About UsOur research group focuses on developing agricultural strategies and technologies to enhance the productivity and sustainability of cropping systems. In Ohio and the upper Midwest, harmful algal blooms have raised awareness among farmers of the need to apply fertilizers at the right rate, time and place through the use of precision ag technologies. Other strategies such as the integration of cover crops into corn-soybean rotations are also likely to help minimize the loss of nutrients in runoff, build soil organic matter, and improve overall soil quality. An additional benefit of precision fertilizer management and cover crops is their potential to help mitigate climate change by minimizing greenhouse gas emissions and sequestering C in agricultural soils. The ultimate goal of our research and extension program is to help farmers weigh the benefits and trade-offs of these practices and to develop innovative technologies that make sustainable practices more practical at the farm scale.
Farmers in developing countries also face numerous challenges to optimal crop production and food security. Our work in international agriculture involves helping small-holder farmers to optimize their management of water and nutrients with the goal of increasing crop yields and adapting to various climate related risks. For instance, in both Asia and Africa we are working to make rice cropping systems more water efficient by examining alternative irrigation strategies such as alternate wetting and drying and aerobic rice. Through this work we maintain working partnerships with scientists at the International Rice Research Institute and other CGIAR centers. Prospective graduate students who are interested in joining our research team should contact Dr. Haden via email. To find out more about our work click on the links in the left-hand menu. Academic Position: Assistant Professor of Soil Science & Agronomy 70% Teaching / 30% Research Education: Ph.D. (2010) Cornell University - Soil Science M.Sc. (2006) Cornell University - Soil Science B.A. (1999) University of Richmond - Biology Curriculum Vitae:
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Contact Info:
Dr. Ryan Haden 607-229-9922 [email protected] 221E Skou Hall Address: Ohio State ATI 1327 Dover Ave. Wooster, OH 44691 |
Selected Publications:
Prokopy L.S., G.J. Arbuckle, A. Barnes, V.R. Haden, A. Hogan, M.T. Niles, J. Tyndall. (2015) Farmers and climate change: a cross-national comparison of beliefs and risk perceptions in high-income countries. Journal of Environmental Management. 56(2): 492-504. (PDF)
Haden, V.R., S. DeGryze, N. Nelson, R. Parkhurst, A. Rood, S. Snider (2014) American Carbon Registry Methodology for Compost Additions to Grazed Grasslands. American Carbon Registry, Sacramento, CA. (PDF)
Culman S.W., V.R. Haden, T. Maxwell, H. Waterhouse, W. Horwath (2014) Greenhouse Gas Mitigation Opportunities in California Agriculture: Review of California Cropland Emissions and Mitigation Potential Nicholas Institute Report # NI GGMOCAR3. Durham, NC: Duke University. (PDF)
Haden V.R., M. Dempsey, S. Wheeler, W. Salas, L.E. Jackson (2013) Use of local greenhouse gas inventories to prioritize opportunities for climate action planning and voluntary mitigation by agricultural stakeholders in California. Journal of Environmental Planning and Management. 56(4):553-571. (PDF)
Xiang J., V.R. Haden, S. Peng, B.A.M. Bouman, J. Huang, K. Cui, R.M. Visperas, D. Zhu, Y. Zhang, H. Chen (2013) Effect of deep placement of nitrogen fertilizer on growth, yield and N uptake of aerobic rice. Australian Journal of Crop Science. 7(6):870-877. (PDF)
Flores-López F., Z.M. Easton, L.D. Geohring, P.J. Vermeulen, V.R. Haden, T.S. Steenhuis (2013) Factors affecting phosphorous in ground water in an alluvial valley aquifer: Implications for best management practices. Water. 5(2):540-559. (PDF)
Mehta V.K., V.R. Haden, D.R. Purkey, B.A. Joyce, L.E. Jackson (2013) Irrigation water demand and supply given projections of climate and land-use change in Yolo County, California. Agricultural Water Management. 117:70– 82. (PDF)
Niles M.T., M. Lubell, V.R. Haden (2013) Perceptions and responses to climate policy risks among California farmers. Global Environmental Change. 23(6): 1752-1760. (PDF)
Wheeler S.M., M. Tomuta, V.R. Haden, L.E. Jackson (2013) The impacts of alternative patterns of urbanization on greenhouse gas emissions in an agricultural county. Journal of Urbanism. 6(3):213-235. (PDF)
Haden V.R., M.T. Niles, M. Lubell, J. Perlman, L. Jackson (2012) Global and local concerns: What attitudes and beliefs motivate farmers to mitigate and adapt to climate change? PLoS ONE. 7(12):e52882. (PDF)
Krupnik T., J. Rodenburg, V.R. Haden, D. Mbaye, C. Shennan (2012) Genotypic trade-offs between water productivity and weed competition under the system of rice intensification in the Sahel. Agricultural Water Management. 115:156-166. (PDF)
Haden V.R., J. Xiang, S. Peng, Q.M. Ketterings, P. Hobbs, J.M. Duxbury (2011) Ammonia toxicity in aerobic rice: use of soil properties to predict ammonia volatilization following urea application and the adverse effects on germination. European Journal of Soil Science. 62(4):551-559. (PDF)
Haden V.R., J. Xiang, S. Peng, B.A.M. Bouman, R. Visperas, Q.M. Ketterings, P. Hobbs, J.M. Duxbury (2011) Relative effects of ammonia and nitrite on the establishment of aerobic rice. Journal of Plant Nutrition and Soil Science. 174(2):292-300. (PDF)
Xiang J., V.R. Haden, S. Peng, B.A.M. Bouman, R.M. Visperas, L. Nie, J. Huang, K. Cui (2009) Improvement of N availability, N uptake and growth of aerobic rice following soil acidification. Journal of Soil Science and Plant Nutrition. 55:705-714. (PDF)
Haden V.R., Q.M. Ketterings, J.E. Kahabka (2007) Factors affecting change in soil test phosphorus following manure and fertilizer application. Soil Science Society America Journal. 71:1225-1232. (PDF)
Haden V.R., J.M. Duxbury, A. DiTommaso, J.E. Losey (2007) Weed community dynamics in the system of rice intensification (SRI) and the efficacy of between-row cultivation and competitive cultivars for weed control in Indonesia. Journal of Sustainable Agriculture. 30(4):5-26. (PDF)
Prokopy L.S., G.J. Arbuckle, A. Barnes, V.R. Haden, A. Hogan, M.T. Niles, J. Tyndall. (2015) Farmers and climate change: a cross-national comparison of beliefs and risk perceptions in high-income countries. Journal of Environmental Management. 56(2): 492-504. (PDF)
Haden, V.R., S. DeGryze, N. Nelson, R. Parkhurst, A. Rood, S. Snider (2014) American Carbon Registry Methodology for Compost Additions to Grazed Grasslands. American Carbon Registry, Sacramento, CA. (PDF)
Culman S.W., V.R. Haden, T. Maxwell, H. Waterhouse, W. Horwath (2014) Greenhouse Gas Mitigation Opportunities in California Agriculture: Review of California Cropland Emissions and Mitigation Potential Nicholas Institute Report # NI GGMOCAR3. Durham, NC: Duke University. (PDF)
Haden V.R., M. Dempsey, S. Wheeler, W. Salas, L.E. Jackson (2013) Use of local greenhouse gas inventories to prioritize opportunities for climate action planning and voluntary mitigation by agricultural stakeholders in California. Journal of Environmental Planning and Management. 56(4):553-571. (PDF)
Xiang J., V.R. Haden, S. Peng, B.A.M. Bouman, J. Huang, K. Cui, R.M. Visperas, D. Zhu, Y. Zhang, H. Chen (2013) Effect of deep placement of nitrogen fertilizer on growth, yield and N uptake of aerobic rice. Australian Journal of Crop Science. 7(6):870-877. (PDF)
Flores-López F., Z.M. Easton, L.D. Geohring, P.J. Vermeulen, V.R. Haden, T.S. Steenhuis (2013) Factors affecting phosphorous in ground water in an alluvial valley aquifer: Implications for best management practices. Water. 5(2):540-559. (PDF)
Mehta V.K., V.R. Haden, D.R. Purkey, B.A. Joyce, L.E. Jackson (2013) Irrigation water demand and supply given projections of climate and land-use change in Yolo County, California. Agricultural Water Management. 117:70– 82. (PDF)
Niles M.T., M. Lubell, V.R. Haden (2013) Perceptions and responses to climate policy risks among California farmers. Global Environmental Change. 23(6): 1752-1760. (PDF)
Wheeler S.M., M. Tomuta, V.R. Haden, L.E. Jackson (2013) The impacts of alternative patterns of urbanization on greenhouse gas emissions in an agricultural county. Journal of Urbanism. 6(3):213-235. (PDF)
Haden V.R., M.T. Niles, M. Lubell, J. Perlman, L. Jackson (2012) Global and local concerns: What attitudes and beliefs motivate farmers to mitigate and adapt to climate change? PLoS ONE. 7(12):e52882. (PDF)
Krupnik T., J. Rodenburg, V.R. Haden, D. Mbaye, C. Shennan (2012) Genotypic trade-offs between water productivity and weed competition under the system of rice intensification in the Sahel. Agricultural Water Management. 115:156-166. (PDF)
Haden V.R., J. Xiang, S. Peng, Q.M. Ketterings, P. Hobbs, J.M. Duxbury (2011) Ammonia toxicity in aerobic rice: use of soil properties to predict ammonia volatilization following urea application and the adverse effects on germination. European Journal of Soil Science. 62(4):551-559. (PDF)
Haden V.R., J. Xiang, S. Peng, B.A.M. Bouman, R. Visperas, Q.M. Ketterings, P. Hobbs, J.M. Duxbury (2011) Relative effects of ammonia and nitrite on the establishment of aerobic rice. Journal of Plant Nutrition and Soil Science. 174(2):292-300. (PDF)
Xiang J., V.R. Haden, S. Peng, B.A.M. Bouman, R.M. Visperas, L. Nie, J. Huang, K. Cui (2009) Improvement of N availability, N uptake and growth of aerobic rice following soil acidification. Journal of Soil Science and Plant Nutrition. 55:705-714. (PDF)
Haden V.R., Q.M. Ketterings, J.E. Kahabka (2007) Factors affecting change in soil test phosphorus following manure and fertilizer application. Soil Science Society America Journal. 71:1225-1232. (PDF)
Haden V.R., J.M. Duxbury, A. DiTommaso, J.E. Losey (2007) Weed community dynamics in the system of rice intensification (SRI) and the efficacy of between-row cultivation and competitive cultivars for weed control in Indonesia. Journal of Sustainable Agriculture. 30(4):5-26. (PDF)