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Fertilizer Effectiveness of Phosphorus Recovered from Broiler Litter
- Phosphorus can be recovered from broiler litter using a new process ("quick wash"). However, limited information is available on the beneficial use of this P product as plant fertilizer. The objective of this study was to determine the agronomic effectiveness of this P material. A greenhouse study was conducted with annual ryegrass (Lolium multiflorum Lam.) to compare the recovered phosphorus (RP) to both commercial triple superphosphate (TSP) and raw broiler litter (BL) as a P source. The study consisted of a 7-wk experiment that was repeated three times. Fertilizer rates were 0, 22, 44, 88, and 176 mg P kg-1 soil. Three harvests of the ryegrass were made at 2-wk intervals. On average, biomass production was higher than the control with no P for plants fertilized with RP, BL, or TSP. Total P uptake increased linearly with application rate for all three fertilizer materials. At the highest application rate, total P uptake was 36.1 mg pot-1 for TSP, 21.3 mg pot-1 for the BL, and 17.3 mg pot-1 for the RP. Chemical analysis of the RP material revealed that more than 90% of the total P in the RP material was mostly as citrate-soluble. Mehlich-3 extractable soil P at the end of the experiment indicated that less RP material dissolved than TSP during this short study. The RP material appears to have potential as a fertilizer.
Szogi, Ariel A. , Bauer, Philip J. , Vanotti, Matias B.
Lolium multiflorum , forage grasses , forage crops , phosphorus , poultry manure , nutrient availability , organic fertilizers , triple superphosphate , pretreatment , processing technology , dry matter accumulation , fertilizer rates
- Includes references
- Agronomy journal 2010 Mar-Apr, v. 102, no. 2
Journal Articles, USDA Authors, Peer-Reviewed
- Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.