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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Comparsion of treated logs and pheromone traps on spruce bark beetle in hills
 Petrák, Karel ; Holuša, Jaroslav (advisor) ; Lukášová, Karolína (referee)
Purpose of this thesis was comparing of spruce bark beetle (Ips typographus) trapping methods in uplands. In six areas in region of Neveklov, there were installed pairs of devices, namely a slot trap type Theysohn and a poisoned tripod trap tree with pheromone evaporator. During the swarming activity of bark beetles, from April to the end of September 2015, the traps were controlled and bark beetles captured and counted. Evaluation is based on laboratory determination, number of captured beetles and determination of sex ratio. It was also made an economical comparison of both methods. During this study was captured in total 34.495 pieces of spruce bark beetle in two generations. Statistically there was no difference between number of captured beetles into slot traps or into tripod traps.
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Husserl´s phenimenological Reduction
 PETRÁK, Karel
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