Poster # 1. Dixon, Robert^*,1, Carr, Ann¹, ¹ The Imprinting Foundation, Tucson, AZ Land imprinting specifications for ecological restoration and sustainable agriculture.

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Poster # 2. Gibson, David^*,1, Middleton, Beth^{1, 2}, Foster, Kari¹, Honu, Yohanes¹, Hoyer, Erik¹, Mathis, Marilyn^{1, 3}, ¹ Southern Illinois University, Carbondale, IL² National Wetlands Research Center, Lafayette, LA³ Howard Payne University, Brownwood, TX Core and satellite species dynamics in response to disturbance and fertilization during early old-field succession.

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Poster # 149. Halvorson, Jonathan^*,1, Belesky, David¹, Godwin, Harry ¹, ¹ Appalachian Farming Systems Research Center, USDA-ARS, Beaver, WV Inhibition of seed germination and early development by leaf litter extracts.

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Poster # 3. Comas, Louise^*,1, Skinner, Howard¹, Sanderson, Matt¹, ¹ USDA-ARS, University Park, PA, USA Using plant morphology, physiology and stress response to define plant functional groups in pasture systems.

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Poster # 4. Awada, Tala ^*,1, Perry, Micheal², Schacht, Walter², ¹ School of Natural Resource Sciences, Lincoln, NE, USA² Department of Agronomy and Horticulture, Lincoln, NE Responses of Bromus inermis and Andropagon gerardii to various canopy levels of Fraxinus pennsylvanica.

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Poster # 5. Adler, Paul^*,1, Sanderson, Matt¹, Goslee, Sarah¹, ¹ USDA-ARS, University Park, PA Survey of CRP and other grasslands in the northeastern USA.

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Poster # 6. Cooley, Heather^{*,1, 2}, Riley, William², Torn, Margaret², ¹ University of California, Berkeley, Berkeley, CA² Lawrence Berkeley National Laboratory, Berkeley, CA Interactions between land cover change and climate in a coupled regional model.

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Poster # 7. Ritchie, Jerry^*,1, McCarty, Gregory², Venteris, Erik², ¹ USDA ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD, US² USDA ARS Environmental Quality Laboratory, Beltsville, MD, US Soil carbon redistribution in an Iowa agroecosystem.

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Poster # 8. Haramoto, Erin^*,1, Gallandt, Eric¹, Molloy, Thomas¹, ¹ University of Maine, Orono, ME, USA Effects of Brassica cover crops on weed dynamics.

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Poster # 9. Chediack, Ariadna^*,, Bird damage evaluation in citrus plantations in Tucumán (Argentina) and Guanacaste (Costa Rica).

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Poster # 10. Kochsiek, Amy^*,1, Knops, Johannes¹, ¹ University of Nebraska-Lincoln, Lincoln, Nebraska Litter quality and decomposition in irrigated versus dryland corn agroecosystems.

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Poster # 11. Webster, Theodore ^*,1, ¹ USDA-ARS, Tifton, GA Polyethylene mulches suppress purple nutsedge (Cyperus rotundus) and yellow nutsedge (Cyperus esculentus) growth.

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Poster # 12. Tanner, Shann^*,1, Wells, Christina¹, Reighard, Gregory¹, Kluepfel, Daniel¹, Riley, Melissa¹, ¹ Clemson University, Clemson, South Carolina Isolation and identification of cyanogenic rhizobacteria from the roots of peach [Prunus persica (L.) Batsch].

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Poster # 13. tadros, mohsen^*,1, Sharshir, Farrg ¹, Abu-attia, Faiez¹, Elshafei, Ghda², ¹ Tanta University,Fac.of Agric,Kafr el-sheikh, Kafr el-sheikh, Kafr el-sheikh, Egypt² Tanta University,Fac.of Agric,Kafr el-sheikh, Kafr el-sheikh, Kafr el-sheikh, Egypt Soil Acarina and Collembola under two vegetable crops grown under plastic tunnels in Kafr El-Sheikh, Egypt.

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