Experiments were conducted at six locations in 2000 and at four locations in 1999. These studies were conducted to expand on findings from research conducted in 1997 and 1998 that suggested the corn hybrid yield potential was the most important factor to consider when making planting decisions. However, earlier research evaluated only one hybrid for each technology and was conducted at only one location. In the interest of space only 2000 results are presented in this paper as 1999 results are printed in the 2000 Fertilizer, Aglime and Pest Management Conference proceedings.