RESEARCH REGARDING COLORADO BEETLE CONTROL (LEPTINOTARSA DECEMLINEATA SAY.) AT POTATOES CROPS THROUGH UNCONVENTIONAL METHODS, IN THE ARDS TURDA CLIMATIC CONDITIONS PUBLISHEDFelicia MUREŞANU, Dana MALSCHI, Adina IVAŞ
Colorado potato beetle (Leptinotarsa decemlineata) is and will remain the main pest of potato crops. It seeks to combat it, more so as enable transmission of the virus X (PVC) and could reach total causing damage, in an attack early harvest losses are possible in 50 to 80% while a later attack, they can reach up to 30%. This pest developed resistance to a wide range of insecticides, which has enhance management studies determined based on a better and more thorough understanding of the ecology pest. În currently there are different methods based on biological products, various chemicals (pheromones) that causes certain behaviors (in this case aggregation) with efficiency superior, clean, reducing the quantities of toxic chemicals in the cultivation of potatoes, there is not resistance (as happens with insecticides), and thus do not affect consumer health tubers of potatoes. The paper presents results obtained at SCDA Turda during 2006-2008, regarding the biotechnical use of unconventional methods of control or limitation under ETD ( Economic Thresholds for Pest ) of the Colorado beetle (Leptinotarsa decemlineata Say.) from the potato crop. This method was tested based on the use of compositions attraction of mentioned pest, obtained at the Institute of Chemistry Cluj-Napoca, which were used as traps for beetle aggregation pheromone in Colorado; two variants were synthesized pheromone of aggregation, V1-PEG and V2 -ExFr. Adults to follow this pest abundance and frequency of attack (%) in each variant. These aggregation pheromones are effective and can be introduced in the management of integrated control in potato .Finally, using this method biotech (aggregation pheromones) to reduce chemical treatments necessary to combat pest and therefore useful to protect useful fauna.
biotechnics method, aggregation pheromone of the Colorado beetle, population density, abundance of adult