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Assessment of ratoonability of short-duration pigeonpea genotypes

Published online by Cambridge University Press:  27 March 2009

Y. S. Chauhan ,
C. Johansen  and
S. C. Gupta
Y. S. Chauhan
Affiliation:
International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Asia Center, Patancheru, Andhra Pradesh 502324, India
C. Johansen
Affiliation:
International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Asia Center, Patancheru, Andhra Pradesh 502324, India
S. C. Gupta
Affiliation:
International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Asia Center, Patancheru, Andhra Pradesh 502324, India
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Summary

The extent of variation in ratoonability was examined in a range of recently bred short-duration pigeonpea [Cajanus cajan (L.) Millsp.] genotypes in 1989/90, 1990/91 and 1991/92 at the ICRISAT Asia Center, Andhra Pradesh, India. Traits with which this variation could be associated were assessed. Differences in the total ratoon yield of two flushes were significant among the genotypes in each season. In a few genotypes, ratoon yield constituted 50% of the total yield, which could be as high as 5·6 t/ha. Total ratoon yield was positively correlated with leaf area index in the last 2 years of experimentation. The relationship of total ratoon yield to main crop yield was significantly positive in 1991/92 only. The results suggest that there is a large variation in ratoonability among short-duration genotypes and that high leaf area retention at main crop maturity appears to contribute substantially to this variation.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 127 , Issue 3 , November 1996 , pp. 331 - 335
Copyright
Copyright © Cambridge University Press 1996

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References

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