Application research progress of spinosad

At present, spinosad products were widely used on cotton, fruits and vegetables, tea, tobacco, herbs, grain and other crops, the United States since 2004 was approved it registered for mosquito control. Although it has not been approved for registration on storage pests, livestock parasites and other pests’ prevention and treatment, but there are a large number of research reports about spinosad applied to these areas above.

Spinosad has better control effect on lepidoptera, diptera, thysanoptera, coleopteran and other pest, especially have high insecticidal activity on the larvae of lepidopteran pest resistance. And the activity of this drug against lepidopteran larvae is significantly higher than various organophosphorus, carbamate, cyclopentadiene insecticides, equal to pyrethroid.

Researchers use meilingmycin, spinosad, liuyangmycin, avermectin four antibiotics to conduct efficacy trials on diamondback moth, the results show that spinosad (2.5% suspension concentrate) on 2-4 instar larvae of diamondback moth have a better insecticidal effect. The spinosad no ovicidal activity, but use spinosad to control diamondback moth eggs, to the newly hatched larvae have a high killing effect. Studies have shown that spinosad control resistant cotton bollworm, especially on older larvae has significant effect, the lasting period is up to 8 to 10 days, the protecting bud effect is obviously. Other studies have found that spinosad (2.5% spinosad) also has good control effect on rice stem borer and rice planthopper; to spodoptera and diamondback moth has good control effect. Except lepidoptera, spinosad also has good insecticidal activity on the thysanoptera purpose western flower thrips, the diptera western cherry fruit fly, Ceratitis capitata, South American fruit fly and the onion maggot, Acarina carmine spider mites and so on.

Storage pests make harvested crops, inventory goods, books archives suffered heavy losses, for a long time, the chemical pesticides which used to control storage pests have phosphate cyanide, sulfuryl fluoride and other high toxic or high residue pesticides, these pesticide varieties not only makes the pest easy to produce drug resistance, but also prone to pose a threat to human health because of residue problems. People are looking for the efficient, low toxicity, low-residue pesticides to replace them to control storage pests, biological pesticides because of low toxicity, low-residue characteristics were given high hopes. Studies have shown that spinosad can better control indian meal moth, tribolium castaneum, lesser grain borer, rust red flat flour beetle, rice weevil and the Valley saw Pirates, and according to the different pest species, the activity on these stored grain pests is different. Spinosad also can effectively prevent and treat addicted worm gnawing insects book lice, the addicted to bostrychophila, colorless book lice and so on. Studies have shown that spinosad can control a major pest of tobacco borer during storage pink in tobacco finished, and lasting effect, can maintain tobacco finished in the entire storage period largely unaffected by pests.

Mosquitoes, flies and other pests is a media of a variety of infectious diseases, seriously affect human life and physical health. The prevention and control of mosquitoes and flies are mainly used the chemical control for a long time, the control pesticide from the initial organophosphate and carbamate to the current pyrethroid, although the toxicity of the drug continue to reduce, but the resistance problem is more seriously. Spinosad due to its unique mechanism of action, combined with the characteristics of uneasy to produce cross-resistance with other types pesticides, make it catch more attention on the hygiene pests control.

Livestock parasites have a certain impact on the yield and quality of livestock products, and its possible to through livestock products spread harmful bacteria. The medicine used in the prevention and treatment of livestock parasites are required to with low toxicity, readily biodegradable and other characteristics, in order to reduce damage to the livestock. Studies have shown that spinosad to the sheep Lucilia that caused sheep myiasis have good control effect. Studies about spinosad controlling livestock parasite is reported relatively less, but spinosad’s excellent features will undoubtedly have a greater application prospects in the field.

Source:http://www.cospcn.com