Q: Jianyang Town, Jianhu County, Xujiang: 500 acres of greenhouses in the flowering period of the strawberry, the field of ground hazards, eat strawberries seeds and flowers, how to prevent?
Answer: For the control of the ground tiger, the larvae should be taken before the third instar. Most of the old larvae drilled into the soil hazards, and the drug resistance is strong, and the effect of pesticide control is poor. General polyester cypermethrin, deltamethrin and other polyester pesticides and phoxim, chlorpyrifos and other organic phosphorus pesticides have better control effect on the tigers, water spray can be, phoxim and chlorpyrifos can also be mixed with poisonous soil applicator . For old larvae, you can use the above-mentioned chemicals to add water to the roots, or you can use poison baits to kill. Generally use 90% crystal trichlorfon 500 g or 50% phoxim EC 500 ml of water 2.5 to 5 kg, mix 50 kg of crushed sauteed wheat bran and other baits made into the bait in the field, 5 kg per bait with bait .
The newly introduced chlorantraniliprole of DuPont Company has good control effect on various insect pests including earth tigers, and it has certain internal absorption conductivity, long effective period, and good control effect. Human and animal toxicity is extremely low (toxicity is lower than that of salt). For the above-mentioned strawberry at flowering stage, it can be considered to use this medicine to control the tiger.
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