Author(s): J Srikala, Dr. B Vidya Sagar, Dr. G Uma Devi and Dr. S Triveni

Abstract: Pigeon pea is an important pulse crop of the world which is an important source of protein and other nutrients. Redgram wilt is a major disease of pigeon pea which is caused by Fusarium udum. In vitro evaluation of different isolates of biocontrol agents against F. udum was carried out to test the efficacy of antagonists against the test pathogen. Percent inhibition in the mycelia growth of the pathogen was determined. Potential isolates showed significant inhibitory effect on the pathogen. Under dual culture method maximum percent inhibition of F. udum was shown in RB-4 (Bacillus subtilis) 73.31 percent and RF-15 (Penicillium citrinum) 75.03 percent. The study suggests that the Bacillus subtilis and Penicillium citrinum has a potential to be used as biocontrol agents against Fusarium udum of pigeon pea.

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