Distribution and Infestation Rate of Cyst Nematodes (Tylenchida: Heteroderidae) in Cabbage Growing Areas in Samsun

Abstract

It was observed that 45 of 101 fields were infected with cyst nematodes in Samsun, by surveying cabbages growing areas at 2002-2006. The most common species were identified Heterodera cruciferae Franklin (77,70 %) and Heterodera mediterrenae Vovlas, Inserra & Stone were found as a rate of 20,00 % by using cysts and second stage juveniles. The fields infested with both species were rare. White and red head cabbage varieties were infected with H. cruciferae as a same rate (45,71 %) but kale was found the least infested one. Red and white head cabbage fields were infested with H. mediterranae 77,78 % and 22,22 % respectively, but any kale fields infested with this nematode were not determined.