this study investigated the effectiveness of heat treatment (50°c, 60°c and 70°c for 1 h and 2h at 75-80% rh) and cold treatment (0°c and-5°c for 24h and 48h) in the control of storage pests in zahedi and piyarom dates. before and after each treatment, the number of surviving adults, larvae, pupae and eggs were recorded and the percentage of infestation was calculated. the dates were treated at...

introduction: the occurrence and activity of mites in stored foods cause a variety of qualitative and quantitative damages, including reduction in the germinating power of the grains, bronchial asthma and allergic skin reactions. among the mites associated with stored products, species of order sarcoptiformes especially some species of astigmatina including the genera acarus, suidasia and tyrop...

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Bacillus thuringiensis (Bt) is a useful alternative or supplement to synthetic chemical pesticides in agriculture, forest management, and control of mosquitoes and some other biting insects. When modified Bt cry genes are inserted into a plant species (e.g., corn, cotton, potato, canola, rice), the plant expresses active larvicidal proteins in its tissues. The toxins continue to be synthesized ...

Contamination of cereal commodities by moulds and mycotoxins results in dry matter, quality, and nutritional losses and represents a significant hazard to the food chain. Most grain is harvested, dried and then stored on farm or in silos for medium/long term storage. Cereal quality is influenced by a range of interacting abiotic and biotic factors. In the so-called stored grain ecosystem, facto...

Many plant extracts or allelochemicals show a broad spectrum of activity against pests and such products have long been touted as attractive alternatives to synthetic chemical pesticides for pest management because they pose little threat to the environment or to human health. The studies available suggest that plant-based materials do affect arthropod pests, vectors and other pathogens, yet on...

Although climate change can cause extreme alterations to ecosystems, only limited research has investigated how altered physical conditions (e.g., warming, extreme temperature events, sea level rise, ocean acidification, and altered precipitation) influence species interactions. In particular, the interplay between host and parasites in such a changing world is in need of study. Our objective i...

The adoption of cotton producing insecticidal proteins of Bacillus thuringiensis, commonly referred to as Bt cotton, around the world has proven to be beneficial for growers and the environment. The effectiveness of this important genetically-modified crop can be jeopardized by the development of resistance to Bt cotton by pests it is meant to control, with the possibility that this phenomenon ...

Background: Lepidopteran and coleopteran species are the most important pests in maize. They can be controlled using genetically modified crops expressing insecticidal Bt-proteins. The long term success of this technology demands a pest resistance management. Important information for a successful management of resistance is the baseline susceptibility of the different targeted pests towards th...

The insecticidal activities of methanolic extracts two weedy plants leaves Bidens pilosa L. and Rumex dentatus at three different concentrations 3, 5 7% were tested against stored grain pests, Rice weevil Sitophilus oryzae Saw-toothed beetle Oryzaephilus surinamensis L., Bean Acanthoscelides obtectus Say, compared to Neem oil as a commercial product the same for exposure periods