The important weed species which are obtained in grape fields Tekirdağ, to determine insentivenes and frequency about these weed species

This research was conducted in June 2015 in grape fields of Tekirdağ City in order to investigate the weed species, intensity and the frequency of occurrence. To do this, surveys were realized on an area covering 50 grape fields in towns of Tekirdağ City. As a result, 65 weed species of 23 families were determined. Among these, Convolvulus arvensis L. (field bind weed) (31,49 plants/ m2), Cynanchum acutum L. subsp. acutum (swallow wort) (13,87 plants/ m2), Chenopodium album L. (common lamb's quarters) (13,73 plants/ m2), Solanum nigrum L. (black night shade) (10,20 plants/ m2), Sorghum halepense (L.) Pers. var. halepense (johnson grass) (9,07 plants/ m2), Amaranthus retroflexus L. (redroot pigweed) (8,06 plants/ m2), Portulaca oleracea L. (common purslane) (6,73 plants/ m2), Cynodon dactylon (L.) Pers. var. dactylon (bermuda grass) (4,45 plants/ m2), Cirsium arvense (L.) Scop. (canada thistle) (4,16 plants/ m2) and Setaria viridis (L.) P.Beauv. (green foxtail) (4,03 plants/ m2) were the most frequently determined 10 species.