Species, density and frequency of vetch (Vicia sp.) weeds in Erzurum, Turkey

Özet

Öz This study was carried out in order to determine the species, density and frequency of weeds of vetch in Aşkale, Center, Pasinler and İspir-Pazaryolu districts in Erzurum between the years 2009 and 2010 in vetch fields. According to the results, 89 different weed species belonging to 76 genus and 31 families (1 cryptogamae, 14 monocotyledoneaus and 74 dicotyledoneaus) were identified. The densities of these weeds varied between 1-392 square meter and the average weeds per square meter was detected as 57.64 plant/m2. The most wide spread species were Chenopodium album L. in Erzurum Aşkale (14.52 plant/m2), Central (11.87 plant/m2) and İspir-Pazaryolu (6.09 plant/m2) districts; Amaranthus retroflexus L. in Pasinler (12.07 plant/m2) districts of Erzurum. The frequency of weeds species were C. album in Central (83.33%) and Aşkale (%85.19); Convolvulus. arvensis L. in Pasinler (85.19%) and İspir-Pazaryolu (77.14%) districts of Erzurum.