نتایج جستجو برای: 1022571 the pesticides
تعداد نتایج: 16056393 فیلتر نتایج به سال:
The growing demand for reducing chemical inputs in agriculture and increased resistance to insecticides have provided great impetus to the development of alternative forms of insect-pest control. Entomopathogenic fungi are potentially the most versatile biological control agents due to their wide host range. These fungi comprise a diverse group of over 90 genera with approximately 750 species, ...
for the first time, a multi-residue methodfor simultaneous determination of 41lc-amenable pesticides in rice, belonging to different chemical classes has been developed in iran by lc-ms/ms. the pesticides were analyzed simultaneously in a single run using positive electrospray ionization with multiple reaction monitoring (mrm) after extraction with slightly modified quechers method. the calibra...
background: noticeable amounts of pesticides are used in developing countries each year. however excessive application of these chemicals in the past few decades has breaded serious problems to both animals and humans. although most studies have targeted acute poisoning, in the present study chronic poisoning as a new and important health problem has been studied due to application and storage ...
objective: the usage of pesticides has increased during the recent years. one the other hand, presence of harmful pesticides residue in rice and other food has caused a great concern among the consumers. therefore, it is important to develop some pragmatic procedures to increase the food safety along with the reduction in consumption of pesticide residues. methods: a gas chromatograph with elec...
entomopathogenic fungi may be affected by pesticides used to protect crop plants. the in vitro compatibility of beauveria bassiana and metarhizium anisopliae with three fungicides and 16 insecticides was evaluated. the formulations of pesticides were tested in three concentrations (mean concentration (mc), half mc and twice the mc). all tested fungicides, at three concentrations, were incompati...
Pesticides are very hazardous and lethal for organisms as well as for humans. They present danger to consumers, bystanders and workers during manufacture, transport or, during and after use. Pesticides are also toxic to plants and many food crops, including fruits and vegetables, contain pesticide residues after being washed or peeled. Pesticides decrease the biodiversity in soil and it has bee...
Regarding the public concerns about serious health risks from pesticide, the occurrences of 105 pesticide residues including Organochlorine, Organophosphorus, Organonitrogen, Dicarboximides, Strobilurin, Triazine, Pyrethroids were assessed using a descriptive method in 25 fresh and greenhouse vegetable samples (fresh carrot, greenhouse tomato and cucumber). Ethyl acetate was used for extraction...
An ecological risk assessment (ERA) was conducted for Shadegan Wetland in Iran. The objective of this study was to assess the risk to phytoplankton, zooplankton, invertebrate, insect larvae, and fish affected by pesticide in Shadegan Wetland. Five pesticides (DDT, Aldrine, Dieldrin, Ametryn and Lindane) were assessed to evaluate the impact to aquatic community in the Shadegan Wetland. The risk ...
Pesticides are essential tools in integrated pest management (IPM) programs which can have the great influence if they are used properly. However, the adverse impacts of these compounds on the environment and ecosystem should not be ignored. The ecological effects of pesticides can be discussed from different points of view. Some of the significant consequences of use of pesticides are side eff...
Background and purpose: The present study is aimed to investigate the prediction of the experimental data for the removal of agricultural pesticides including three herbicides Trifluralin, Glyphosate, and 2,4-Dichlorophenoxyacetic acid from aqueous solution by carbon nanoparticles synthesized from pomegranate peel using artificial neural network. Materials and Methods: Removal studies were con...
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