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2017 Projects: Greenhouse Gas Emissions from Alfalfa/Grass and Corn Fields

How Do Manure, Compost, and Fertilizer Management Impact Nitrous Oxide Emissions?

Fertility management of corn in corn alfalfa rotations can impact yield, forage quality, and greenhouse gas emissions from agricultural fields. Here we evaluated the influence of a corn fertility management change from N-based applications of manure and separated dairy solids without incorporation to a P-removal based management of manure (with immediate incorporation after application) and separated dairy solids on corn yield, N balances, and N2O emission. The study was conducted in a field with a long-term history of manure, solids, and inorganic N fertilizer addition during the corn years in a 5-yr corn and 5-yr alfalfa rotation. Our hypothesis was that total N2O emissions increase linearly with N application rate when N is the only yield limiting factor.

If you are interested in participating, contact Quirine Ketterings (qmk2@cornell.edu or 607-255-3061). You can also write to: Quirine Ketterings, Nutrient Management Spear Program, Department of Animal Science, Cornell University, 323 Morrison Hall, Ithaca NY 14853.

Goals

  • To evaluate the influence of a corn fertility management change from N-based applications of manure and separated dairy solids without incorporation to a P-removal based management of manure (with immediate incorporation after application) and separated dairy solids on corn yield, N balances, and N2O emission.

Funding Sources

This work was co-funded by federal formula funds, a USDA conservation innovation grant (4782-CU-USDA-2226), and a USDA– National Institute of Food and Agriculture grant (2013-68002-20525).

Additional Resources

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Journal Articles

  • Sadeghpour, A., Q.M. Ketterings, F. Vermeylen, G.S. Godwin, and K.J. Czymmek (2017). Nitrous oxide emissions with nitrogen vs. phosphorus-based manure management of corn. Soil Science Society of America Journal (in press).
  • Sadeghpour, A., Q.M. Ketterings, G. Godwin, and K.J. Czymmek (2017). Shifting from N-based to P-based manure management maintains soil test phosphorus dynamics in a long-term corn and alfalfa rotation. Agronomy for Sustainable Development. doi: 10.1007/s13593-017-0416-z.
  • Sadeghpour, A., Q.M. Ketterings, G.S. Godwin, and K.J. Czymmek (2017). Under- or over-application of nitrogen impact corn yield, quality, soil, and environment. Agronomy Journal 109:1-11. doi: 10.2134/agronj2016.06.0355.
  • Sadeghpour, A., Q.M. Ketterings, F. Vermeylen, G.S. Godwin, and K.J. Czymmek (2016). Soil properties under nitrogen- vs phosphorus-based manure and compost management of corn. Soil Science Society of America Journal 80:1272–1282. doi:10.2136/sssaj2016.03.0086.
  • Sadeghpour, A., Q.M. Ketterings, G. Godwin and K.J. Czymmek (2016). Nitrogen- vs phosphorus-based manure and compost management of corn. Agronomy Journal 108: 185-195. DOI:10.2134/agronj2015.0218.