Phylloplane microflora of citrus and their role in management of citrus canker
334 / 1522
Authors
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PABITRA KALITA, L.C. BORA and K.N. BHAGABATI
Department of Plant Pathology, Assam Agricultural University, Jorhat 785 OJ 3
Keywords:
Phylloplane, antagonist, citrus canker, managementAbstract
Four species of bacteria (Bacillus subtilis, B. polymyxa, Pseudomonas fluorescens and Serratia marcescens) and 3 species of fungi (Aspergillus terreus, Trichoderma viride and Trichoderma harzianum) isolated from the phylloplane of lemon cv. Assam lemon, inhibited in vitro growth of Xanthomonas campestris pv. citri, the incitant of citrus canker. When the antagonists were tested for their efficacy in the control of citrus canker by applying them over crop foliage of Assam lemon, they also reduced citrus canker incidence under field conditions. B. subtilis was the most effective antagonist exhibiting max. (14.7 mm) inhibition of the pathogen and reducing the disease incidence by 61.9%.
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