摘要 : In a field trial conducted in Jabalpur, Rajasthan, India, during rabi 2009-10, five microbial products were tested against chickpea pod borer, H. armigera (Ha). There were 7 treatments comprising Beauveria bassiana at 1.5 kg/ha, B... 展开 In a field trial conducted in Jabalpur, Rajasthan, India, during rabi 2009-10, five microbial products were tested against chickpea pod borer, H. armigera (Ha). There were 7 treatments comprising Beauveria bassiana at 1.5 kg/ha, Bacillus thuringiensis at 1.0 kg/ha, Ha nucleopolyhedrovirus (HaNPV) at 250 LE/ha, Verticillium lecanii [Lecanicillium lecanii] at 3.75 kg/ha, spinosad 45 SC at 73 g/ha, water spray at 555.55 l/ha and control. Two sprays were given per treatment at flowering stage. The mean of two sprayings revealed that all the microbial treatments significantly decreased the larval population. Spinosad was found the most effective, followed by HaNPV, Bacillus thuringiensis, Beauveria bassiana, V. lecanii and water spray, being at par with each other. All the treatments reduced the pod damage significantly, with spinosad being the most effective. The highest yield (19.11 q/ha) was obtained from spinosad, followed by HaNPV, Bacillus thuringiensis, Beauveria bassiana and V. lecanii (16.78, 14.93, 14.81 and 13.27 q/ha, respectively). The highest cost benefit ratio was recorded with Beauveria bassiana (1:17.91), followed by HaNPV (1:12.79) and V. lecanii (1:7.25). 收起