School of Food and Agriculture

Ellen Mallory

Professor of Sustainable Agriculture and Extension Specialist

Degree: Ph. D. 2007, University of Maine
Phone: 207.581.2942
Email: ellen.mallory@maine.edu
Location: 495 College Avenue, Orono

Websites: UMaine Extension Grains & Oilseeds; UMaine Extension Soil Health; Northeast SARE in Maine

Professional Interests: Biologically based soil fertility; soil health; field crops; organic production; PFAS

Teaching: Cooperative Extension

Research: :  My research and outreach program focuses on emerging challenges and opportunities to advance sustainable agriculture. I currently focus on three main research topics: 1. management of biologically fertility systems to supply crop nutrient needs and improve soil health and productivity; 2. small grain, pulse, and oilseed crop production for local food and beverage markets, both organic and conventional; and 3. factors affecting crop uptake of per- and polyfluoroalkyl substances (PFAS) from contaminated soil. My prior work included climate change impacts on potato and grain production in Maine, organic fertility strategies for bread wheat yield and quality, compost as a fertility source for lowbush blueberry, and soil amendment impacts on soil carbon and nitrogen dynamics, soil quality, and potato yield stability.

Recent Publications:

*Graduate students I advised

Scearce, A., J. MacRae, C. Goossen, R. Schattman, and E.B. Mallory. 2023. Linking drivers of plant PFAS uptake to agricultural land management decisions. Biointerphases 18 (4): 040801. https://doi.org/10.1116/6.0002772

Pickoff*, M., E.B. Mallory, and T. Molloy. 2022. Alternative methods for terminating green manures in organic small grain systems. Renewable Agriculture and Food Systems 37(2):178-186.doi:10.1017/S1742170521000454

Tooley*, B.E., E.B. Mallory, G.A. Porter, G. Hoogenboom. 2021. Predicting the response of a potato-grain production system to climate change for a humid continental climate using DSSAT. Agricultural and Forest Meteorology 307: 108452.
doi.org/10.1016/j.agrformet.2021.108452

Pickoff*, M., J. Leahy, and E.B. Mallory. 2021. Challenges, strategies and research priorities in legume-based nitrogen management for organic small grain producers in the Northeastern US. Renewable Agriculture and Food Systems 36(1):98-107.
doi.org/10.1017/S1742170520000071

Laffely, A., M.S. Erich, and E.B. Mallory. 2020. Evaluation of the CO₂ flush as a soil health indicator. Applied Soil Ecology 154, 103594.doi.org/10.1016/j.apsoil.2020.103594

Carr, P.M., M.A. Cavigelli, H. Darby, K. Delate, J.O. Eberly, G.G. Gramig, J.R. Heckman, E.B. Mallory, J.R. Reeve, E.M. Silva, D.H. Suchoff, and A.L. Woodley. 2020. Green and animal manure use in organic field crop systems. Agronomy Journal. 2020:1-27. doi.org/10.1002/agj2.20082

Carr, P.M., M.A. Cavigelli, H. Darby, K. Delate, J.O. Eberly, G.G. Gramig, J.R. Heckman, E.B. Mallory, J.R. Reeve, E.M. Silva, D.H. Suchoff, and A.L. Woodley. 2019. Nutrient cycling in organic field crops in Canada and the United States. Agronomy Journal 111(6):2769-2785. doi.org/10.2134/agronj2019.04.0275

Roche, E.H., E.B. Mallory, and S.K. Birthisel. 2019. Using farmer storytelling to build understanding of our “new weather reality.” Journal of Extension 57(5), Article 18165IAW. Available at https://joe.org/joe/2019october/iw3.php

Mallory, E.B., T.L. Jackson, and L. Forstadt. 2019. How forming a cooperative network improved services and outcomes for farmers. Journal of Extension 57(4), Article 18108IAW. Available at https://joe.org/joe/2019august/iw3.php

Kissing Kucek, L., N. Santantonio. H. Gauch. J. Dawson, E. Mallory, H. Darby. M.E. Sorrells. 2019. Genotype x environment interactions and stability in organic wheat. Crop Science 59(1):25-32. doi.org/10.2135/cropsci2018.02.0147

Roche*, E., E. Mallory, T. Molloy, and R. Kersbergen. 2018. Evaluating organic bread wheat as a rotation crop for organic dairy farms. Renewable Agriculture and Farm Systems 33(2):163-178. doi:10.1017/S1742170517000035

Roche*, E., E. Mallory, and H. Darby. 2017. Evaluating split nitrogen applications and in-season tests for organic winter bread wheat. Organic Farming 3(1):3-15. doi:10.12924/of2017.03010003

Abreu*, D. C., A.K. Hoshide, E.B. Mallory, E.H. Roche, A.S. Oliveira, R.J. Kersbergen, R.P. Lana, M.A. Fonseca. 2016. Economic and environmental implications of wheat-crop sequences on organic dairy-farm simulations. Crop and Pasture Science 67:1127-1138. doi:10.1071/CP15250

Marshall, K., S. Erich, M. Hutton, M. Hutchinson, and E. Mallory. 2016. Nitrogen availability from compost in high tunnel tomato production. Compost Science and Utilization 24(3):147-158. doi:10.1080/1065657X.2015.1102663

Englander*, A.C., E.B. Mallory, and D.D. Douds. 2016. On-farm produced microbial soil inoculant effects on bread wheat (Triticum aestivum) production. Biological Agriculture and Horticulture 32(2):85-97. doi:10.1080/01448765.2015.1056229

Mallory, E.B., N. Halberg, L. Andreasen, K. Delate, and M. Ngouajio. 2015. Innovations in organic food systems for sustainable production and ecosystem services: An introduction to the special issue of Sustainable Agriculture Research. Sustainable Agriculture Research 4(3):1-4. doi:10.5539/sar.v4n3p1 Available here with full proceedings