<span lang="TR">Evaluation of Weed Diversity and Density in White Cabbage Fields in Sakarya Province of Turkey: A New Record for <em style="mso-bidi-font-style: normal;">Orobanche spp.

In ۲۰۲۲–۲۰۲۳, weed surveys were conducted across ۷۳ randomly selected fields in the districts of Adapazarı, Erenler, Kaynarca, and Pamukova, ensuring coverage of at least ۱% of the total cabbage cultivation area. These surveys identified ۷۱ weed species. Among the weeds present, Stellaria media (L.) Vill. and Veronica hederifolia L. were the most dominant in both survey periods. In the first period, Capsella bursa-pastoris (L.) Medik. showed the highest density (۵.۳۹۰۷), followed by Sonchus oleraceus L., Stellaria media (L.) Vill., and Veronica hederifolia L., all with ۱۰۰% frequency of occurrence. In the second period, Stellaria media had a density of ۳۹.۱۷, while Veronica hederifolia had ۸.۵۰. Regarding frequency of occurrence, Portulaca oleracea L., Convolvulus arvensis L., and Sonchus oleraceus L. were the most frequent species, with ۸۳.۷, ۷۵.۱, and ۷۵.۰ %, respectively. The study concluded that Lamium amplexicaule L. was the most abundant species (in terms of density) in the first period, while Veronica hederifolia L. was the most abundant in the second. However, species dominance varied depending on observation time and whether frequency or density was considered. For the first time in Turkey , Orobanche spp. was identified as a parasitic weed on white cabbage during the second survey period.

کلیدواژه ها:

Brassicaceae ، ، ">Brassica oleracea var. ، ">capitata ، Orobanche spp. ، Parasitic weed ، Weed survey