How effective is dichlorvos for controlling thrips?

Dichlorvos is a highly toxic pesticide, commonly used to control crop pests, so is it effective against thrips? What other control methods are there?

1. Is dichlorvos effective against thrips?

Dichlorvos is effective against thrips. But when using dichlorvos to control thrips, it is generally in protected cultivation, when the thrips population is large, during rainy weather or after watering in the greenhouse, dichlorvos smoke agent can be used at 250 g/sq m.

2. What control methods are there for thrips?

1. Agricultural control

(1) Reduce pest sources: in early spring, clear weeds and dead branches and fallen leaves from the field, burn them in a centralized manner or bury them deeply, to eliminate overwintering adults and nymphs.

(2) Strengthen management: prune branches and remove side shoots in time, water frequently, weed frequently, strengthen fertilizer and water management, apply more organic fertilizer and phosphorus and potassium fertilizer, promote robust plant growth, and improve plant stress resistance.

(3) Cover with plastic film (especially black plastic film); on the one hand it can raise the ground temperature and promote seedling growth, on the other hand it can prevent thrips from entering the soil to pupate and reduce the adult emergence rate.

2. Physical control

Taking advantage of the thrips' habit of being attracted to blue, set up blue sticky boards in the field to trap and kill adults; the height of the sticky boards should be level with the crops.

3. Chemical control

(1) After full emergence of seedlings and 1-2 days before planting, respectively drench the seedling bed of the seedlings with 60% imidacloprid suspension seed coating agent, or 70% thiamethoxam suspension seed coating agent, which can control thrips damage at the seedling stage, with a effective period of more than 100 days and a remarkable control effect.

(2) You can choose 25% imidacloprid wettable powder at 2000 times or 5% acetamiprid wettable powder at 2500 times, 10% imidacloprid wettable powder at 1000 times or 20% toxic·acetamiprid emulsifiable concentrate at 1500 times, 4.5% beta-cypermethrin emulsifiable concentrate at 1000 times mixed with 10% imidacloprid wettable powder at 1000 times, 5% chlorfenapyr at 1000 times for mixed spraying, which takes effect quickly and has a long lasting period. To improve the control effect, pesticides should be used alternately in rotation. When spraying for control, it should be comprehensive and meticulous to reduce the residual pest population.

For thrips control, dichlorvos can be used, but the choice should be made according to the specific situation.