Preliminary report on diseases and insects occurrence of artificially

Sophora flavescent is Chinese traditional herb medicine as well as the main plants that are used in the production of biopesticides. However, very rare studies on its diseases and insects are available. This study researched the major species and dynamics occurrence of diseases and insects on potted S.flavescens and field cultivation plants in experimental stations of Lanzhou area, in order to cope with the risk of diseases and insects in the process of culturing the plant. The results found that two fungal diseases and one defoliating insect, in which disease incidence of powdery mildew (Oidium sp.) in field experiment on S. flavescens from Hebei was 6%30%, and less than 2% from Henan, Min county and Cheng county of Gansu. While, 94.4% potted plants from Min county were infected. The disease appeared in July, and peaked in middle September. Leaf spot (Phyllosticcta sophoricola) only found in field experiment, 5%34% plants infected. The disease mainly occurred in July. A moth, Uresiphita sp. attacked 92% plants with an average of 4.5 larvas on each plant. This harmful insect mainly consumed leaves during late August to early September. Fortunately, 30% of their larvas were parasitized by Ichneumon generosus.