Abstract
A Field experiment was Carried out in Autumn Season 2012 at Mosul and AL- Hemidat / Thaljah village(20km West of Mosul city) to study the effect of three sowing dates(1/6, 15/6and1/7 ( on the growth characters, silag and grain yield for Four corn varieties Bohoth 106, Rabee, Sara and Danay The experiment was set out as Arandomized Compelt Blok Desing with three replications. Results showed that all growth character and at both Location were affected by the interaction between sowing dates and varieties except that for silage yield, ears/ plant at mosul location and grain/ plant, grain yield at both locations. non- significant differfnces were found between corn varieties at both study locations except of leaves percentage at Mosul location and leaves/ plant at both locations.The Interaction between Sowing dates and varieties was significantly Effected all the growth characters and yield at both locations except for silage yield at Mosul location and ears/ plant, grain /plant and total grain yield at both locations.
