Q: Han Dongliang, Chelu Town, Gaoyou City: Can eggplant, eggplant, pepper and other eggplant vegetables be treated with pendimethalin before transplanting? What pharmaceuticals can be used to control cowpea leaf miners? When is medication?
Answer: Pendimethalin can be used for soil sealing before transplanting solanaceous vegetables, but it cannot be used for nursery fields. Generally, before transplanting, use 350-200 ml of pendimethalin EC per acre and spray 40-50 kg of water per acre, and use 100-150 ml per mu for a plot with low organic matter content.
The drugs currently registered for the control of leaf miners are chlorpyrifos, avermectin, emamectin benzoate, beta-cypermethrin, insecticidal weed, dimehypo, cyromazine and so on. Prevention and control of leaf miners should be taken before, during and after the control strategy to achieve scientific medicine. Grasp the spray at the peak of the young instar larvae of the leaf miner (1-2 ages) and the culvert not exceeding 2 cm.
Cimetidine and DuPont's new drug, chlorantraniliprole, have good internal absorption properties and good efficacy against Lathyris subfida. It has a long duration and can be preferred.
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