The best time to prevent and control white grubs, what medicine is good to kill white grubs

1. Best time to prevent and control white grubs

The best time to prevent and control white grubs is around mid-to-early July each year. This period is when the adult grubs are in full bloom, and it can usually start from mid-June. The severity of the damage is related to the temperature and humidity of the soil. Usually the activity is highest when the soil temperature reaches 13-18 degrees, and the activity will be enhanced when the soil moisture is high.

2. What medicine is good for killing white grubs?

1. When killing white grubs, you can use 50% cypermethrin emulsifiable concentrate. Specifically, add 10 times the amount of clean water and spray it on the soil. Use this agent to mix the soil, and then apply the poisoned soil in the ridges and ditches. This will kill the white grubs. Alternatively, you can use 3% Weibutan granules or 3% methyl isothioate granules.

2. In addition to mixing the soil with drugs, it can also be used to mix seeds. The specific drugs used are 50% parathion, 50% phoxim, and water. The ratio of seeds is 1:30:400. This way, they can avoid damage after planting and can also control some other pests.

3. Other prevention and control methods

In addition to drug control, agricultural control methods can also be used. Do not apply uncomposted organic fertilizer during crop management and compact the soil in time. In areas where this pest is serious, the overwintering larvae are turned to the surface to dry when the soil is plowed in autumn and winter, and they are frozen to death or killed by natural enemies. In addition, physical prevention methods can be used, and black light traps can be set up to reduce the number of occurrences.