Ryan Haden, Ph.D.

Ryan Haden, Ph.D.
Assistant Professor - Soils & Agronomy
1328 Dover Road, Wooster, Ohio 44691
Degree Information: 
Ph.D., Cornell University, Soil ScienceM.Sc. Cornell University, Soil ScienceB.A. University of Richmond, BiologyATI Sustainable Agriculture Lab Website


Journal Articles

Winter, J.M.; Young, C.A.; Mehta, V.K.; Ruane, A.C. et al., "Integrating water supply constraints into irrigated agricultural simulations of California" Environmental Modelling and Software 96 (2017) 335-346-335-346
Burger, M.; Haden, V.R.; Chen, H.; Six, J. et al., "Stand age affects emissions of N2O in flood-irrigated alfalfa: a comparison of field measurements, DNDC model simulations and IPCC Tier 1 estimates" Nutrient Cycling in Agroecosystems 106 3 (2016) 335-345-335-345
"Farmers and Climate Change: A Cross-National Comparison of Beliefs and Risk Perceptions in High-Income Countries" Environmental Management 56 2 (2015)
"Sustainable sourcing of global agricultural raw materials: assessing gaps in key impact and vulnerability issues and indicators." PLOS ONE 10 6 (2015)
"Indicators of global sustainable sourcing as a set covering problem: an integrated approach to sustainability" Ecosystem Health and Sustainability 1 2 (2015)
"Perceptions and responses to climate policy risks among California farmers" Global Environmental Change 23 6 (2013)
"The impacts of alternative patterns of urbanization on greenhouse gas emissions in an agricultural county." Journal of Urbanism 6 3 (2013)
"Effect of deep placement of nitrogen fertilizer on growth, yield and N uptake of aerobic rice." Australian Journal of Crop Science 7 6 (2013)
"Factors affecting phosphorous in ground water in an alluvial valley aquifer: Implications for best management practices." Water 5 2 (2013)
"Use of local greenhouse gas inventories to prioritise opportunities for climate action planning and voluntary mitigation by agricultural stakeholders in California" Journal of Environmental Planning and Management 56 4 (2013)
"Irrigation demand and supply, given projections of climate and land-use change, in Yolo County, California" Agricultural Water Management 117 (2013)
"Global and Local Concerns: What Attitudes and Beliefs Motivate Farmers to Mitigate and Adapt to Climate Change?" PLOS ONE 7 12 (2012)
"Genotypic trade-offs between water productivity and weed competition under the System of Rice Intensification in the Sahel" Agricultural Water Management 115 (2012)
"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 (2011)
"Relative effects of ammonia and nitrite on the germination and early growth of aerobic rice" Journal of Plant Nutrition and Soil Science 174 2 (2011)
"Improvement in nitrogen availability, nitrogen uptake and growth of aerobic rice following soil acidification" Soil Science and Plant Nutrition 55 5 (2009)
"Factors affecting change in soil test phosphorus following manure and fertilizer application" Soil Science Society of America Journal 71 4 (2007)
"Weed community dynamics in the system of rice intensification (SRI) and the efficacy of mechanical cultivation and competitive rice cultivars for weed control. in Indonesia" Journal of Sustainable Agriculture 30 4 (2007)


"Chapter 3: Soil Fertility" In Ohio Agronomy Guide, 15th Edition. 2017.
"Chapter 2: Soil and water management" In Ohio Agronomy Guide, 15th Edition. 2017.
"Chapter 10: Considerations for Using Cover Crops" In Ohio Agronomy Guide, 15th Edition. Edited by Lindsey, L.E.; Thomison, P.R.. 2017.
"Appendix 2.1 Income and Patterns of Demand for Food" In The California Nitrogen Assessment. Edited by Tomich, T.; Brodt, S.B.; Dahlgren, R.A.; Scow, K.M.. 2016.
"Appendix 8.1 Experience with Nitrogen Policy Instruments in Practice: Case Studies" In The California Nitrogen Assessment: Challenges and Solutions for People, Agriculture and the Environment. Edited by Tomich, T.; Brodt, S.B.; Dahlgren, R.A.; Scow, K.M.. 2016.
"Appendix 4.1 Supplemental data tables for Chapters 3, 4, and 5" In The California Nitrogen Assessment: Challenges and Solutions for People, Agriculture and the Environment. Edited by Tomich, T.; Brodt, S.B.; Dahlgren, R.A.; Scow, K.M.. 2016.
"Underlying Drivers of Nitrogen Flows in California" In The California Nitrogen Assessment. 2016.
"Ecosystem Services and Human Well-Being" In The California Nitrogen Assessment. 2016.
"Responses: Policies and Institutions" 2016.

Technical Reports

Haden, V.R.; Reid, G., "2017 Organic Oat Performance Trial" 2017.
Barker, D.; Culman, S.; Dorrance, A.E.; Fulton, J. et al., "Ohio Agronomy Guide, 15th Edition" 2017.
Haden, V.R.; Reid, G., "2016 Organic Oat Performance Trial" 2016.
"2015 Organic Oat Performance Trial" 2015.
"American Carbon Registry Methodology for Compost Additions to Grazed Grasslands" 2014.
"Greenhouse Gas Mitigation Opportunities in California Agriculture: Review of California Cropland Emissions and Mitigation Potential" 2014.
"How Will Farmers Respond to the 2014 California Drought?" 2014.
"Climate Change through the Eyes of a Californian Farmer." 2013.
"Vulnerability and Adaptation to Climate Change in California Agriculture" 2012.
"Adaptation Strategies for Agricultural Sustainability in Yolo County, CA" 2012.
"Farmers’ climate change attitudes: past, present, and future perspectives." 2012.
"Managing for climate change in agriculture: Farmer adoption of practices." 2012.
"Agricultural responses to climate change in California. Rural Connections" 2011.
"Can a consensus be reached on the benefits of SRI?" 2009.
"How quickly will soil test P increase?" 2007.


Courses Taught:

Soil Fertility & Fertilizers

Forage Crops

Soil Management

Sustainable Cropping Systems & Marketing

Sustainable Agriculture Methods

Research Interests:

Soil Fertility & Soil Quality

Cover Cropping Strategies & Technologies

Nutrient Managment & Water Quality

Climate Change Adaptation and GHG Mitigation

Sustainable Agriculture

Farmer Decision Making

Link To Website