Agriculture Reference
In-Depth Information
LDPM-218-01: 2013. Available online: http://www.ers.usda.gov/media/1071057/
ldpm-218-01.pdf (accessed on 2 July 2013).
11. Cornucopia Institute. Position Paper on Organic Beef Finishing and Proposal for
Three Tiered Labeling System for Organic Meat from Ruminants; Cornucopia Insti-
tute: Cornucopia, WI, USA, 2010.
12. Coffey, L.; Baier, A.H. Guide for Organic Livestock Producers; United States De-
partment of Agriculture, National Center for Appropriate Technology, National Sus-
tainable Agriculture Information Service (ATTRA): Butte, MT, UDA, 2012.
13. Kolok, A.S.; Sellin, M.K. The Environmental Impact of Growth-Promoting Com-
pounds Employed by the United States Beef Cattle Industry: History, Current
Knowledge, and Future Directions. In Reviews of Environmental Contamination
and Toxicology; Whitacre, D.M., Ed.; Springer: New York, NY, USA, 2008; pp.
1-30.
14. Rogers, S.; Haines, J. Detecting and Mitigating the Environmental Impact of Fe-
cal Pathogens Originating from Confined Animal Feeding Operations: Review;
EPA/600/R-06/021: 2005; United States Envrionmental Protection Agency, National
Risk Management Research Laboratory, Office of Research and Development: Cin-
cinnati, OH, USA, 2005.
15. Allen, V.G.; Batello, C.; Berretta, E.J.; Hodgson, J.; Kothmann, M.; Li, X.; McIvor,
J.; Milne, J.; Morris, C.; Peeters, A.; et al. An international terminology for grazing
lands and grazing animals. Grass Forage Sci. 2011, 66, 2-28.
16. Walton, P.D.; Martinez, R.; Bailey, A.W. A comparison of continuous and rotational
grazing. J. Range Manage. 1981, 34, 19-21.
17. Condron, L.M.; Cameron, K.C.; Di, H.J.; Clough, T.J.; Forbes, E.A.; McLaren, R.G.;
Silva, R.G. A comparison of soil and environmental quality under organic and conven-
tional farming systems in New Zealand. New Zeal. J. Agr. Res. 2000, 43, 443-466.
18. Reganold, J.P.; Palmer, A.S.; Lockhart, J.C.; Macgregor, A.N. Soil quality and finan-
cial performance of biodynamic and conventional farms in New Zealand. Science
1993, 260, 344-349.
19. Liebig, M.A.; Doran, J.W. Impact of organic production practices on soil quality
indicators. J. Environ. Qual. 1999, 28, 1601-1609.
20. Nguyen, M.L.; Haynes, R.J.; Goh, K.M. Nutrient budgets and status in three pairs
of conventional and alternative mixed cropping farms in Canterbury, New Zealand.
Agr. Ecosyst. Environ. 1995, 52, 149-162.
21. Løes, A.-K.; Øgaard, A.F. Long-term changes in extractable soil phosphorus (P) in
organic dairy farming systems. Plant Soil 2001, 237, 321-332.
22. Cornforth, I.S.; Sinclair, A.G. Model for calculating maintenance phosphate require-
ments for grazed pastures. New Zeal. J. Exp. Agr. 1982, 10, 53-61.
23. Gosling, P.; Shepherd, M. Long-term changes in soil fertility in organic arable farm-
ing systems in England, with particular reference to phosphorus and potassium. Agr.
Ecosyst. Environ. 2005, 105, 425-432.
24. Soder, K.J.; Holden, L.A. Use of anionic salts with grazing prepartum dairy cows.
Prof. Anim. Scientist 1999, 15, 278-285.
25. Bulluck, L.R.; Brosius, M.; Evanylo, G.K.; Ristaino, J.B. Organic and synthetic
fertility amendments influence soil microbial, physical and chemical properties on
organic and conventional farms. Appl. Soil Ecol. 2002, 19, 147-160.
