Yilmaz, AysenurCakmak, TaylanGozel, Ugur2025-01-272025-01-2720242619-9149https://doi.org/10.18016/ksutarimdoga.vi.1334097https://search.trdizin.gov.tr/tr/yayin/detay/1265380https://hdl.handle.net/20.500.12428/26249Root-knot nematodes are the most important plant parasitic nematode group due to their wide host range and difficulties in control and cause significant quality and yield losses in vegetables including lettuce plants. Root-knot nematodes are causing symptoms such as yellowing, wilting, and stunting on lettuce plants. For monitoring lettuce fields for detecting nematode-infected areas, surveys were made to the lettuce growing areas of & Ccedil;anakkale province in the winter months of 2021-2022 and the plants infected with root-knot nematodes were examined and pure nematode cultures were obtained in the laboratory. A total of 16 plant and soil samples were taken and 3 of them were found to be infected with root-knot nematodes. Species identification was made using morphological methods and morphometric measurements from second-stage infective juvenile and female individuals obtained from pure cultures. As a result, the first record of Meloidogyne javanica in lettuce-growing areas in the Southern Marmara Region was made in this study.eninfo:eu-repo/semantics/openAccessLettuceSouthern Marmara RegionRoot-knot nematodeArticle2751055106010.18016/ksutarimdoga.vi.1334097N/AWOS:0013098404000071265380