Is dichlorvos effective against thrips?
Dichlorvos is a highly toxic pesticide, which is often used to control crop pests. Does it have any effect on thrips? Is there any other way to prevent it?
Does dichlorvos have any effect on thrips?
Dichlorvos is effective against thrips. However, the use of dichlorvos to control thrips is generally cultivated in protected areas. When the number of thrips is large, 250 grams / square meter of dichlorvos smoke can be selected in overcast and rainy weather or after watering in the shed.
Second, what are the control methods of thrips?
1. Agricultural prevention and control
(1) reduce the source of insects: remove weeds and withered branches and leaves in the field in early spring, burn them or bury them deeply, and eliminate overwintering adults and nymphs.
(2) strengthen management: pruning and branching in time, watering frequently, weeding frequently, strengthening fertilizer and water management, increasing application of organic fertilizer and phosphorus and potassium fertilizer, promoting plant healthy growth, and improving plant resistance.
(3) mulching with plastic film (especially black plastic film), on the one hand, can increase the ground temperature and promote the growth of seedlings, on the other hand, it can prevent thrips from entering the ground to pupate and reduce the emergence rate of adults.
two。 Physical prevention and cure
Making use of the blue habit of thrips, set up blue sticky plates in the field to trap and kill adults, and the sticky board height is the same as that of crops.
3. Chemical control
(1) after seedling completion and 1-2 days before planting, the seedlings were treated with 60% imidacloprid suspension seed coating or 70% thiazine suspension seed coating, respectively, the harm of thrips in seedling stage could be controlled, and the period of validity was more than 100 days. The control effect is significant.
(2) choose 2000 times imidacloprid wettable powder or 5% acetamiprid wettable powder 2500 times, 10% imidacloprid wettable powder 1000 times or 20% toxic ·pyridine EC 1500 times, 4.5% high chlorine EC 1000 times with 10% imidacloprid wettable powder 1000 times, 5% deltamethrin 1000 times mixed spray, quick effect and long duration. In order to improve the control effect, pesticides should be used alternately. In spray control, it should be comprehensive and meticulous to reduce the residual insect population.
Dichlorvos can be used in the control of thrips, but it should be selected according to the specific situation.
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