Bioavailability of phosphorus in granulated and pyrolyzed broiler manure

Production of organic fertilizers from poultry manure may compromise availability phosphorus (P) to plants. This study examined the effects granulation, feather meal addition, and pyrolysis on bioavailability P in broiler a pot experiment with ryegrass assessed whether is enhanced by inoculating arbuscular mycorrhizal fungi (AMF) into soil. Granulated gave similar plant yield uptake superphosphate. Feather addition had minor negative effect availability, whereas lowered fertilization manure. The yield-based mineral-P equivalences were 120%, 85% 75% during first harvest, 100%, 45% one growing season for granulated unamended, amended pyrolyzed Soil inoculation AMF did not enhance availability. suitable as fertilizer annual crops comparable mineral P, slow-release or storage slightly acidic soils. Knowledge produced different technologies can be used optimizing fertilization, minimizing build-up soil its adverse environmental effects.