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Plant, Soil, and Environmental Sciences

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Faculty Directory - Gallandt

Dr. Eric Gallandt

Research Area: Weed Ecology and Management; Sustainable Agriculture


Phone: 207-581-2933

Office: 205 Roger Clapp Greenhouse

Go to Research Website

Bio: Dr. Gallandt received his B.S. (1986) from Michigan State and M.S. (1988) from Montana State University.  He received his Ph.D. from the University of Wisconson in 1994.  He joined the faculty in 2000 and is an Associate Professor of Weed Ecology.

Teaching:  PSE105 Principles of Sustainable Agriculture; PSE203 Weed Biology and Identification; PSE403 Weed Ecology and Management

Current Research:  My research program focuses on the dynamics and management of annual weeds in organic farming systems. Current research projects include evaluation and comparison of seed-, seedling-, and mulch-based management strategies in organic vegetables. We also continue to evaluate physical weed control, aiming to improve understanding of the sources of variability in cultivation-based seedling mortality. In a collaborative project with colleagues at the University of New Hampshire and University of Vermont, we are characterizing weed communities across northern New England to better understand likely responses to changing climate. Lastly, a new series of field experiments, motivated by questions from Maine farmers, is studying soil solarization as a weed management practice.

Journal Publications (recent)

Ward, Sarah M., Roger D. Cousens, Muthukumar V. Bagavathiannan, Jacob N. Barney,
Hugh J. Beckie, Roberto Busi, Adam S. Davis, et al. 2014. Agricultural weed research:
A critique and two proposals.Weed Science 62:672–78

Jabbour, R., E.R. Gallandt, S. Zwickle1, R.S. Wilson, and D. Doohan (2014).Organic farmer
knowledge and perceptions are associated with on-farm weed seedbank densities in northern
New England. Weed Science 62:338-349

Birthisel1, S.K., E.R. Gallandt, R. Jabbour (2014). Habitat effects on  second-order predation of the
seed predator Harpalusrufipes and implications for weed seedbank management.  Biological Control 70:65-72.

Jabbour, R., S. Zwickle, E.R. Gallandt, K.E. McPhee, R.S. Wilson, and D. Doohan (2013).
Mental models of organic weed management: Comparison of New England U.S. farmer and
expert models. Renewable Agriculture and Food Systems. Accepted March 26,

Kolb1, L.N. and E.R. Gallandt (2013). Are we making progress in organic weed management?
Modeling population growth in organically grown spring wheat production systems. Weed
Research 53:201-212.

Kolb1, L.N., and E.R. Gallandt (2012). Weed management in organic cereals: Advances and
opportunities.    Organic Agriculture 2:23-42.

Harrison2 , S. and E.R. Gallandt (2012). Behavioural studies of Harpalusrufipes De Geer: an
important weed seed predator in Northeastern US agroecosystems. International Journal of
Ecology 2012, Article ID 846546, 6 pages (doi:10.1155/2012/846546).

Kolb1, L.N., E.R. Gallandt, and E.B. Mallory (2012). Impact of spring wheat planting density,
row spacing, and mechanical weed control on yield, grain protein, and economic return in
Maine.  Weed Science 60:244-253.

Kruidhof1, M., E. Gallandt, E. Haramoto1, and L. Bastiaans (2010). Selective weed suppression
by cover crop residues: effects of seed mass and timing of species’ sensitivity. Weed
Research 51:177-186.

Kolb, L.N., E.R. Gallandt, and T. Molloy (2010).  Improving weed management in organic spring
barley: physical weed control vs. interspecific competition.  Weed Research (50: 597-605).

Mirsky, S.B., E.R. Gallandt, D.A. Mortensen, W.S. Curran, and D.L. Shumway (2010).  Reducing
the germinable weed seedbank with soil disturbance and cover crops.  Weed
Research (Published online: 20 May 2010).


1 Graduate student
2 Undergraduate student

Image Description: Eric Gallandt discusses physical weed control at a Rogers Farm Field Day

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Contact Information

Plant, Soil, and Environmental Sciences
5722 Deering Hall
Orono, Maine 04469-5722
Phone: (207) 581-2947 | Fax: (207) 581-2999
The University of Maine
Orono, Maine 04469
A Member of the University of Maine System