Effect of Leaf Extract of Garlic on Fusarium oxysporum f. sp. ciceri, Sclerotinia sclerotiorum and on Gram Seeds

Abstract
The effect of aqueous garlic[Allium sativum]-leaf extract on 2 pathogens, F. oxysporum f. sp. Ciceri and S. sclerotiorum, which incite wilt diseases in gram (Cicer arietinum) was studied. Growth of the 2 fungi in liquid medium was greatly reduced by 7000 and 5000 ppm of the extract, respectively. Although germination of gram seeds treated with 50,000-80,000 ppm of the extract was delayed, it always exceeded 70% four or more days after treatment. Extract-treated seeds sown in soil infested with the pathogens, singly and intermixed, produced wilt free seedlings, whereas all the seedlings from untreated seeds showed wilt symptoms. A possible use of garlic leaf extract in controlling plant diseases under field conditions is suggested.