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Dry-season Legume Forages to Follow Paddy Rice in NE Thailand. III. Influence of Time and Intensity of Cutting on Crotalaria juncea

Published online by Cambridge University Press:  03 October 2008

C. D. J. Kessler  and
H. M. Shelton
C. D. J. Kessler
Affiliation:
Department of Agriculture, University of Queensland, St Lucia, 4067, Brisbane, Australia
H. M. Shelton
Affiliation:
Department of Agriculture, University of Queensland, St Lucia, 4067, Brisbane, Australia
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Summary

An experiment at the University of Queensland studied the response of Crotalaria juncea to a single cut above node 4 or 10 at 6, 8 or 10 weeks after planting under long or short (inductive) daylengths. Initial deleterious effects of cutting on plant parts were in the sequence nodules > roots > shoots. Subsequent greater regrowth from plants cut earliest and at the higher node was associated with higher residual leaf area and negative growth rates were inferred below 90 cm2 pot−1. Redistribution of assimilate from stem to leaf production followed cutting; in inductive daylengths of 11.4 hours, flowering was delayed and the proportion of leaf increased from 21.0 to 32.4%. The high nitrogen content of leaf (3.5–5.3%) compared to stem (0.6–1.7%) indicated that early cutting was important in producing good quality hay.

Type
Research Article
Information
Experimental Agriculture , Volume 16 , Issue 2 , April 1980 , pp. 207 - 214
Copyright
Copyright © Cambridge University Press 1980

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