Background. This study evaluated dose-response, persistence, irritancy and wash resistance of mosquito nets treated with a synergized natural pyrethrins-formulation against Anopheles gambiae s.s. Methods. Multi-filament polyester netting was impregnated to deposit doses of pyrethrins equivalent to 75 mg/m2, 100 mg/m2, 250 mg/m2, 500 mg/m2, and 1000 mg/m2. Dose-response, persistence, and wash re...

Pyrethrins are the most widely used insecticide class in olive groves with organic management. Although there data sets about insect pests of stored products and human parasites developing resistance to pyrethrins, is no information on long-term effect agroecosystems. A field method based experimental induction sublethal effects by means application, monitoring response insects through post-tre...

Pyrethrum is a perennial herbaceous plant endemic to the eastern coast of Adriatic Sea, and introduced in large areas nearly all continents, where it cultivated for industrial extraction pyrethrins. Pyrethrins are group six closely related monoterpene esters, widely used as natural insecticides. The world production pyrethrins lower than market demand, wider introduction this crop within Medite...

Just as houses are made of stones, so is science made of facts. But a pile of stones is not a house, and a collection of facts is not necessarily science. Bugged by Automatic Sprayers Automatic insecticide dispensers are designed to keep restaurants, schools, and other public settings free from annoying and unsanitary flying insects. They may also do something else: sicken at least some of the ...

Pyrethrins are terpenoid esters derived from the flowers of Chrysanthemum cinerariifolium. The pyrethrin family includes six similar compounds containing a cyclopropane core, named pyrethrin 1 and 2, cinerin 1 and 2 and jasmolin 1 and 2. Pyrethrins both repel and kill insects by delaying the closure of voltage-gated sodium ion channels in the nerve cells. The insecticidal and insect repellent p...

BACKGROUND There are many different types of pediculicides available OTC in Australia. In this study we compare the efficacy and safety of three topical pediculicides: a pediculicide containing melaleuca oil (tea tree oil) and lavender oil (TTO/LO); a head lice "suffocation" product; and a product containing pyrethrins and piperonyl butoxide (P/PB). METHOD This study was a randomised, assesso...

Hard red winter wheat was treated with pirimiphos-methyl at 4, 6 and 8 mg kg(-1), synergized pyrethrins at 0.38, 0.75, 1.13 and 1.5 mg kg(-1), and combinations of the two insecticides, to conduct laboratory bioassays against four beetle pests of stored grain, red flour beetle Tribolium castaneum (Herbst), rusty grain beetle Cryptolestes ferrugineus (Stephens), lesser grain borer Rhyzopertha dom...

According to the European Directive 2009/128/EC and subsequent provisions activated in member states, conventional pesticides should be progressively replaced by “non-chemical tools and/or measures”. The identification of reliable alternatives is crucial achieve this objective. A project (PURE) was funded investigate topic with reference annual perennial crops. In framework, a number natural in...