Comparison of Raw Dairy Manure Slurry and Anaerobically Digested Slurry as N Sources for Grass Forage Production
Joint Authors
Bary, Andy I.
Whitefield, Elizabeth
Kennedy, Ann C.
Cogger, Craig G.
Fortuna, Ann-Marie
Harrison, Joe H.
Saunders, Olivia E.
Source
International Journal of Agronomy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-06
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
We conducted a 3-year field study to determine how raw dairy slurry and anaerobically digested slurry (dairy slurry and food waste) applied via broadcast and subsurface deposition to reed canarygrass (Phalaris arundinacea) affected forage biomass, N uptake, apparent nitrogen recovery (ANR), and soil nitrate concentrations relative to urea.
Annual N applications ranged from 600 kg N ha−1 in 2009 to 300 kg N ha−1 in 2011.
Forage yield and N uptake were similar across slurry treatments.
Soil nitrate concentrations were greatest at the beginning of the fall leaching season, and did not differ among slurry treatments or application methods.
Urea-fertilized plots had the highest soil nitrate concentrations but did not consistently have greatest forage biomass.
ANR for the slurry treatments ranged from 35 to 70% when calculations were based on ammonium-N concentration, compared with 31 to 65% for urea.
Slurry ANR calculated on a total N basis was lower (15 to 40%) due to lower availability of the organic N in the slurries.
No consistent differences in soil microbial biomass or other biological indicators were observed.
Anaerobically digested slurry supported equal forage production and similar N use efficiency when compared to raw dairy slurry.
American Psychological Association (APA)
Saunders, Olivia E.& Fortuna, Ann-Marie& Harrison, Joe H.& Whitefield, Elizabeth& Cogger, Craig G.& Kennedy, Ann C.…[et al.]. 2012. Comparison of Raw Dairy Manure Slurry and Anaerobically Digested Slurry as N Sources for Grass Forage Production. International Journal of Agronomy،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-446353
Modern Language Association (MLA)
Saunders, Olivia E.…[et al.]. Comparison of Raw Dairy Manure Slurry and Anaerobically Digested Slurry as N Sources for Grass Forage Production. International Journal of Agronomy No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-446353
American Medical Association (AMA)
Saunders, Olivia E.& Fortuna, Ann-Marie& Harrison, Joe H.& Whitefield, Elizabeth& Cogger, Craig G.& Kennedy, Ann C.…[et al.]. Comparison of Raw Dairy Manure Slurry and Anaerobically Digested Slurry as N Sources for Grass Forage Production. International Journal of Agronomy. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-446353
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-446353