Effect of Chemical and Microbial Amendments on Ammonia Volatilization from Composting Poultry Litter

摘要: Research has shown that aluminum sulfate (alum) and phosphoric acid greatly reduce ammonia (NH3) volatilization from poultry litter; however, no studies have yet reported the effects of these amendments on field-scale composting litter. The objectives this study were to (i) evaluate NH3 litter by measuring both changes in total nitrogen (N) (ii) potential methods reducing losses Poultry was composted for 68 d first year 92 second year. Eleven treatments screened Year 1, which included an unamended control, a microbial mixture, mixture with 5% alum incorporated into litter, 5 10% rates either surface-applied or incorporated, 1 2% incorporated. Treatments 2 (7% fresh wt.), (1.5% wt.). Alum reduced as much 76 54%, respectively. highest emission each Compost treated chemical retained more initial N than all other treatments. Due cost loss associated is not economical agronomic perspective compared use