Agriculture Reference
In-Depth Information
Transactions of the Royal Society of London Biological Sciences. <
http://dx.doi.
Vitousek, P. M., R. Naylor, T. Crews, M. B. David, L. E. Drinkwater, E. Holland, P. J. Johnes,
J. Katzenberger, L. A. Martinelli, P. A. Matson, G. Nziguheba, D. Ojima, C. A. Palm,
G. P. Robertson, P. A. Sanchez, A. R. Townsend, and F. S. Zhang. 2009. Nutrient imbal-
ances in agricultural development. Science 324:1519-1520.
Wagger, M. G., M. L. Cabrera, and N. N. Ranells. 1998. Nitrogen and carbon cycling in rela-
tion to cover crop residue quality. Journal of Soil and Water Conservation 53:214-218.
Wagner-Riddle, C., A. Furon, N. L. McLaughlin, I. Lee, J. Barbeau, S. Jayasundara,
G. Parkin, P. Von Bertoldi, and J. Warland. 2007. Intensive measurement of nitrous
oxide emissions from a corn-soybean-wheat rotation under two contrasting manage-
ment systems over 5 years. Global Change Biology 13:1722-1736.
Warncke, D., J. Dahl, and L. Jacobs. 2009. Nutrient recommendations for field crops in
Michigan. Michigan State University Extension Bulletin E2904 (revised August 2009),
Michigan State University, East Lansing, Michigan, USA. See also the Soil Fertility
and Nutrient Management Program website at http://www.soil.msu.edu/
Warncke, D., J. Dahl, L. Jacobs, and C. Laboski. 2004. Nutrient recommendations for field
crops in Michigan. Michigan State University Extension Bulletin E2904, Michigan
State University, East Lansing, Michigan, USA. See also the Soil Fertility and Nutrient
Management Program website at http://www.soil.msu.edu/
Weier, K. L., J. W. Doran, J. F. Power, and D. T. Walters. 1993. Denitrification and the dini-
trogen/nitrous oxide ratio as affected by soil water, available carbon, and nitrate. Soil
Science Society of America Journal 57:66-72.
Whitmire, S. L., and S. K. Hamilton. 2005. Rapid removal of nitrate and sulfate by freshwa-
ter wetland sediments. Journal of Environmental Quality 34:2062-2071.
Wilke, B. 2010. Challenges for developing sustainable nitrogen sources in agriculture: cover
crops, nitrogen fixation and ecological principals. Dissertation, Michigan State
University, East Lansing, Michigan, USA.
Willson, T. C., E. A. Paul, and R. R. Harwood. 2001. Biologically active soil organic matter
fractions in sustainable cropping systems. Applied Soil Ecology 16:63-76.
Yang, J. Y., C. F. Drury, X. M. Yang, R. De Jong, E. C. Huffman, C. A. Campbell, and V.
Kirkwood. 2010. Estimating biological N
2
fixation in Canadian agricultural land using
legume yields. Agriculture, Ecosystems and Environment 137:192-201.
Zhu, X., M. Burger, T. A. Doane, and R. W. Horwath. 2013. Ammonia oxidation pathways
and nitrifier denitrification are significant sources of N
2
O and NO under low oxygen
availability. Proceedings of the National Academy of Sciences USA 110:6328-6333.
