Control Methods and Technical Key Points for Silkworm Pesticide Poisoning

After silkworms suffer pesticide poisoning, they generally show symptoms such as restless crawling, swelling of the thoracic region, rearing up, vomiting fluid, trembling, and shortening of the body.

After poisoning by organophosphorus pesticides (trichlorfon, dichlorvos, etc.), the silkworm's abdominal legs twitch, the front half of the body swells and elongates, and the rear half shrinks, especially with the tail becoming shortened and smaller and tilting upward toward the back.

After poisoning by organonitrogen pesticides (chlordimeform, bisultap, etc.), the main symptoms are spinning silk, crawling toward the edge of the rearing bed, and obvious refusal to eat; after crawling for some time, the thoracic region becomes transparent and the silkworm slowly dies. After death, it does not rot immediately, and the skin appears wrinkled.

Preventive measures:

When spraying pesticides in mulberry fields to control pests, pesticides with a short residual effect period must be used.

For mulberry fields that have been sprayed with pesticides with a longer residual effect period, to ensure safety, leaves should be picked in advance for test feeding.

Prevent mulberry leaves from being contaminated when crops near mulberry fields are sprayed with pesticides for pest control.

At the same time, strictly prevent silkworm rearing rooms, silkworm rearing tools, and @#@250@#@ supplies from coming into contact with pesticides.

After silkworm rearers come into contact with pesticides, they must wash carefully and change clothes and shoes before entering the silkworm rearing room to work.

When poisoned silkworms are found, burnt chaff should be spread promptly, nets should be added to remove excrement, and non-toxic mulberry leaves should be fed. At the same time, doors and windows should be opened to strengthen ventilation and air exchange, and every effort should be made to save healthy silkworms or mildly poisoned silkworms.