VIRULENT GROUP Ro1,4 POTATO GOLDEN CYST NEMATODES (Globodera rostochiensis WOLLENWEBER) IN CROATIA

The potato golden cyst nematode (Globodera rostochiensis WOLLENWEBER) is very important potato pest. According to EPPO it is on the quarantines A2 list. This species was detected on the territory of Belice in 2001. In 2002 soil samples were taken on two treatments, one with potato in monoculture and the other on the wheat where potato was previous crop. Cysts extraction was done in the laboratory of nematology at the Faculty of Agriculture in Osijek and Swedish University of Agriculture Sciences, Department of Crop Science. Virulent group Ro1,4 was detected. More cysts were discovered in the monoculture potato soil (458/100 ccm of soil) than in the soil under the wheat (368/100 ccm of soil). In 2004 vitality of the cysts were analysed. Cysts from potato monoculture had higher vitality (203 larvae/ cyst) than cyst from the soil under wheat (38 larvae/cyst) with potato as previous crop