List of Articles نیتروژن دانه Open Access Article Abstract Page Full-Text 1 - Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content Morteza Motamed Shahram Rezvan Zarin Taj Alipour Ghanbar Laie جعفرمسعود سینکی