The increasing number of acres planted to corn (Zea mays L.) and soybean (Glycine max L.) in the Southern Plains, along with the increasing acres of no-till has raised questions about the need for starter fertilizers in these systems. Early plant growth and grain yield may be lower in no-till crops than in conventionally tilled crops due to the nutrient level in the root-zone. Objectives are to evaluate the effects of various starter nitrogen fertilizer placements and rates on full season corn and soybean in Oklahoma. The corn and soybean experiment consists of 3 placement methods (in-furrow, 2x2, and 2x4) and 17 fertilizer treatments. The corn in-furrow treatments consisted of 11, 22, and 45 kg N ha^-1. In addition to these treatments were Zn, S, and Zn plus S treatments that were added to 11 kg N ha^-1. The N was balanced to 168 kg ha^-1 on all in-furrow corn treatments by broadcasting urea. Another corn treatment consisted of broadcasting 168 kg N ha^-1 of urea. The corn 2x2 treatments received N rates of 101, 135, and 168 kg ha^-1. The corn 2x4 treatments received N rates of 135, and 168 kg ha^-1. The soybean in-furrow treatments received an N rate of 5 kg ha^-1. The soybean 2x2 treatments received N rates of 11, 22, and 34kg ha^-1. An additional soybean 2x2 treatment was N with Zn, and S. The in-furrow placement of starter fertilizer rates up to 22 kg N ha^-1 in corn may increase grain yield because of the early increased biomass and the higher nutrient uptake. The soybean trial in Miami, OK showed that 5 kg ha^-1 in-furrow treatment may decrease stand counts because the salt and ammonia toxicity injures the seedling.