Poultry broiler litter has been applied to crops on a Coastal Plain soil (fine-loamy, siliceous, thermic Typic Kandiudults) since 1991 in Alabama. Variable N rates from 0 to 240 lb./acre were applied based upon the total N content of poultry broiler litter and compared to fertilizer N rates as ammonium nitrate. Conventionally tilled cotton was produced 1991-1994; conservation tilled corn was planted 1995-1997; and conservation tilled cotton has been planted since 1998 to evaluate surface applications and residual effects of broiler litter on cotton. The relationship between the N rates (N) and relative N availability (y) based on the crop yield by can be described by linear equation: y=71.58+0.15N ( r=0.66*, n=22). Residual effect of broiler litter the year following application produced 30 to 50% cotton lint yield and 25 to 65% corn grain yield relative to the current season's application. General observations suggest that N availability from broiler litter is similar whether surface applied as in conservation tillage systems or incorporated as in conventionally tilled systems.