Determination of weed species transported by irrigation water and found at the edges of irrigation channels on agricultural area in Cukurova Lower Seyhan plain

This study was conducted to determine with the spread of weed species and weed species at the edge of the channel on irrigation water in the Cukurova Lower Seyhan Plain between the years 2007 and 2008. The Lower Seyhan Plain, the northern foothills of the Taurus mountains, in the Ceyhan River in south eastern Mediterranean in the west and the Berdan River lined by a wide plain is 204 000 ha. Lower Seyhan Plain irrigation in the total length of 1451 km between them in the main channel divided into 18 regions and the total area of 127 083 ha are irrigated.The Lower Seyhan Plain Irrigation channels at different times to determine the spread of weed species in total, 252 different samples were made with the appropriate sieves. Weed seeds were counted and classified in the samples. In 2007, 9010 seeeds belong to 78 different weed species in 20 tons of water, while 2662 seeds from 53 weed in16 tons of water in 2008 were found. The most common seeds are Turkestan bluestem (Botriochloa ischaemum (L.) Keng.) Common Purslane (Portulaca oleracea L.) Common amaranth (Amaranthus spp.) Johnson grass (Sorghum halepense (L.) Pers.), Foxtail species (Setaria spp.).In order to identify the weed species along the channel, the surveys were conducted and their frequency were recorded. As a result of the surveys, 27 weed species belonging to 16 families were identified. According to frequency; common purslane (Portulaca oleracea L.) (38.89 %), Awnles barnyardgrass (Echinochloa colonum L.) (33.33 %), Slender amaranth (Amaranthus viridis L.) (30.00 %), Bermuda grass (Cynodon dactylon (L.) Pers.) (30.00 %) and purple nutsedge (Cyperus rotundus L.) (26.67 %) were identified as the most common species along the channel.