The emergence of the diamondback moth is common throughout the year. The use of bacterial insecticides can effectively control the diamondback moth. For lepidoptera pests such as Plutella xylostella, it is better to control them with bacterial insecticides. There are many types of bacterial insecticides, and domestically the most efficient Bt is Bacillus thuringiensis.
The commonly used dose is 8000 IU/mL per mu, diluted by 500-1000 times spray. In the application of bacterial bactericides, technical points to note: the application dose should not be too high or too low, focusing on the prevention and treatment of young larvae, especially 1 to 2 larvae; avoid spraying at high temperatures, preferably in the sunny afternoon or On cloudy days, when the temperature is lower than 15°C, it is not appropriate to apply pesticides; spray the leaves on the back.
YT-H008
YT-H008
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