Identification of Anthracnose of Camellia oleifera in Southeast Guizhou and Laboratory Toxicity Determination of Control Agents
In order to identify the main cause of Camellia oleifera anthracnose in Southeast Guizhou,the indoor toxicity of targeted control agents was studied.In this experiment,the leaves of Camellia oleifera anthracnose from three main producing areas of Guizhou province were isolated and cultured to obtain the strain,which was identified and tested for drug toxicity in laboratory.The results showed that the pathogen of anthracnose of Camellia oleifera in Southeastern Guizhou was Colletotri-chum fructicola;The six fungicides had certain inhibitory effect on camellia oleifera anthracnose.EC50 values of 30.0%bromobacteria·imitamine and 45.0%imitamine were 0.004 2 mg/L and 0.011 6 mg/L,respectively,showing the best inhibitory effect on camellia oleifera anthracnose.The EC50 values were 2.095 0 mg/L and 6.951 1 mg/L,respectively.Finally,80.0%carbendazim and 32.5%benzoyl·pyrimethanil,with EC50 values of 59.861 8 mg/L and 116.455 5 mg/L.Micramide has the best preven-tion and control effect,and is a broad-spectrum low-toxicity agent,with good application potential.
万方数据
维普
