Effect on nitrogen losses from a sheep grazing system by the randomised distribution of excreta

MODSIM 2011 - 19th International Congress on Modelling and Simulation - Sustaining Our Future: Understanding and Living with Uncertainty

Volumn , Issue , 2011, Pages 747-752

  Bell, M J ^a   Cullen, B R ^a   Eckard, R J ^a,b  

^a UNIVERSITY OF MELBOURNE   (Australia)

^b DEPARTMENT OF PRIMARY INDUSTRIES   (Australia)

Author keywords

Distribution; Excreta; Grazing system; Modelling; Nitrogen losses

Indexed keywords

DISTRIBUTION; EXCRETA; GRAZING SYSTEMS; MODELLING; NITROGEN LOSSES;

AGRICULTURE; CLIMATOLOGY; DENITRIFICATION; LEACHING; MAMMALS; WOOL;

NITROGEN;

EID: 84858834137     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (13)

1. DCC (Department of Climate Change), (2009). National Inventory Report 2007 - Volume 1. The Australian Government Submission to the UN Framework Convention on Climate Change, GPO Box 854, Canberra, ACT 2601, p. 217.
2. de Klein, C.A.M. and Eckard, R.J. (2008). Targeted technologies for nitrous oxide abatement from animal agriculture. Australian Journal of Agricultural Research, 48, 14-20.
3. 2O emissions from pasturebased dairy systems in SE Australia. Animal Feed Science and Technology, 166:736-748.
4. Granli, T., Bøckman, O.C., 1994. Nitrous oxide from agriculture. Norwegian Journal of Agricultural Sciences Supplement, 12, 7-128.
5. Haynes, R.J., Williams, P.H., 1993. Nutrient cycling and soil fertility in the grazed pasture ecosystem. Advances in Agronomy, 49, 119-199.
6. Isbell, R.F. (1996). Australian soil and land survey handbook: the Australian soil classification. CSIRO Publishing: Collingwood, Vic.
7. Jeffrey, S.J., Carter, J.O., Moodie, K.M. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data. Environmental Modelling & Software, 16, 309-330.
8. Johnson, I.R., Chapman, D.F., Snow, V.O., Eckard, R.J., Parsons, A.J., Lambert, M.G. and Cullen, B.R. (2008). DairyMod and EcoMod: Biophysical pastoral simulation models for Australia and New Zealand. Australian Journal of Agricultural Research, 48, 621-631.
9. Lodge, G.M. and Johnson, I.R. (2008). Agricultural drought analyses for temperate Australia using a biophysical pasture model. 1. Identifying and characterising drought periods. Australian Journal of Agricultural Research, 59, 1049-1060.
10. Morton, J.D. and Baird, D.B. (1990). Spatial distribution of dung patches under sheep grazing. New Zealand Journal of Agricultural Research, 33, 285-294.
11. Petersen, R.G., Lucas, H.L. and Woodhouse, W.W. (1956). The distribution of excreta by freely grazing cattle and its effects on pasture fertility. I. Excretal distribution. Agronomy Journal, 48, 440-444.
12. Pleasants, A.B., Shorten, P.R. and Wake, G.C. (2007). The distribution of urine deposited on a pasture from grazing animals. Journal of Agricultural Science, 145, 81-86.
13. Snow, V.O., Johnson, I.R. and Parsons, A.J. (2009). The single heterogeneous paddock approach to modelling the effects of urine patches on production and leaching in grazed pastures. Crop & Pasture Science, 60, 691-696.