Flight dynamics cherry fruit fly (Rhagoletis cerasi L.) and damage to the different cherry assortments

Trešnjina muha (Rhagoletis cerasi L.) je najopasniji i najvažniji štetnik trešnje, a koji napada i višnje. Trešnjina muha proširena je na cijelom području uzgoja ovih vrsta u Republici Hrvatskoj. S obzirom na činjenicu da je trešnjina muha isključivo tehnološki štetnik koji napada samo plodove uzrokujući njihovu „crvljivost“, posljedica pojave muhe odnosno napad rezultira lošom kakvoćom plodova, podložnosti truljenju, manjom količinom soka kod višanja. Na fakultetskom pokušalištu Jazbina provedeno je praćenje dinamike leta trešnjine muhe pomoću vizualnih mamaca odnosno žutih ljepljivih ploča. Uz praćenje broja ulovljenih muha na pločama, korišteni su i podaci Državnog hidrometeorološkog zavoda za postaju Maksimir u zbrajanju efektivnih temperatura tla potrebnih za razvoj štetnika. Na temelju dobivenih rezultata praćenja dinamike leta trešnjine muhe u 2017. godini pomoću žutih ljepljivih ploča, nije utvrđena prisutnost trešnjine muhe (Rhagoletis cerasi L.) na fakultetskom pokušalištu Jazbina, te na svim ostalim istraživanim područjima (vrt Zavoda za Voćarstvo, Lašćina). Razlog odsutnosti odnosno nepojavljivanja trešnjine muhe mogu biti uzrokovani različitim čimbenicima, od kojih su svakako najvažniji klimatski uvjeti o kojima ovisi razvoj kukuljica u tlu do odraslog oblika. S obzirom da nije zabilježen let trešnjine muhe na lokalitetu Jazbina, kao niti u Maksimiru i na Lašćini, pokušalo se tražiti ličinke trešnjine muhe u plodovima trešnje s drugih lokaliteta; prilikom očitavanja pokusa 12. lipnja 2017. utvrđene su četiri ličinke u plodovima trešnje sakupljanih sa područja grada Čazme, u Bjelovarsko-bilogorskoj županiji.Cherry fruit fly (Rhagoletis cerasi L.) is the most important and most dangerous pests treasure. Attack and cherry and marasch. Rhagoletis cerasi L. has been expanded throughout the area of breeding of these species in the Republic of Croatia. Due to the fact that cherry fruit fly is only a technological pest attacking only the fruits by causing their "crunchiness", the result of fever or attack results in poor fruit quality, susceptibility to rotting, lower amount of cherry juice. The Jazbina faculty's experiment was conducted to monitor the dynamics of flywheel flight by visual bait or yellow sticky boards. In addition to tracking the number of catches flies on the boards, the data of the Meteorological and Hydrological Service for Maksimir station were used in the collection of the effective soil temperatures required for the development of pests. Based on the results of monitoring flight dynamics cherry fruit flies in 2017 using yellow sticky boards, did not contain cherry fruit fly (Rhagoletis cerasi L.) on experimental college Jazbina, and to all other investigated areas (Garden of the Institute of Pomology, Lašćina). The reason for the absence or failure of the cherry fruit fly can be caused by various factors, of which the most important climatic conditions depend on the development of pupae in the soil to the adult form. Since there was no registered cherry fruit fly on the locality Jazbina, as in Maksimir and Lašćina, attempts were made to look for larvae cherry fruit fly in the fruits of cherries from other localities; during the experiments on June 12, 2017, four larvae were harvested in cherry fruits collected from the area of Čazma, in Bjelovar-Bilogora County