Author(s):

P Renganathan and KR Saravanan

Abstract: The results of in vitro experiment revealed that the maximum inhibition observed in the leaf extract of Ocimum (10%) exerted respectively 82.22 and 80.00 per cent mycelial growth with C. musae and B. theobromae. Where as F. solani was effectively controlled by the leaf extract of neem (10%) recording mycelial growth of 1.30 mm as compared to control. Leaf extract of casurina (10%) exerted the least inhibition of all three pathogens. In vivo experiment revealed that the fruits inoculated with C. musae, B. theobromae and F. solani when the fruits dipped in ocimum leaf extract (10%) exerted maximum lesion size was reduced to 0.8, 1.0 and 0.8 cm from 4.00 cm, 4.20 cm and 3.5 cm in control respectively. Vilvum leaf extract (10%) was the least inhibitory recording the growth of 2.2 cm of B. theobromae, 2.0 cm of C. musae and 1.9 cm of F. solani.

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