Effect of pH & Different Media on Mycelial Growth of Alternaria solani Causing Early Blight of Tomato in Manipur and In-vivo Evaluation of Native Trichoderma spp., One Chemical Fungicide (Mancozeb) on Alternaria solani Causing Early Blight of Tomato

Abstract

The tomato is the edible, often red berry of the plant Solanum lycopersicum, commonly known as a tomatoplant. The species originated in western South America and Central America. The area under tomatocultivation in Manipur accounts for about 0.15 million hectares with an average production of 2.10 milliontonnes and productivity of 12.02 tonnes ha-1during 2016-17. Present research was carried out to study theeffect of different culture media and pH on mycelia growth of Alternaria solani. Among seven culture mediathat were tested, the fungus grew best on Richards agar, OatMeal Agar and Coon’s media. The most suitablepH for growth of fungus was 6.0 and 7.0. Native Trichoderma spp. has good effect on controlling early blightof tomato in filed conditions.&nbsp