@inproceedings{paperid:1009761, author = {Rashed Mohassel, M0hammad Hassan and رضا قربانی and , and مهدی نصیری محلاتی}, title = {the influence of nitrogen application on critical period for weed control in corn}, booktitle = {5th Meeting International Weed Science Congress}, year = {2008}, location = {ونکوور}, keywords = {ritical weed period; corn; interference; competition}, }