06-08-2013, 04:41 PM
Effect of fungicides on Early Blight of Tomato Caused by Alternaria solani
ABSTRACT
Tomato (Lycopersicon esculentum) is the most important vegetable fruit crop grown in Akola region of Maharashtra affected by many diseases. Among the different disease of tomato, the early blight disease caused by the fungus Alternaria solani causes serious losses in India and also in abroad. A field experiment was conducted to know the effect of different fungicides in vitro and in vivo against early blight of tomato caused by Alternaria solani using poisoned food technique. It is concluded from the results that there were significant differences in terms of mean colony diameter in various treatments. All the fungicides significantly inhibited the radial mycelial growth of A. solani over un-inoculated control. Minimum growth of A. solani was recorded in Dithane M-45 (0.2%) giving 88.97% percent inhibition growth and it was found significantly superior over all other treatments. This was followed by carbendazim (12.84 mm) and copper oxychloride (13.26mm).