Effects of different herbicides and their doses on upper and sub soil developments of summer asphodel

The study work was carried out in order to prevent vegetative growth of summer asphodel which makes the management of rangelands difficult and shows toxic effects on grazing. This research work was conducted between the years of 2014-2017 in the Canakkale Province, Turkiye. The experiment trials were established according to the randomized complete block design by using three replications. Experimental treatments were consisted of five herbicides and their two different doses. Herbicide applications were done in the autumn of 2014 and summer of 2015 when the weed started its newly sprouted vegetative growth. Chlorsulfuron (7.5g/da and 15g/da), glyphosate (300ml/da and 600ml/da), dicamba+triasulfurun (12.5g/da and 25g/da), metsulfuron methyl+lodosulfuron methyl (25g/da and 50g/da), and tribenuron methyl+thifensulfuron methyl (2g/da and 4g/da) herbicides were used by applying their recommended and double doses, respectively. Upper and sub soil developments of summer asphodel were investigated. Consequently, a decrease of 80-85% in upper soil development and 60-95% in sub soil development of summer asphodel was observed after applying five different herbicides. In conclusion, it is suggested that the herbicides with active ingredients of glyphosate, metsulfuron methyl+lodosulfuron methyl and tribenuron methyl+thifensulfuron methyl can be used in the management of summer asphodel weed.