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ARS Home » Midwest Area » Ames, Iowa » National Laboratory for Agriculture and The Environment » Agroecosystems Management Research » People & Locations » Peter O'Brien

Peter O'Brien
Agroecosystems Management Research
Research Agronomist

Phone: (515) 294-8873
Fax:

1015 N. University Ave
AMES, IA 50011

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
Sustainable and Resilient Cropping Systems for Midwestern Landscapes
In-House Appropriated (D)
  Accession Number: 434395
Novel Manure Management Technologies: Reducing Odors, Producing Slow-release Fertilizers, and Providing Ecosystem Services
Non-Funded Cooperative Agreement (N)
  Accession Number: 441637

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Nitrate losses and nitrous oxide emissions under contrasting tillage and cover crop management - (Peer Reviewed Journal)
Rye-soybean double-crop: Planting method and N fertilization effects in the North Central U.S. - (Peer Reviewed Journal)
Crop production response to conservation practices and sustainable intensification in a corn-soybean cropping system - (Abstract Only)
O'Brien, P.L., Emmett, B.D., Kovar, J.L., Malone, R.W., Cambardella, C.A., Jaynes, D.B., Kaspar, T.C., Kohler, K.A., Moorman, T.B., Parkin, T.B. 2021. Crop production response to conservation practices and sustainable intensification in a corn-soybean cropping system [abstract]. ASA-CSSA-SSSA Annual Meeting. Paper no. 138076.
Multispecies cover crops in organic agricultural systems in the upper U.S. Midwest Reprint Icon - (Peer Reviewed Journal)
Logsdon, S.D., Cambardella, C.A., O'Brien, P.L. 2021. Multispecies cover crops in organic agricultural systems in the upper U.S. Midwest. Agrosystems, Geosciences & Environment. 4(4). https://doi.org/10.1002/agg2.20221.
Nitrogen losses in response to conservation practices and sustainable intensification of corn-soybean cropping systems in the Upper Midwest - (Abstract Only)
Emmett, B.D., O'Brien, P.L., Malone, R.W., Kovar, J.L., Cambardella, C.A., Jaynes, D.B., Kaspar, T.C., Kohler, K.A., Moorman, T.B., Parkin, T.B. 2021. Nitrogen losses in response to conservation practices and sustainable intensification of corn-soybean cropping systems in the Upper Midwest [abstract]. Soil and Water Conservation Society Proceedings.
Short-term effects of nitrogen source on soil properties and plant growth Reprint Icon - (Peer Reviewed Journal)
Wacha, K.M., Hatfield, J.L., O'Brien, P.L., Dold, C. 2021. Short-term effects of nitrogen source on soil properties and plant growth. Agrosystems, Geosciences & Environment. 4(2). Article e20176. https://doi.org/10.1002/agg2.20176.
Agronomic approach to understanding climate change and food security Reprint Icon - (Peer Reviewed Journal)
O'Brien, P.L., Kral-O'Brien, K.C., Hatfield, J.L. 2021. Agronomic approach to understanding climate change and food security. Agronomy Journal. https://doi.org/10.1002/agj2.20693.
Quantifying the time-specific kinetic energy of simulated rainfall using a dynamic rain gauge system Reprint Icon - (Peer Reviewed Journal)
Wacha, K.M., Huang, C., O'Brien, P.L., Papanicolaou, T.N., Hatfield, J.L. 2021. Quantifying the time-specific kinetic energy of simulated rainfall using a dynamic rain gauge system. Agricultural & Environmental Letters. 6(1). Article e20042. https://doi.org/10.1002/ael2.20042.
Climate fluctuations and soil hydrology - (Book / Chapter)
Meta-analysis: Higher plant richness supports higher pollinator richness across many land use types Reprint Icon - (Peer Reviewed Journal)
Kral-O'Brien, K.C., O'Brien, P.L., Hovick, T.J., Harmon, J.P. 2021. Meta-analysis: Higher plant richness supports higher pollinator richness across many land use types. Annals of the Entomological Society of America. 114(2):267-275. https://doi.org/10.1093/aesa/saaa061.
CO2 fluxes and C budgets affected by stover harvest in Iowa continuous corn systems - (Abstract Only)
O'Brien, P.L., Sauer, T.J., Archontoulis, S., Karlen, D.L., Laird, D.A. 2020. CO2 fluxes and C budgets affected by stover harvest in Iowa continuous corn systems [abstract]. ASA-CSSA-SSSA Annual Meeting. 128195.
Plant-to-plant biomass and yield variability in corn–soybean rotations under three tillage regimes Reprint Icon - (Peer Reviewed Journal)
O'Brien, P.L., Hatfield, J.L. 2021. Plant-to-plant biomass and yield variability in corn–soybean rotations under three tillage regimes. Agronomy Journal. 113(1):370-380. https://doi.org/10.1002/agj2.20514.
Integrating rangeland health and stream stability in assessments of rangeland watersheds Reprint Icon - (Peer Reviewed Journal)
Meehan, M.A., O'Brien, P.L., Hecker, G.A., Printz, J.L. 2021. Integrating rangeland health and stream stability in assessments of rangeland watersheds. Rangeland Ecology and Management. 75:104-111. https://doi.org/10.1016/j.rama.2020.12.005.
Soil health impacts on water and nutrient use efficiency - (Book / Chapter)
Corn stover harvest reduces soil CO2 fluxes but increases overall C losses Reprint Icon - (Peer Reviewed Journal)
O'Brien, P.L., Sauer, T.J., Archontoulis, S., Karlen, D.L., Laird, D. 2020. Corn stover harvest reduces soil CO2 fluxes but increases overall C losses. Global Change Biology Bioenergy. 12(11):894-909. https://doi.org/10.1111/gcbb.12742.
Influences of soil amendments on alfalfa production and soil properties Reprint Icon - (Peer Reviewed Journal)
DeSutter, T.M., Breker, M., Chatterjee, A., O'Brien, P.L., Wick, A. 2020. Influences of soil amendments on alfalfa production and soil properties. Forage and Grazinglands. 6:e20043. https://doi.org/10.1002/cft2.20043.
Phosphorus sorption and desorption in soils treated by thermal desorption Reprint Icon - (Peer Reviewed Journal)
Croat, S.J., DeSutter, T.M., Casey, F.X.M., O'Brien, P.L. 2020. Phosphorus sorption and desorption in soils treated by thermal desorption. Water, Air, and Soil Pollution. 231:216. https://doi.org/10.1007/s11270-020-04579-x.
Foliar nutrient concentrations of three economically important tree species in an alley-cropping system Reprint Icon - (Peer Reviewed Journal)
O'Brien, P.L., Thomas, A.L., Sauer, T.J., Brauer, D.K. 2020. Foliar nutrient concentrations of three economically important tree species in an alley-cropping system. Journal of Plant Nutrition. 43(17):2557-2568. https://doi.org/10.1080/01904167.2020.1783303.
Extreme soil surface temperatures reflect need to rethink agronomic management Reprint Icon - (Peer Reviewed Journal)
O'Brien, P.L., Hatfield, J.L. 2020. Extreme soil surface temperatures reflect need to rethink agronomic management. Agricultural & Environmental Letters. 5(1). https://doi.org/10.1002/ael2.20002.
Applications of vegetative indices from remote sensing to agriculture: past and future Reprint Icon - (Peer Reviewed Journal)
Hatfield, J.L., Prueger, J.H., Sauer, T.J., Dold, C., O'Brien, P.L., Wacha, K.M. 2019. Applications of vegetative indices from remote sensing to agriculture: past and future. Inventions. 4(4):71. https://doi.org/10.3390/inventions4040071.
Applications of vegetative indices from remote sensing to agriculture: past and future. Reprint Icon - (Peer Reviewed Journal)
Hatfield, J.L., Prueger, J.H., Sauer, T.J., Dold, C., O'Brien, P.L., Wacha, K.M. 2019. Applications of vegetative indices from remote sensing to agriculture: past and future. Inventions. 4(4):71. https://doi.org/10.3390/inventions4040071.
Cropping pattern changes diminish agroecosystem services in North and South Dakota, USA Reprint Icon - (Peer Reviewed Journal)
O'Brien, P.L., Hatfield, J.L., Dold, C., Kistner-Thomas, E.J., Wacha, K.M. 2020. Cropping pattern changes diminish agroecosystem services in North and South Dakota, USA. Agronomy Journal. 112(1):1-24. https://doi.org/10.1002/agj2.20001.
Using areal composition of riparian vegetation communities to identify thresholds in prairie streams Reprint Icon - (Peer Reviewed Journal)
Meehan, M.A., O'Brien, P.L. 2019. Using areal composition of riparian vegetation communities to identify thresholds in prairie streams. Rangeland Ecology and Management. 73(1):162-170. https://doi.org/10.1016/j.rama.2019.09.004.
Crop production on heavily disturbed soils following crude oil remediation Reprint Icon - (Peer Reviewed Journal)
Croat, S.J., O'Brien, P.L., Gasch, C.K., Casey, F.X., Desutter, T.M. 2020. Crop production on heavily disturbed soils following crude oil remediation. Agronomy Journal. 112:130-138. https://doi.org/10.1002/agj2.20077.
Need for false spring research in the Northern Great Plains, USA Reprint Icon - (Peer Reviewed Journal)
Kral-O'Brien, K., O'Brien, P.L., Harmon, J. 2019. Need for false spring research in the Northern Great Plains, USA. Agricultural and Environmental Letters. 4(1):190024. https://doi.org/10.2134/ael2019.07.0024.
Crop yield and nitrous oxide emissions following swine manure application: A meta-analysis Reprint Icon - (Peer Reviewed Journal)
Luo, W., O'Brien, P.L., Hatfield, J.L. 2019. Crop yield and nitrous oxide emissions following swine manure application: A meta-analysis. Agricultural & Environmental Letters. 4(1):190024. https://doi.org/10.2134/ael2019.07.0024.
Understanding the interactions of the food and agricultural system: The need for a systems approach - (Abstract Only)
Hatfield, J.L., O'Brien, P.L., Dold, C., Kistner-Thomas, E.J., Wacha, K.M. 2019. Understanding the interactions of the food and agricultural system: The need for a systems approach. [Abstract] ASA-CSSA-SSSA Annual Meeting.
Dairy manure and synthetic fertilizer: A meta-analysis of crop production and environmental quality Reprint Icon - (Peer Reviewed Journal)
O'Brien, P.L., Hatfield, J.L. 2019. Dairy manure and synthetic fertilizer: A meta-analysis of crop production and environmental quality. Agrosystems, Geosciences & Environment. 2(1):1900027. https://doi.org/10.2134/age2019.04.0027.
Using the Rosgen Stream Classification System to aid in Riparian Complex Ecological Site Descriptions Development Reprint Icon - (Peer Reviewed Journal)
Meehan, M.A., O'Brien, P.L. 2019. Using the Rosgen Stream Classification System to aid in Riparian Complex Ecological Site Descriptions Development. Rangeland Ecology and Management. 72(5):729-735. https://doi.org/10.1016/j.rama.2019.05.001.