Biological Control of Tomato Grey Mould with Compost Water Extracts, Trichoderma sp., and Gliocladium sp.

Compost water extracts prepared from animal sources (horse, sheep, and cattle) and a plant source (olive) were tested for their control of leaf grey mould on tomato. Disease was reduced by 27–66% and by 41–70% by extracts after 7 days and 15 days of fermentation respectively. No effect was noted with extracts after only 10 hours of fermentation. Conidial suspensions of Trichoderma harzianum, of Gliocladium sp. and compost extracts derived from horses achieved similar and significant (