APAKAH MAKSUD PYRETHRIN dalam CORSICA?
Pyrethrin
Pyrethrins adalah sejenis sebatian organik semulajadi yang biasanya berasal dari Chrysanthemum cinerariifolium yang mempunyai aktiviti insektisida yang kuat. Pyrethrins adalah neurotoxins yang menyerang sistem saraf semua serangga. Apabila terdapat dalam jumlah yang tidak membawa maut kepada serangga, mereka masih kelihatan mempunyai kesan penghalau serangga. Pyrethrins secara beransur-ansur menggantikan organophosphates dan organochlorides sebagai racun perosak pilihan pertama. Mereka tidak berterusan, menjadi biodegradasi, dan memecahkan pendedahan kepada cahaya atau oksigen. Struktur kimia pyrethrins mengilhami pengeluaran pelbagai insektisida sintetik yang dipanggil pyrethroids, seperti bifenthrin, permethrin, dan cypermethrin.
Definisi pyrethrin dalam kamus Corsica
Takrif pyrethrin dalam kamus juga disebut: pyrethrin I. suatu senyawa yang tidak larut air berminyak yang digunakan sebagai racun serangga. Formula: C21H28O3. Takrifan lain pyrethrin juga dipanggil: pyrethrin II. sebatian struktur dan tindakan kimia yang serupa, juga terdapat di pyrethrum. Formula: C22H28O5.
CORSICA BUKU YANG BERKAIT DENGAN «PYRETHRIN»
Ketahui penggunaan
pyrethrin dalam pilihan bibliografi berikut. Buku yang berkait dengan
pyrethrin dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
1
The Organic Gardener's Handbook of Natural Insect and ...
Precautions: Pyrethrin insecticides are moderately toxic to mammals. They will
kill lady beetles but do not appear to be harmful to bees. Be aware that many
commercial products contain the synergist piperonyl butoxide to enhance the
toxicity ...
Barbara W. Ellis, Fern Marshall Bradley, Helen Atthowe,
1996
2
Pesticide Residues in Food - 2001: Evaluations. Residues
Field Phase for LX 11 80-02 (Pyrethrin + Piperonyl Butoxide) Raw Agricultural
Commodity Trials on Citrus in Florida, California, Texas, and Arizona. Paragon
Global Services Study No. 18001A014. Unpublished. Hattermann, D.R. 1994b.
3
Georgis' Parasitology for Veterinarians
Pyrethrins The flower head of the pyrethrum plant Chrysanthemum
cinerariaefolium contains six closely related insecticidal substances (pyrethrin I
and II, cinerin I and II, jasmolin I and II) that are known as pyrethrins. Pyrethrins
are rapidly ...
Dwight D. Bowman, Jay R. Georgi,
2009
4
The Mode of Action of Organic Insecticides
Relation of chemical structure to toxicity- -Staudinger and Ruzicka (1924)
showed that, while the pyrethrin esters were highly toxic to certain insects, the
alcohol pyrethrolone and the two carboxylic acids in the uncom ined form were
nontoxic.
5
Small Animal Toxicology
Pyrethrins and Pyrethroids Pyrethrin is the oldest used botanical insecticide. It is
made from the dried and ground flowers of Chrysanthemum cinerariifolium (Color
Plate 20-1). Pyrethroids are synthetic derivatives of pyrethrin and are widely ...
Michael Edward Peterson, Patricia A. Talcott,
2012
6
Lewis' Dictionary of Toxicology
Robert Alan Lewis. 871 872. pyrethrin I pyridine 1roenteritis and CNS
disturbance and may include diarrhea, nausea, vomition, tinnitis, headache,
numbness of tongue and lips, syncope, hyperexc ttability, incoordination,
convulsions, ...
7
The Gardener's Guide to Common-sense Pest Control
Pyrethrin refers to the active-ingredient compounds that occur in the flowers.
Pyrethroid refers to synthetic compounds that resemble pyre- thrins in chemical
structure but are more toxic to insects. They are also far more stable in the
presence ...
8
Encyclopedia of Parasitology: A-M
Pyrethrins Important Compounds Pyrethrin I, Pyrethrin II, Cinerin I, Cinerin II,
Jasmolin I, Jasmolin II. General Information Pyrethrum comprises a mixture of
naturally occurring pyrethrins (pyrethrin I, pyrethrin II, Jasmolin I, Jasmolin II,
cinerin I, ...
9
Pesticide Residues in Food - 2000: Evaluations 2000. Part 1 ...
Field Phase for LX1 180-02 (Pyrethrin + Piperonyl Butoxide) Raw Agricultural
Commodity Trials on Citrus in Florida, California, Texas, and Arizona. (Amended)
Paragon Global Services Study No. 18001 A014 Vol. I. Unpublished. Hattermann
...
Food and Agriculture Organization of the United Nations,
2001
10
Pesticides, Man and Biosphere
Kenya, Tanzania, Tasmania and other East African countries produce about 85%
of pyrethrin for the world market. The flowers of T. cinerariifolium after flowering
contain maximum pyrethrin content and they are handpicked, dried in sun or ...
O. P. Shukla, Omkar, A. K. Kulshretha,
1998
BARANGAN BERITA YANG TERMASUK TERMA «PYRETHRIN»
Ketahui apa yang diterbitkan oleh akhbar nasional dan antarabangsa dan cara istilah
pyrethrin digunakan dalam konteks perkara berita berikut.
North Platte To Begin Mosquito Fogging Next Week
Using a pyrethrin material. Pyrethrins are derived from a natural source and are widely used for mosquito control. The spray leaves no residual. North Platte ... «knopnews2, Jun 15»
Pediatricians Update Their Recommendations on Best Ways to …
One common anti-louse ingredient in over-the-counter products is pyrethrin or a combination of pyrethrins and piperonyl butoxide. Prescription products may ... «Youth Health Magzine, Jun 15»
Fruits, vegetables need special care in spring
Garden sprays that contain pyrethrin or synthetic pyrethrins are usually a good option. Do not spray plants in bloom and spray at sunrise or sunset when bees ... «Las Vegas Review-Journal, Apr 15»
Do You Know What's on Your Weed?
I found two somewhat troubling substances on the list: pyrethrins and their trusty sidekick piperonyl butoxide (PBO). Pyrethrin is listed on PAN's "bad actors" list, ... «TheStranger.com, Apr 15»
Tick-killing robot inventors open business office in Wilmington
"The ticks are pretty certain it's a creature," he says, adding that the robot then delivers a kick of a substance called pyrethrin. Ticks, attached to the skirt, absorb ... «Triangle Business Journal, Mac 15»
Gardeners, prepare to fight pests
Insecticides, including broad-spectrum, persistent materials such as pyrethroids, lower toxicity products such as oils, and botanicals such as pyrethrin or ... «Sacramento Bee, Jan 15»
January and you still have head lice!
These include the FDA-approved OTC medications containing the active ingredients permethrin and pyrethrin. The other medications in this group are still ... «Clinical Advisor, Jan 15»
[In the Field] Changes in Perimeter Pest Management
To minimize runoff and drift concerns, the U.S. EPA established the pyrethroid and pyrethrin labeling initiative. Two sections of the labels are affected ... «PCT Magazine, Okt 14»
Muggenverdelging met pyrethrin
Volgens de National Pesticide Information Center (NPIC) is pyrethrin een plantenextract. “Het inhaleren van pyrethrin kan echter wel leiden tot hoest, piepende ... «Versgeperst.com, Okt 14»
Head lice: Most-used treatments no longer very effective, scientists say
Natural pyrethrin formulations, made from chrysanthemums, were introduced in ... for the treatment failures encountered with pyrethrins- and pyrethroid-based ... «CBC.ca, Sep 14»