مشخصات پژوهش

عنوان	Optimizing Sulfosulfuron and Sulfosulfuron plus Metsulfuron-methyl Activity when Tank-Mixed with Vegetable Oil to Control Wild Barley (Hordeum spontaneum Koch.)
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Herbicide efficacy, Crop selectivity, Penetrant agent.
چکیده	Wild barley has invaded wheat fields ever since flamprop-isopropyl was outdated in Iran. Newly developed herbicides such as sulfosulfuron or sulfosulfuron plus metsulfuron-methyl can control it at higher than recommended dosages but causing significant wheat injury. Hence, two dose-response experiments were conducted to evaluate their efficacy when tank-mixed with thirteen different vegetable oils at the Ferdowsi University of Mashhad, Iran during 2013. Moreover, a wheat cultivar (Gaskogen) was also treated with effective dose 90% (ED90) of both herbicides (21.44 g a.i. of sulfosulfuron ha-1 and 41.95 g a.i. of sulfosulfuron plus metsulfuron-methyl ha-1) with and without each vegetable oil to check selectivity. Averaged over vegetable oils, the effective dose 50% (ED50) was decreased 2.6- and 2.0-fold with sulfosulfuron and sulfosulfuron plus metsulfuron-methyl, respectively. Among evaluated the vegetable oils, both cottonseed and coconut oil were the best ones to enhance the efficacy of both herbicides. The castor oil had the least effect. A negative correlation was observed between the efficiency of vegetable oils and its unsaturated/saturated fatty acids ratio. The phytotoxic effect on wheat did not observe when they were applied with and without vegetable oils.
پژوهشگران	ابراهیم ایزدی دربندی (نفر اول)، اکبر علی وردی (نفر دوم)