Objective was to determine physiological and grain yield response of a corn (Zea mays L.) hybrid when seed orientation is controlled at planting time. Three seed orientations were used: parallel to row direction, perpendicular to row direction and randomly planted seed. All seed orientations were planted at 18,000, 36,000, 54,000, 72,000 and 90,000 plants acre^-1. Grain yield, stalk lodging, root lodging, GDU's to 50% silk, GDU's to 50% shed, anthesis-silking interval, ear height, plant height, stalk diameter and barren plants were recorded. Results of this study will be presented.