Effect of bioagents against Colletotrichum capsici on seed quality of chilli

摘要

Species of Trichoderma varied in their antagonistic potential against Colletotrichum capsici in vitro. Pure cultures of Pseudomonas fluorescens and Trichoderma viride at the rate of 1 '10~8 cfu g~(-1) and their talc based formulations 28 ' 10' cfu g~(-1) and 19 ' 10~7 cfu g~(-1)) at the rate of 5 g kg~(-1) and 10 g kg~(-1) of seed were used for seed treatment. The treated seeds were evaluated for per cent reduction of C. capsici seed germination, vigour index. It was found that the maximum control ofthe disease was obtained by seed treatment with pure culture of P. fluorescens + T. viride followed by seed treatment with pure culture of P. fluorescens and T. harzianum. Seed treatment with pure culture of P. fluorescens and pure culture of T. viriderecorded higher yield fruit characters such as fruit length and fruit weight However none was better than fungicide carbendazim at 2g kg~(-1) seeds.