Noun
botrytis (usually uncountable, plural botrytises)
Any fungus of the genus Botrytis, especially Botrytis cinerea which is responsible for the formation of noble rot on grapes.
During growth, look out for slugs and snails, and, if Botrytis is spotted (usually in humid conditions), don’t be afraid to spray the plants, including the underside of the leaves. Source: Internet