Facts and Myths of Feeding the World with Organic Farming Methods - Principles of Sustainable Soil Management in Agroecosystems - page 108

Stewart, B.A., C.A. Robinson, and D.B. Parker. 2000. Examples and case studies of beneficial
reuse of beef cattle by-products. In Land Application of Agricultural, Industrial, and
Municipal By-Products. J.F. Power and W.A. Dick, eds., 387-407. SSSA Book Series 6,
Soil Science Society America, Madison, WI, USA.
Syers, K., M. Bekunda, D. Cordell, J. Corman, J. Johnston, A. Rosemarin, and I. Salcedo. 2011.
Phosphorus and Food Production . UNEP Year Book. United Nations Environmental
Program, Nairobi, Kenya.
Townsend, A.R., R.W. Howarth, F.A. Bazzaz, M.S. Booth, C.C. Cleveland, S.K. Collinge, A.P.
Dobson, P.R. Epstein, E.A. Holland, D.R. Keeney, M.A. Mallin, C.A. Rogers, P. Wayne,
and A.H. Wolfe. 2003. Human health effects of a changing global nitrogen cycle. Ecol
Environ 1:240-248.
USDA. 2012. Cattle: Background. Economic Research Service, Washington, DC.
http://www.ers.usda.gov/brieing/cattle/background.htm (verified April 14, 2012).
Von Liebig, J. 1840. Chemistry in Its Application to Agriculture and Physiology. Taylor &
Walton, London.
Willer, H. and L. Kilcher (Eds.). 2012. The World of Organic Agriculture—Statistics and
Emerging Trends. Research Institute of Organic Agriculture (FiBL), Frick, and
International Federation of Organic Agriculture Movements (IFOAM), Bonn.
Williams, C.M. 2002. Nutritional quality of organic food: shades of grey or shades of green.
Proc Nutr Soc 61:19-24.
Wittwer, S., Y. Youtai, H. Sun, and L. Wang. 1987. Feeding a Billion: Frontiers of Chinese
Agriculture . Michigan State University Press, Michigan, USA.
Woese, K., D. Lange, C. Boess, and K.W. Bögl. 1997. A comparison of organically and con-
ventionally grown foods—results of a review of the relevant literature. J Sci Food Agric
74:281-293.
Worldwatch Institute. 2011. Grain harvest sets record, but supplies still tight. August 12, 2011.
http://worldwatch.org/node/5539 (verified April 14, 2012).
Worthington, V. 2001. The nutritional quality of organic versus conventional fruits, vegetables,
and grains. J Altern Complement Med 7:161-173.
Yang, H.S. 2006. Resource management, soil fertility and sustainable crop production: experi-
ences in China. Agric Ecosyst Environ 116:27-33.
Zhang, H., B. Wang, M. Xu, and T. Fan. 2009. Crop yield and soil responses to long-term
fertilization on a red soil in southern China. Pedosphere 19:199-207.