadcast uncultivated plots. The toxicological implications of using sunnhemp as a forage legume are briefly discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 16 , Issue 1 , January 1980 , pp. 67 - 73
Copyright
Copyright © Cambridge University Press 1980

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References

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