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Incidence of Internal Brown Spot Disease in White Lisbon Yams (Dioscorea alata) During Storage

Published online by Cambridge University Press:  03 October 2008

S. H. Mantell  and
S. Q. Haque
S. H. Mantell
Affiliation:
Caribbean Agricultural Research and Development Institute, University of the West Indies, St Augustine, Trinidad
S. Q. Haque
Affiliation:
Caribbean Agricultural Research and Development Institute, University of the West Indies, St Augustine, Trinidad
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Summary

Tubers of Dioscorea alata L. cv White Lisbon, affected by Internal Brown Spot (IBS) disease, and stored under ambient conditions on wooden or wire racks, did not show significant increases in IBS incidence and mean lesions over storage periods of up to 18 weeks. Storage under different conditions of temperature (13, 20 and 28 ± 3°C) did not have any significant effect on IBS incidence; but tubers stored under conditions of high relative humidity (95 ± 2%) showed less IBS and greater mean lesion diameters. Although a significant reduction in disease incidence occurred during storage under the latter conditions, the effects of increased lesion size resulted in some deterioration of tuber quality.

Type
Research Article
Information
Experimental Agriculture , Volume 14 , Issue 2 , April 1978 , pp. 167 - 172
Copyright
Copyright © Cambridge University Press 1978

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