Inquiries: how can the diamondback moth do not go, what medicine? How to prevent?
Answer: Plutella xylostella is very resistant to insects, and its body is smooth and glabrous. Pesticides are difficult to adhere to. It is believed that young larvae feed on the back of the leaves. In fact, the young larvae of the diamondback moth are concentrated in the young leaves (hearts) of the crop. Due to the curled and stacked leaf protection, the larvae in the heart leaf are difficult to get medication, ie, it is difficult for ordinary manual sprayer sprays to hit insects. How to spray the insecticide on the insect body to let it be taken and kill the insect is the key to the effect of prevention and cure. Using a motorized mist sprayer (powder spraying machine), using the strong wind pressure generated by the fan, and using the wind's wind point effect, the larvae of Plutella xylostella under the middle leaves of the heart can be applied to the larvae of the moth under the middle leaves of the heart. The effect is very good, the drug is best to use avermectin.
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