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Impact of poultry litter cake, cleanout, and bedding following chemical amendments on soil C and N mineralization
- Abstract::
- Poultry litter is a great alternative N source for crop production. However, recent poultry litter management changes, and increased chemical amendment use may impact its N availability. Thus, research was initiated to evaluate the effect that broiler cake and total cleanout litter amended with chemical additives have on C and N mineralization. A 35-day incubation study was carried out on a Hartsells fine sandy loam (fine-loamy, siliceous, subactive, thermic Typic Hapludults) soil common to the USA Appalachian Plateau region. Three poultry litter components (broiler cake, total cleanout, and bedding material) from a broiler house were evaluated and compared to a soil control. Chemical amendments lime (CaCO3), gypsum (CaSO4), aluminum sulfate (AlSO4), and ferrous sulfate (FeSO4) were added to the poultry litter components to determine their impact on C and N mineralization. Litter component additions increased soil C mineralization in the order of broiler cake > total cleanout > bedding > soil control. Although a greater concentration of organic C was observed in the bedding, broiler cake mineralized the most C, which can be attributed to differences in the C : N ratio between treatments. Chemical amendment in addition to the manured soil also impacted C mineralization, with AlSO4 generally decreasing mineralization. Nitrogen mineralization was also significantly affected by poultry litter component applications. Broiler cake addition increased N availability followed by total cleanout compared to soil control, while the bedding resulted in net N immobilization. Chemical amendments impacted N mineralization primarily in the broiler cake amended soil where all chemical amendments decreased mineralization compared to the no chemical amendment treatment. This short-term study (35-day incubation) indicates that N availability to crops may be different depending on the poultry litter component used for fertilization and chemical amendment use which could decrease N mineralization.
- Author(s):
-
Watts, Dexter B. , Smith, Katy E. , Torbert, H.A.
- Subject(s):
-
Hapludults , additives , aluminum sulfate , calcium sulfate , carbon nitrogen ratio , chemical treatment , crop production , crops , ferrous sulfate , gypsum , immobilization in soil , limes , litter (bedding) , mineralization , nitrogen , nutrient availability , poultry manure , soil amendments , soil nutrients , Appalachian region , United States
- Description:
- Includes references
- Source:
- International journal of agronomy 2012, v. 2012
- Language:
- English
- Year:
- 2012
- Collection:
-
Journal Articles, USDA Authors, Peer-Reviewed
- File:
-
Download [PDF]
- Rights:
- 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.
