Abstract
In range of Topliţa forest district, number of butterflies caught in a pheromonal trap, being small, detection is made only using pheromonal method, using different types of traps: panel trap – 30x40 cm, with adhesive on one side; tetratrap trap - lower panel adhesive; funnel trap, soaked with pheromone baits Atralymon produced by Institute of Chemistry Cluj. Instalation of pheromonal traps, is done in every spruce, fir and mixed forest with beech, where spruce and fir have in compozition of forest over 30 %. will not count tree age, in monitoring sistem. Pheromonal traps are installed, before beginning flight butterflies, on july 11 altitudes <800m, on 21 july on altitudes between 800-1400m, and on 26 july on altitudes over 1400m. One pheromonal trap is one „control point” this will receive a serial number in forest lot, will be inscribed in the observations book of field staff, and on to trees which installs the traps, and this will be marked with a circle of paint to be easily identified, and to maintain in every year the same control points. Density of control points varies, depending on the area's vulnerability and depending on population level made in previous years, in Oriental Carpathians will be installed one pheromonal trap/50ha.
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Schedule a callMore From: Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture
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