Effectiveness of plant extracts against Alternaria leaf blight (Alternaria alternata) infecting tomato

Tomato (Lycopersicon esculentum Mill.) is one of the most remunerative and widely grown vegetables in the world. This crop is affected by major fungal pathogens (viz., early blight, late blight, wilt, collar rot, damping off and powdery mildew), among them early blight (Alternaria alternata) is considered as most important one. Among the phytoextracts tested, the majority were found effective in inhibiting the radial growth of test fungus and highest inhibition was in neem, garlic and turmeric extracts at 10 % concentration which recorded 80.86, 79.34 and 75.24 % inhibition, respectively.