Vangi kama ni huu mbona kwangu upo na mbu nikama vile sikukuu
Inawezakana ni porojo maana sina scientific explanation. Lakini niliambiwa ni mti wa kufukuza mbu na mbu siwaoni. Hivyo tu . Picha zaja soon.
There are also a few flowers and trees that also quality as mosquito repellent plants. These include pine and cedar trees and geraniums, daisies and chrysanthemums. In fact a very powerful commercial insecticide called pyrethrum is made from a member of the daisy [COLOR=blue !important][COLOR=blue !important]family[/COLOR][/COLOR] called Chrysanthemum cineranifolium. pyrethroid. It does not repel insects but works as a contact insecticide, causing [COLOR=blue !important][COLOR=blue !important]nervous [COLOR=blue !important]system[/COLOR][/COLOR][/COLOR] toxicity that leads to the death of the insect. see http://www.worldvillage.com/mosquito-repellent-plants
[FONT=Times New Roman,Georgia,Times][FONT=Times New Roman,Georgia,Times][FONT=Times New Roman,Georgia,Times]Handmade Organic Mosquito Repellent (HOMeR)[/FONT]
[FONT=Times New Roman,Georgia,Times]The abandoned ricefields in our valley on Lantau Island breed hordes of fierce mosquitoes, and at dusk they attack in force. But it's hard to tell which is worse, the mosquitoes or the commercial repellents.[/FONT]
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[FONT=Times New Roman,Georgia,Times]Two weeks earlier we cut this lemon grass to the height of Midori's hand[/FONT]The mosquitoes are horrific -- they're highly aggressive, you can be bitten hundreds of times without protection, it's torture, impossible to bear.
But the commercial repellant sprays mostly use diethyl-meta-toluamide (DEET), a nasty chemical that can cause rashes, swelling, eye irritation, and worse problems, though they're unusual -- including brain swelling in children, anaphylactic shock, low blood pressure, and one report of death. It hasn't had any of those effects on us (yet), but it's horrible stuff to have on your skin -- and with these mosquitoes you have to cover every single square inch of exposed skin. They'll even bite you right through a T-shirt or sockshttp://www.journeytoforever.org/edu_homer.html[/FONT]
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Tropical forest tree is source of new mosquito repellent as effective as DEET
mongabay.com
February 05, 2009
Isolongifolenone, a natural compound found in the Tauroniro tree (Humiria balsamifera) of South America, has been identified as an effective deterrent of mosquitoes and ticks, report researchers writing in the latest issue of Journal of Medical Entomology.
Derivatives of the compound have long been used as fragrances in cosmetics, perfumes, deodorants, and paper products, but new processing methods may make it as inexpensive to produce as DEET, a potent and widely available synthetic insect repellent that works by blocking the aroma of human sweat.
The authors, led by Aijun Zhang of the USDA's Invasive Insect Biocontrol and Behavior Laboratory, found that isolongifolenone deters the biting of the mosquitoes Aedes aegypti and Anopheles stephensi "more effectively than the widely used synthetic chemical repellent N,N-diethyl-3-methyl benzamide (DEET) in laboratory bioassays" and repels blacklegged ticks and lone star ticks "as effectively as DEET".
Since "isolongifolenone is easily synthesized from inexpensive turpentine oil feedstock," the authors write, "we are therefore confident that the compound has significant potential as an inexpensive and safe repellent for protection of large human populations against blood-feeding arthropods."
Tauroniro - which is also known as Bastard bulletwood, Oloroso, Couramira, or Turanira - is found in marshy forests in the Guianas, Colombia, Venezuela, and the Brazilian Amazon, according to the U.S. Forest Service.
A. Zhang et al. Isolongifolenone: A Novel Sesquiterpene Repellent of Ticks and Mosquitoes. Journal of Medical Entomology, Volume 46, Number 1, January 2009 , pp. 100-106(7)
http://news.mongabay.com/2009/0205-repellent.html
<H1>Garlic Successful as Natural Insect Repellent
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Bedford Hills, NY -April 2, 2002-Garlic has been useful as a spice for a very long time, and it is often utilized for an ever-growing list of curative properties. However, the most interesting use for garlic may not be the most well known. Garlic makes a powerful natural insect repellent.
Garlic can be used to repel a variety of crawling and flying insects, including mosquitoes," according to Patrick Parker , SavATree Plant Health Care Program Director. One treatment with garlic is effective for 2 weeks and can repel insects for up to one month. Moreover, garlic is easy on the environment. Parker states, "It is a natural extract and does not affect insects that are beneficial to suburban landscapes."
Garlic bulbs contain an amino acid that converts to a substance called allicin when crushed, blended or chopped. The characteristic odor released as a result of this process has powerful properties. "When garlic extract is absorbed by a plant, biochemical changes take place in its foliage which cause it to actively repel insects," says Parker, "In short, plants are provided with a long-lasting case of ‘garlic breath' that causes insects to move elsewhere." However, the treatment is odorless to humans within minutes of application.
Insects are naturally repulsed by the presence of the botanical extract. Therefore, they do not build up a resistance to garlic treatments. Garlic can also be applied to many sensitive trees, shrubs and turf that traditional treatments would harm. Parker added, "I get excited whenever a natural solution produces results that are effective enough to compete on a large scale with synthetic products." http://www.savatree.com/garlic-insect-repellent.html
ooooh, ngoja nikautafute faster!
Wajuzi wanipunguzie jamani. NAona limekuwa too big.
View attachment 8139
Waheshimwa wataalam mmeuona mmea wenyewe? Tupeni manondo basi.
Wajuzi wanipunguzie jamani. NAona limekuwa too big.
View attachment 8139
Unaweza kunipa maelezo ya ziada, i) huu ni mti au shrub au herb, ii) una harufu yeyote unatoa? kama ndio ni harufu gani?
Ukinipa maelezo hayo itasaidia botanist kutambua haraka zaidi