Psyllid Species (Cacopsylla spp.) in Pear Orchards of East Sarajevo

Psyllid species (Cacopsylla spp.) are the most important pests on pear in all regions where this fruit species is grown. Cacopsylla spp. cause direct and indirect damages because they suck the sap and make large amounts of honeydew, which disturbs the normal physiological processes. Some psyllid species vectors of phytoplasma were found (Carraro i sar., 1998). The survey was done in 2011 and 2012 in orchards, in the locations of Vojkovici, Kula, Tilava, Petrovići and Kasindo. In Kula location, survey was done on the following cultivars: Wiliams, General Le Clerc, „Passa Crasana“, Abe Fetel and Poire de Curé. In pear orchards of the East Sarajevo area the following were determined: Cacopsylla pyri Linne, Cacopsylla pyrisuga Foerster and Cacopsylla pyricola Foerster. In intensive orchards of Vojkovići and Kula, C. pyri was more present compared to C. pyrisuga, while in extensive orchards in the location of Kasindo, C. pyrisuga was more present. In semi-intensive orchards, Tilava and Petrovići, the most present was C. pyrisuga, then C. pyri and the least present was C. pyricola. In the locality of Kula, the highest percentage of shoots infeted with C. pyri was the Poire de Curé, and the smallest was of cultivar Abe Fetel