Improved N fertilizer management practices can increase rice yields and mitigate global warming potentials (GWP). Three field experiments were conducted to quantify the effect of fertilizer N and placement on emissions of CH₄ and N₂O from flooded rice systems. We hypothesized that in continuously flooded rice systems in which GWP is dominated by CH₄ emissions, deep placement of urea in bands would reduce CH₄ emissions with minimal effect on N₂O emissions. Rice yields and greenhouse gas (GHG) emissions were measured from field experiments which had three treatments: (1) no N (N0), (2) urea broadcast (U-BR) on soil surface and (3) urea banded at 7.5 cm soil depth (U-BA). All urea was applied in a single application before flooding in preparation for planting at N rates of 143-150 kg N ha^-1. Emissions of CH₄ and N₂O were measured throughout the rice growing season using a vented flux chamber and gas chromatograph. Across all fields, N fertilizer application increased yield by about 121% and average N use efficiency (NUE) was 37 kg grain kg^-1 N urea with no yield differences in N fertilized treatments. Daily N₂O emissions were low to negative while daily CH₄ emissions varied during the vegetative period. Total seasonal CH₄ emissions ranged from 6.3 to 297 kg CH₄-C ha^-1 season^-1 setting CH₄ emission as the major source of GWP emissions during the growing season. Addition of urea-N increased GWP (by increasing CH₄ emissions) by 32% on average; but there was no effect of urea-N placement on either CH₄ or N₂O emissions.