If Alternaria is not the most widely distributed fungus, then Botrytis is. This was one of the first fungi to be described. It is similar to Alternaria in that it is an efficient saprobe, a weak pathogen, and a secondary parasite. Since its development is favored by cool, moist conditions, it occurs typically in temperate zones and on winter crops in sub-tropical areas. Botrytis can cause damping-off, stem cankers, leaf spots, flecks, and tuber rots. However, it seldom rots potato tubers and is more commonly known to cause fruit rots and blossom blights (Fig. 40-1).
KeywordsLeaf Spot Castor Bean Botrytis Cinerea Stem Canker Winter Crop
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