pyrethrin उदाहरण वाक्य

Treatment with topic agents such as permethrin or pyrethrin with piperonyl butoxide is exceedingly effective.
This year, Harris County sprayed 2 million acres with a pyrethrin commercially sold as Scourge.
The flowers of " Chrysanthemum " species contain pyrethrin which is a potent insecticide.
The first, pyrethrin, is made from the dried, powdered flowers of the pyrethrum daisy.
This is done because pyrethrin concentration has been shown to increase as elevation increases to this level.

Although pyrethrin is a potent insecticide, it also functions as an insect repellent at lower concentrations.
They were developed as a synthetic version of the naturally occurring pesticide pyrethrin, which is found in chrysanthemums.
Growing these plants does not require much water because semiarid conditions and a cool winter deliver optimal pyrethrin production.
For instance, in Japan, the flowers are hung upside down to dry which increases pyrethrin concentration slightly.
Another organic answer is a mixture of diatomaceous earth and pyrethrin, said Howard Garrett, a Metroplex organics expert.