Diyarbakır ili buğday tarlalarında bulunan yabancı otların belirlenmesi

Abstract

Determination of weed species in wheat fields of Diyarbakir province This study was carried out as a survey to determine weed species, their observation frequencies and densities in wheat fields of seventeen districts of Diyarbakır province during 2016-2017. For this purpose, field observations were made in total 106 location and the weed species and their frequency and densities were recorded. As a result of the observations; 107 weed species belonging to 26 families, 1 seedlees, 19 monocotyledons, 87 dicotyledons were detected. Families of Asteraceae, Poaceae, Brassicaceae, Apiaceae and Fabaceae, which are the most dominant in the fields and containing 2/3 of all species have been found in survey. Avena fatua L., Sinapis arvensis L., Ranunculus arvensis L., Galium aparine L. ve Cirsium arvense (L.) Scop. were identified as the most common species respectively, and their ratios are 87, 78, 72, 62 and 58%. According to density Avena fatua L. with 9.73 plant m-2 has received the first place. It was followed by Sinapis arvensis L., Galium aparine L., Papaver rhoeas L., Cirsium arvense (L.) Scop. with the numbers of 8.83, 5.94, 2.62 ve 2.45 plant m-2 respectively. Despite the decrease in frequency and density of weeds compared to past years, the results obtained have shown that effective weed management is not exercised.