pyrethrin वाक्य
उदाहरण वाक्य
मोबाइल
- A common formulation of pyrethrin is in preparations containing the synthetic chemical piperonyl butoxide : this has the effect of enhancing the toxicity to insects and speeding the effects when compared with pyrethrins used alone.
- The active ingredients are extracted with organic solvents to give a concentrate containing the six types of pyrethrins : pyrethrin I, pyrethrin II, cinerin I, cinerin II, jasmolin I, and jasmolin II.
- The active ingredients are extracted with organic solvents to give a concentrate containing the six types of pyrethrins : pyrethrin I, pyrethrin II, cinerin I, cinerin II, jasmolin I, and jasmolin II.
- The Carrs settled in the Belgian Congo in 1949, and after their divorce Rosamond settled in Mugongo, Rwanda to run a plantation growing pyrethrum flowers to produce pyrethrin, an organic insecticide sought the world over.
- Eradication efforts may include manual removal, clearing cultivated areas of litter, debris, and infested plants, and application of pyrethrin-containing insecticides such as Cyfluthrin or non-systemic organphosphate insectsides such as malathion.
- During World War II, Mr . Cole was a member of the War Chemical Board and pioneered the artificial synthesis of pyrethrin, used as an insecticide by the U . S . Navy in the South Pacific.
- It is the most potent knockdown pyrethroid ( even stronger than pyrethrin II ) but it is relatively unstable, especially when exposed to light ( due to both the furan ring and the thiolactone group in the molecule ).
- Tarnished plant bugs can sometimes be controlled with hand picking _ go out early in the morning, when they are still sluggish _ or insecticidal soap, but if the infestation is heavy you may have to resort to a pyrethrin-based insecticide.
- We like to see people take the less toxic approach and use a pesticide bait ( available at feed and grain stores, nurseries and discount centers, such as Wal-Mart ) or one of the botanical products available, such as pyrethrin,
- Application of pyrethrin ( or pyrethroid ) insecticides has been suggested'as a narcotic and a toxicant, which prevents the tick from injecting its saliva'but with this method the tick may remain physically attached for 24 hrs before it drops off dead.
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