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Influence of Moisture and Temperature on Yam Decay Organisms. M. O. Adeniji, Lecturer in Plant Pathology, Department of Agricultural Biology, University of Ibadan, Nigeria. Phytopathology 60:1698-1699. DOI: 10.1094/Phyto-60-1698.

Yam decay by three storage fungi was greatest at 25-30 C. There was negligible decay by all fungi at 15 C. Penicillium oxalicum was less severe at temperatures above 25 C, whereas Aspergillus niger was progressively more severe above this temperature up to 35 C. Botryodiplodia theobromae did not cause decay at 35 C. Moisture availability did not significantly influence the amount of decay, although optimum moisture level for decay was 90% relative humidity.