Study on Bacteriostatic Effect of Different Biological Agents on Major Pathogenic Bacteria in Capsicum
In order to screen effective biocides that can also prevent phytophthora blight,root rot and fusarium wilt in capsicum,the inhibitory effects of Trichoderma harzianum,Bacillus subtilis,Pseudomonas fluorescens,Phytophthora enzymes and the chemical agent Carbendazim on phytophthora blight,root rot and fusarium wilt of capsicum were measured at high,medium and low concentrations in laboratory.The results showed that Pseudomonas fluorescens and Trichoderma harzianum could simultaneously prevent phytophthora blight,root rot and fusarium wilt of capsicum.With the decrease of concentration,the bacteriostatic effect of 5 tested agents showed a decreasing trend.At the recommended concentrations,the inhibitory rates of Pseudomonas fluorescens against phytophthora blight,root rot disease and fusarium wilt were 83.11%,89.81%and 78.80%,respectively whereas those in Trichoderma harziana were 88.39%,74.63%and 89.68%,respectively.These two agents can be used as recommended drugs.
PepperPhytophthora blightRoot rotWilt diseasePathogenBiological control