نتایج جستجو برای: classical insecticides
تعداد نتایج: 200889 فیلتر نتایج به سال:
fifty percent of world argricultural production is destroyed by insects each year. therefore, enormous quantities of insecticides are consumed to control these pests. as an example, france is using 35000 metric tons insecticide every year. some of the methods used for spraying and applying insecticides tend to increase the pollution of natural waters . in this article different factors causing ...
this study was conducted to investigate commercial formulations of insecticides against western flower thrips, frankliniella occidentalis (pergande).the insects were collected from commercial greenhouses of cucumber in varamin, iran. the tested insecticides were diazinon (ec 60%), cypermethrin (ec 40%), fipronil (ec 2.5%), imidacloprid (sc 35%) and a botanical insecticide oxymatrine (kingbo, as...
Toxicity of 17 commonly used insecticides used to control diamondback moth, Plutella xylostella (L.) was evaluated against adults of Cotesia plutellae Kurdjumov. The insecticide concentrations studied were equivalent to those recommended in the field. Adults of the parasitoid were released into exposure kits with fresh dry insecticide film for 24 hours, at which time mortalities were noted. The...
Background and Aim: insecticides are widely used for protecting of agriculture and stored products. Organophosphorus insecticides are used more than other pesticides in agriculture. Therefore the residue of these insecticides in environment such as water may be hazardous to human health. Golestan Province is one of the important agricultural zones in north of Iran. In this area, azinphosmetyl a...
background: the irritant effect of some insecticides can cause a proportion of mosquitoes to leave the sprayed rooms before acquiring a lethal dose, so the repeated contact al sub-lethal dose may lead to extent the resistance. methods: larvae and pupae of culex pipiens complex were collected in mass from open canals of waste water in capital city tehran and reared to obtain the first generation...
toxic effects of malathion and endosulfan to fertile chicken eggs were determined. in-jection of 1.25, 2.5, 5.0 and 10.0 mg/egg of malathion into yolk sac of fertile eggs prior to incubation caused mortality of 10.0, 30.0, 83.33 and 93.33% respectively. similar trend was observed with injection of endosulfan doses. malathion and endosulfan at 1.25 mg/egg caused no pronounced ld50 increase in mo...
Background and Aim: There are different species of arthropods and rodents in different parts of Iran that are important in terms of medicine and health. To make a proper decision for the control of vectors, it is necessary to have accurate and complete information about the current status of insects control methods for plan and provide appropriate solutions based on it. Therefore, this study ai...
Background and purpose: The medical importance of cockroaches is much greater than what has generally been realized. They are known to carry pathogenic viruses and bacteria such as escherichia coli, Staphylococcus aureus and salmonella species including S.typhi and S.typhimurium. As a result, their eradication is very important. Materials and Methods: One of the best and effective ways of ...
Five insecticides (Bifenthrin, Deltamethrin, Etofenprox, Permethrin and Lamda cyhalothrin) recommended by WHO, at their recommended dose were compared for their efficacy and wash resistance through bioassay against mosquito vectors, Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi. Etofenprox treated nettings exhibited better knockdown and mortality than the other insecticides. The...
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