Efect of hmixing herbicides and burialdepth on seed germination and seedling emergenc ofGreen Foxtail (Setariaviridis) and Corn (Zea Mays L.)

Detailed information about germination behavior and emergence ability of a weed species from different soil depths is of important value in weed management strategies. Green Foxtail (Setariaviridis)and(Zea Mays) an experiment was conducted using research field and laboratory equipment at 2011year. In the first experiment: herbicide (Atrazine 1.5kg . ha, Acetochlor 4 lit . ha, mixed Atrazine Acetochlor 0.75kg.ha 2 lit . ha and control (distilled water) in terms of the effect on germination traits include percent germination, mean daily germination and seedling weight in a completely randomized design with four replications was compared. experiment second buried depth of treatment as the first 6 levels (1, 2, 3, 4, 5, 6 cm) and the second factor was included Atrazine (1.5kg.ha), Acetochlor (4kg./ha), mixed Atrazine LJ궡졥 (0.75 and 2 kg.ha, respectively), black plastic mulch and weedy check. the effect of the traits include percent average daily seedling emergence, seedling weight and length of the factorial completely randomized design with three replications were compared. results of the two experiments showed that the herbicide Atrazine Acetochlormixed Acetochloralone significantly reduced seed germination and seedling growth was tumbleweed. Black plastic mulch was equally successful in the management of (Setariaviridis).herbicide dose given alone or mixed with Atrazine adverse effect on germination and seedling growth of corn and natural causes sprains and watch seedling leaf, hence the use of Herbicide Atrazine was mixed with a half dose rate (2 lit . ha) is suitable to reduce the adverse effects on corn. Also, the effect of depth on seedling growth of Setariahighest growth was observed at a depth of 3 and 4 cm of the buried depth increases, the rate of growth is also significantly reduced.