This paper has as main goal the evaluation of lhe effect of nitrogen application on the yield of no tillage com crop, planted over black oats. Experiments were conducted m the agricultural year of 1996/97 in three experimental units of the ABC Foundation located in the Campos Gerais Region of the state of Paraná. The experimental design was a split-plot randomized block, being the plot treatments the two doses of N applied to the oats crop (O and 30kg há-1 in the planting time) as the main plots and as the time of application of N in the com crop (no nitrogen; 30kg há-1 in the planting plus 90kg há-1 broadcasting in the 6a leaf time; 90kg há-1 during the oats crop management plus 30kg há-1 in the com planting; and 120kg há-1 during the oats crop management plus 30kg há-1 in the com planting) as split plot treatments. It was verified the oats crop fertilization dia not influenced com yield. The com yield was not affected by anticipated N application usually used in corn's broadcasting.
nitrogen; no tillage crop; corn; application timing
