Management of Both Powdery Mildew Diseases and Pest-Insects on Vegetable Plants using A Single Microbial Agent

Masaharu Kubota

The Ministry of Agriculture, Forestry and Fisheries Japan put out a policy as use of chemical pesticides decrease to 50% of values assessing risk of each pesticide to humans until 2050. Bio-pesticides are evaluated to have low risk and are expected to increase the use. A bio-insecticide confirmed to control powdery mildew diseases on vegetable plants in this study. The agent ‘BotaniGard ES’ includes a Beauveria bassiana strain as the effective ingredient. Several test cases controlling the disease with the agent was counted and the agent was legally registered to be used for the disease additive to pest insects in Japan. Expanding a range of target pests including diseases and insects is very desirable for increasing the value of a pesticide. The ingredient fungus in ‘BotaniGard ES’ presumed to induce local resistance to plant leaves. In farming conditions for tomato and strawberry in greenhouses, methods of using the agent were considered. Effects of the agent were enough to control both the disease and issued pest-insects when the agent was used once a week at low severity or density of the disease and pest insects. The agent intensified the effect of controlling chemical-resistant pest insects and do not affect predatory mites as enemies to pest mites. After more valuable information on the bio-agents including ‘BotaniGard ES’ and others will be accumulated, bioagents would be more useful.

Keywords: Beauveria bassiana-based bioagent, induced resistance, tomato, strawberry

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