How to control the dance moth? How to eliminate the dance poison moth

1) Trim. Combined with winter pruning, it eliminates overwintering egg masses.

2) Booby-trap. Adult moths are trapped, and black light is used to trap adult moths during peak emergence.

3) Spraying control. In the larval development stage, 50% pine borer, or 50% phosphine emulsion 1000 1200 times can be sprayed.

Summary. Hello dear, the elimination method of the dance poison moth is as follows: chemical control:

Pesticide control is the fastest effective means, to be controlled in the young larval stage, at this time the insect population density is low, the damage is weak, and the resistance of the larvae is relatively weak, you can spray 80% avermectin 800 1000 times solution, or 90% deltamethrin 1000 times solution, or use Beauveria bassiana powder, 1 2 times, with an interval of 7 10 days. When using pesticides for control, it is necessary to pay attention to the rotation of drugs to avoid pests developing resistance.

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Hello dear, the method of eliminating the dance moth is as follows: chemical control: pesticide control is the fastest effective means, to be controlled in the young larval stage, at this time the insect population density is low, the damage is weak, and the resistance of the larvae is relatively weak, you can spray 80% avermectin 800 1000 times the solution, or 90% deltamethrin 1000 times the solution, or use Beauveria bassiana powder spraying, 1 2 times, with an interval of 7 10 days.

When using pesticides for control, it is necessary to pay attention to the rotation of drugs to avoid pests developing resistance.

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Prevention and control methods of dance moths: manual killing. Autumn or early spring combined with land preparation to kill egg masses; Taking advantage of the larvae's latent nature of laying trees during the day, you can stack stones under the trees to lure larvae under the stones for killing.

Adults can be trapped, with black light trapping at the peak of emergence; Adults can also be killed near tree trunks or in the cracks of weirs.

Pharmaceutical prevention and control. Before the larvae hatch and go up to the tree, apply 50% phoxanthion 50 times or deltamethrin 300 times on the trunk, with a width of 60cm, and apply 1 time to maintain the efficacy for 20 days, and apply 2 times in a row, so that the larvae can die when they touch the drug; Before the larvae go to the tree 2 years ago, they can be sprayed with 3000 times of 5% emulsifiable concentrate.

The dance moth is distributed in the northeast, northwest, north, central, south, southwest and other places. The host is wide, especially poplar, willow, elm, hawthorn, persimmon, wisteria, plane tree, etc.

Morphological characteristics] Adult. Male adults: body length about 20 mm, forewings brown, with a wavy transverse band, outer margin dark band, middle chamber** with a black spot.

Female: about 25 mm long, grayish-white forewings, with a blackish-brown spot between every two veins. There are yellowish-brown hairy tufts at the end of the abdomen.

Ovum. Round and slightly flattened, with a diameter of millimeters, the initial birth is apricot yellow, hundreds to thousands of grains are laid together into egg masses, which are covered with very thick yellow-brown hairs.

Larvae. When mature, the body is 50 to 70 mm long, and the head is yellowish-brown with figure-of-eight black lines. The prothorax to the second abdominal segment are blue, and the 7 pairs of hair tumors in the 3rd and 9th segments of the abdomen are red.

Biological characteristics].

One generation occurs in one year, and the eggs overwinter in the cracks of the rocks or the cracks on the back of the trunk. The overwintering eggs hatch in May of the following year, and the first hatched larvae have the habit of swarming and scattering when they grow up. In order to harm the early and middle of July, the mature larvae form cocoons and pupate in the cracked places of the trunk, branches, dead leaves, etc.

Mid-July is the adult occurrence period, and the male moth is good at flying, and often spun and fly in groups during the day. The eggs are mostly laid on the shady side of the branches, and each female lays 1 2 eggs, each with hundreds of eggs, covered with yellow-brown scales at the end of the abdomen of the female moth.

Prevention and control methods] 1) Egg scraping.

Scrape off egg masses in autumn and winter.

2) Booby-trap. Lamp traps adults; Bunched grass on the trunk traps the larvae and burns them intensively.

3) Pharmaceutical prevention and control.

According to the larvae, they have the habit of going down to the tree during the day and going up at night, and the base of the stem is coated with a poison ring to poison the larvae. Before the 3rd instar, the larvae were killed intensively with conventional agents. The overwintering larvae of poplar and willow poison moth can be poisoned with 1000 times liquid such as 50% octathion emulsifiable concentrate and 50% pine borer emulsifiable concentrate.

4) Biological control.

Protect insectivorous birds, parasitic wasps, flies, and use biological agents such as BT and green worm fungus.

1. Strengthen orchard management Strengthen the management of longan orchard and carry out a thorough cleaning of the orchard. Eradicate weeds, prune longan plants, prune dead branches, residual branches, pests and diseases, and burn them intensively.

2. Artificial egg removal The egg mass of the dance moth has a long incubation period, up to more than 9 months. Egg masses often appear at the base of longan branches or on branches, which are generally easy to find, and can be eliminated by manual pruning and concentrated burning.

3. Trapping adult insects The insect has the characteristics of phototaxis, which can be trapped-by light during the adult emergence.

4. Biological control The release of natural enemies of the dance moth such as the black tumor wasp, the leaf roll moth queen bee, the caterpillar chasing bee, the vast legged wasp, the dance moth flat-bellied wasp or the use of Beauveria bassiana (spores of 10 billion grams, the live spore rate of more than 90%), the dance moth karyotype polyhedrosis virus (3000 times per unit of water, used before the 3rd instar), and the Bacillus thuringiensis solution and 1000 times of water spraying can effectively prevent and control the damage of the dance moth.

5. Chemical control The use of chemical pesticides such as deltamethrin 3000 5000 times, 20% pyrethrin 1000 times, trichlorfon agent, 20% rapid killing, 75% phosphine emulsion 2000 times, emulsifiable concentrate 2000 2500 times, 50% pine moth emulsifiable concentrate 1000 times can also prevent and control the harm of dance moth.