Poultry Manure Nutrient Availability in Conventional and No-till Production.

The N and P availability coefficients of 3 poultry manure sources are being studied in conventional till and no-till production systems in a cotton/corn/cotton rotation at the Tidewater Research Station and the Upper Coastal Plain Research Station.  The manure sources are 1) broiler litter from a typical Bertie or Nash Co. farm in eastern North Carolina, 2) layer manure from the Braswell Feeds Red Hill Farm site in Nash Co., and 3) composted layer manure from the Rose Acre Farms, Inc. site in Hyde Co.  Soils are a Portsmouth fine sandy loam at Tidewater and Norfolk loamy sand at Upper Coastal Plain.  First year and second year N and P availability coefficients of each amendment will be reported from the first two years of the study (cotton/corn).  Crop yield response, total nutrient uptake and harvest removal, soil nutrient stratification, and lime and micronutrient availability will be described.