Pyrethrum Wiki - What is the pyrethrum?
Pyrethrum was a genus of several Old World plants now classified as Chrysanthemum or Tanacetum (e.g., C. coccineum) which are cultivated as ornamentals for their showy flower heads. Pyrethrum continues to be used as a common name for plants formerly included in the genus Pyrethrum. Pyrethrum is also the name of a natural insecticide made from the dried flower heads of Chrysanthemum cinerariifolium and Chrysanthemum coccineum..
What does the word pyrethrum mean? Find synonyms, antonyms and the meaning of the word pyrethrum in our free online dictionary! Find words starting with pyrethrum and anagrams of pyrethrum.
Definitions of "pyrethrum"
- Any of several Old World plants of the genus Chrysanthemum, such as C. coccineum, cultivated for their showy flower heads. noun
- An insecticide made from the dried flower heads of Chrysanthemum cinerariifolium or C. coccineum. noun
- Any of several perennial African plants of the genus Chrysanthemum, especially Chrysanthemum cinerariaefolium noun
- Any of several insecticides obtained from these plants; pyrethrin noun
- A plant of the genus Pyrethrum; feverfew. noun
- [capitalized] A former genus of composite plants of the tribe Anthemideæ, now included as part of the section Pyrethra in the genus Chrysanthemum, from which it was distinguished by achenes nearly equally from five- to ten-ribbed and crowned with a pappus, characters now known to vary in the same species. noun
- A powdered preparation of pyrethrum, used as an insectifuge. Also called pyrethrum-powder. See insect-powder and buhach. noun
- In pharmacy, the Anacyclus Pyrethrum, or pellitory-of-Spain. noun
- made of dried flower heads of pyrethrum plants noun
- white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum noun
- used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum noun
- spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum noun
The word "pyrethrum" in example sentences
This unique form of incense makes use of a natural plant compound called pyrethrum which is derived from Old World plants of the genus. [WN.com - Business News]
This unique form of incense makes use of a natural plant compound called pyrethrum which is derived from Old World plants of the genus Chrysanthemum.. [WN.com - Business News]
Plant-derived and metallic insecticides such as pyrethrum, lead arsenate and copper sulfate had been tried but did not work well.. [WN.com - Articles related to Banana expo throws light on latest cultivation techniques]
Or investing in the agricultural sector so farmers are more able to meet demand for crops like Artemesia annua and pyrethrum, easily-grown botanical ingredients in anti-malarial drugs?. [Global Voices in English » Global Health: Twitter Face-Off To Fight Malaria]
Mosquitoes seem to be getting used to pyrethrum, the insecticide used to impregnate bed nets.. [Scourge of Humankind]
The British settler her father worked for was furious: who was going to pick his pyrethrum?. [Johann Hari: The Savior of Africa - and the Environment? An Interview With Nobel Prize-winner Wangari Maathai]
More recently, forests have been cleared for banana, bean, and tree tomato farms, while grasslands are converted to cropland for beans, potatoes, and pyrethrum.. [Biological diversity in the Eastern Afromontane]
I guess since the product was natural, the endocrine disruption from an organic product is acceptable and part of the cycle of life, sort of like letting your animals become sick and frail, or using the human nerve-disruptor “organic” pyrethrum as a pesticide, er, I meant “plant input”.. [The Volokh Conspiracy » Organic Food Still Ain’t All That:]
In the past, the main threats were conversion of the habitat to tea and coffee plantations, pyrethrum plantations and to both large - and small-scale farms.. [East African montane forests]
Cultivation poses the other severe threat to the integrity of the ecoregion, as land is increasingly being converted to crops such as tea, coffee, banana, finger millet, potatoes, and pyrethrum.. [Southern Rift montane forest-grassland mosaic]
Production and income from export crops, such as coffee, tea, pyrethrum, horticultural crops and cotton, contribute to food security.. [Water profile of Kenya]
Use encapsulated pyrethrum time-release insecticide for pest control.. [10 quick tips to keep your orchids looking gorgeous]
Copper Sulfate, Nicotine Sulfate, Bt, pyrethrum, Spinosad...the list of fungicides, insecticides and herbicides approved for use by the National Organic Standards Board reads like a toxicology report.. [Christmas trees loaded with pesticides]
In 1968 half of the Parc National des Volcans was taken for pyrethrum cultivation (ironically, grown for use in Europe as an environmentally-friendly alternative to DDT) and there were plans, backed by the European Development Fund, to replace even more of the park with pyrethrum (Harcourt 1981).. [Archive 2006-04-01]
I had to go back to K-Mart and get some pyrethrum spray.. [Archive 2008-03-01]
This product uses pyrethrum as the active ingredient and will kill mosquitoes quickly.. [Archive 2005-10-01]
Pyrethrum TranslatesPyrethrum English to Turkish Translate
i. pirekapan, bot. Pyrethrum.i. pirekapan, bot. Pyrethrum.