pyrethrum


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py·re·thrum

(pī-rē'thrŭm),
The root of Anacyclus pyrethrum (family Compositae), a shrub native to Morocco; has been used as a sialogogue; its flowers are a source of pyrethrins.
[G. pyrethron, feverfew, fr. pyr, fire, from the hot-tasting root]
Farlex Partner Medical Dictionary © Farlex 2012

pyrethrum

an INSECTICIDE prepared from the dried flowers of the chrysanthemum plant, the active ingredient being called pyrethrin.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
West Pokot is famous for producing pyrethrum with some of the highest content in the world.
Five min after sprays, Fastac and all the pyrethrins (Pyrethrum 5EW, Pyrethrum EWC, and Agroblaster) caused a higher percent mortality of Antestia bug than that of the neonicotinoid insecticide, imidacloprid (Table 1).
Experimental fields, reported Clay, are testing the efficiency of pyrethrums as part of an integrated pest management strategy.
Extracts of Anacyclus pyrethrum are ethnopharmacologically used to treat various diseases.
Previous chemical studies show that Anacyclus pyrethrum has immunostimuling properties (Bendjeddou, 2010).
This required insight into the behaviour of the malaria vectors and subsequently led directly to indoor spraying with pyrethrum. [13,16]
There is no eco-friendly control, so if you go down the chemical route, Pyrethrum (Py Spray garden insect killer, Bug Clear gun for fruit and vegetables and Doff all in one bug spray) can be used.
From which flower is the insecticide pyrethrum made?
Consumers can choose the botanical Pyrethrum concentrate, derived from dried chrysanthemum flowers, or its synthetic equivalent, containing Permethrin.
The 24-metre square display includes Sempervivum, Pyrethrum Golden Moss, Helichrysum Korma and Senecio Serpens.
Once planted, they come up every year with very little work and many are excellent cut flowers, such as pyrethrum, right, trollius and scabious.