Cashew (Anacardium occidentale
L.) is popularly known as the ‘Gold mine’ of wasteland. Initially, it was considered as a suitable crop for soil conservation, afforestation and also wasteland development but gradually gained commercial importance. In cashew cultivation, production and processing, Odisha stands third in India, claiming 16% of land under cashew cultivation area at 1.68 Lakh hectares and producing 1,00,000 MT of raw cashew nut (13.6% of India's raw cashew nut production). Cashew is infected by more than 20 diseases worldwide. Among the diseases, anthracnose caused by Colletotrichum gloeosporioides
(Penz.), perfect stage Glomerella cingulata
(Ston.) Spauld. & Schrenk is a serious menace in cultivation of cashew causing economic loss in Odisha. The present investigation was carried out with an objective to study the efficacy of some bio-control agents in in-vitro
condition. Four antagonistic microorganisms like Trichoderma viride, Trichoderma harzianum, Trichoderma hamatum
and Pseudomonas fluorescens
in medium of potato dextrose agar and evaluated for their antagonistic effect under in-vitro
condition against Colletotrichum gloeosporioides
by dual culture technique. It has been found that the maximum growth inhibition was seen in case of Trichoderma viride
(84.9%) followed by T. harzianum
(77.4%). However, least inhibition of 74.5% was recorded in T. hamatum.
However the testing of bio-control agents may be carried out under field condition for further confirmation.