International Journal of Environmental Research and Public Health | |
Release of Nitrogen and Phosphorus from Poultry Litter Amended with Acidified Biochar | |
Sarah A. Doydora2  Miguel L. Cabrera2  Keshav C. Das3  Julia W. Gaskin3  Leticia S. Sonon1  | |
[1] Soil, Plant, and Water Laboratory, 2400 College Station Road, Athens, GA 30602, USA; E-Mail:;Department of Crop and Soil Sciences, The University of Georgia, 3111 Miller Plant Sciences Building, Athens, GA 30602, USA; E-Mails:;Department of Biological and Agricultural Engineering, Driftmier Engineering Center, The University of Georgia, Athens, GA 30602, USA; E-Mails: | |
关键词: acidified biochar; poultry litter; inorganic nitrogen; inorganic phosphorus; ammonia volatilization; | |
DOI : 10.3390/ijerph8051491 | |
来源: mdpi | |
【 摘 要 】
Application of poultry litter (PL) to soil may lead to nitrogen (N) losses through ammonia (NH3) volatilization and to potential contamination of surface runoff with PL-derived phosphorus (P). Amending litter with acidified biochar may minimize these problems by decreasing litter pH and by retaining litter-derived P, respectively. This study evaluated the effect of acidified biochars from pine chips (PC) and peanut hulls (PH) on NH3 losses and inorganic N and P released from surface-applied or incorporated PL. Poultry litter with or without acidified biochars was surface-applied or incorporated into the soil and incubated for 21 d. Volatilized NH3 was determined by trapping it in acid. Inorganic N and P were determined by leaching the soil with 0.01 M of CaCl2 during the study and by extracting it with 1 M KCl after incubation. Acidified biochars reduced NH3 losses by 58 to 63% with surface-applied PL, and by 56 to 60% with incorporated PL. Except for PH biochar, which caused a small increase in leached NH4 +-N with incorporated PL, acidified biochars had no effect on leached or KCl-extractable inorganic N and P from surface-applied or incorporated PL. These results suggest that acidified biochars may decrease NH3 losses from PL but may not reduce the potential for P loss in surface runoff from soils receiving PL.
【 授权许可】
CC BY
© 2011 by the authors; licensee MDPI, Basel, Switzerland.
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