What kind of pesticides are used to control shell insects?

At present, scale insects occur in all parts of China, and the damage degree is becoming more and more serious. From southern fruit crops such as citrus, litchi, mango, etc. to northern fruit crops such as apples, pears, peaches, etc., the damage scope presents a trend that the south is more serious than the north, fruit trees are more harmful than vegetables, flowers are more harmful, and they are the most common and difficult to control pests. So what pesticides are used to control scale insects?

1. What pesticides are used to control scale insects?

1. different periods

During the dormancy period of fruit trees, 3-5.5°Bé sulfur mixture, 3%-5% diesel oil ES or 5%-6% coal tar ES are sprayed; during the growth period, pesticides such as chlorpyrifos 600 times solution and cuoji 800 times solution are used for control.

Spray at the peak of scale nymph. Spray once every 7-10 days for 2-3 consecutive times. It can be sprayed with 40% omethoate 1000 times solution, or 50% malathion 1500 times solution, or 255 imine 1000 times solution, or 2.5% deltamethrin 3000 times solution.

2. different objects

Meaty: In the case of less, you can use toothpicks to clean one by one. Or buy alcohol with a concentration of 75%, then dip it in alcohol with cotton swab, wipe it on the fleshy leaves with scale insects. If there are more scale insects or the situation is serious, we can wipe it every three days. Generally wipe it with alcohol three times, and the scale insects can be cleaned up.

Flowers: 3-5 degrees of sulfur mixture before germination in early spring to eliminate overwintering female insects; spray 300-600 times of 30% acetylmethylamine emulsifiable concentrate when it occurs. Or spray 0.3 degree sulfur mixture in the first generation hatching peak period (May) to destroy the newly hatched larvae, and spray once more when the second generation larvae occur in August.