Faculty Directory
Dr. Ellen Mallory
Research Area:
Sustainable Agriculture, Nutrient Cycling, and Soil Quality
E-mail:
emallory@umext.maine.edu
Phone:
207-581-2942
Office:
495 College Avenue, Orono
Bio: Dr. Mallory received
her B.S. (1987) from Swarthmore College and M.S. (1994) from the
University of Wisconsin. She received her Ph.D. degree from the
University of Maine in 2007. She joined the faculty in 2008 and is
Extension Sustainable Agriculture Specialist and Assistant Professor
of Sustainable Agriculture.
Current Research:
My research focuses on the
sustainable use of organic amendments, such as manure and compost,
to supply crop nutrients and improve soil health. My recent research
in a collaborative interdisciplinary field study showed that an
amended soil management system that enhanced soil quality increased
both long-term potato yields and the stability of those yields.
Further work investigates how improved soil quality affects short-
and long-term nitrogen dynamics. I am interested in developing tools
to help farmers optimize the use of organic amendments for crop
production, while minimizing potential environmental impacts, such
as nitrate leaching and nitrous oxide emissions. This work will
include evaluating tests to predict nutrient availability from
organic sources, adjusting application rates to account for
amendment history, and developing management strategies, such as
crop rotation and trap crops, to efficiently cycle nutrients and
prevent their loss.
Recent Publications:
Mallory, E.B. and T.S. Griffin. 2007. Impacts of soil amendment
history on nitrogen availability from manure and fertilizer. Soil
Science Society of America Journal 71:964-973.
Mallory, E.B. and G.A. Porter. 2007. Potato yield stability under
contrasting soil management strategies. Agronomy Journal 99:501-510.
Ohno, T., P. Chen, S.S. Jefts, E.B. Mallory, and E.K. McCormick.
2004. Sorption of crop residue-derived dissolved organic matter by
soils and its effect on allelopathic expression. Allelopathy Journal
14: 13-22.
Mallory, E.B., T. Fiez, R.J. Veseth, R.D. Roe, D.J. Wysocki. “Direct
Seeding in the Inland Northwest”, a series of 16 case studies
featuring experienced no-till growers that were published by
Washington State University Cooperative Extension, Pullman, WA from
1999 to 2001. The series was awarded a Certificate of Excellence in
Extension Publications in the 2001 American Society of Agronomy
Educational Materials Awards Program.
Gallandt, E.R., E.B. Mallory, A.R. Alford, F.A. Drummond, E. Groden,
M. Liebman, M.C. Marra, J.C. McBurnie, and G.A. Porter. 1998.
Comparison of alternative pest and soil management strategies for
Maine potato production systems. American J. of Alternative
Agriculture 13:146-161.
Mallory, E.B., J.L. Posner and J.O. Baldock. 1998. Performance,
economics and adoption of cover crops in Wisconsin cash grain
rotations: On-farm trials. American J. of Alternative Agriculture
13:2-11.
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