Which pesticide is effective for controlling striped flea beetles?

The striped flea beetle is a common pest during crop growth. Once a crop is bitten, its surface becomes pitted and it loses its commercial value. So which pesticide should be used to control the striped flea beetle?

1. Which pesticide should be used for the striped flea beetle?

For the striped flea beetle, you can use 300 g/L chlorantraniliprole · thiamethoxam suspension concentrate as a soil drench, or use 50 g/L fipronil suspension concentrate at 1500 times + chlorpyrifos at 1000 times as a spray for control. When spraying, try to do it before 10 a.m. or after 5 p.m. When spraying, the leaves should be thoroughly sprayed, and the soil should be moistened.

2. How should the striped flea beetle be controlled?

1. Avoid continuous cropping with cruciferous vegetables; you can rotate with crops such as spinach, lettuce, carrots, and onion and garlic vegetables.

2. After the radish harvest, thoroughly collect the leftover plants and fallen leaves, remove the weeds and burn them, and carry out deep plowing and sun-drying of the soil before sowing, so as to kill some of the pupae, worsen the overwintering environment for the pest, and reduce the damage.

3. When preparing the land, broadcast a flea beetle-killing granular formulation such as 5% carbosulfan granules, which can very effectively kill the flea beetle larvae and adults.

4. Taking advantage of the flea beetle's attraction to yellow, place yellow sticky insect traps in the radish field, 30-40 pieces per mu, which can also effectively reduce the number of adults.

5. Pest control should be done early; start control as soon as there are signs of flea beetle damage. Do not wait until there is a large-scale outbreak to begin control, as by then it treats the symptoms but not the root cause and is difficult to fully bring under control.

6. Combine aboveground and belowground methods to control the flea beetle. Spraying pesticide can only control part of the aboveground population; after underground larvae become adults, they continue to come aboveground to cause damage. Root drenching can kill underground larvae and adults, but the aboveground part is then difficult to control. Only by combining both aboveground and belowground methods can the flea beetle be controlled efficiently and thoroughly.

7. Alternate pesticides to reduce resistance. In Hebei, flea beetle damage is very severe and resistance is very strong. You cannot just keep using one pesticide heavily as soon as you see it is effective, until it no longer works, and only then switch. Combine contact and stomach poisons, and frequently alternate pesticides with different mechanisms of action to improve the duration of effectiveness of different pesticides.

8. The timing for controlling the flea beetle must be correct. If the temperature is relatively high, most adults retreat into the soil at noon, and spraying pesticide makes it very difficult to kill them. It is recommended to spray pesticide in the morning when the adults have just emerged from the soil.