John Wallace
Associate Professor of Plant Sciences

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423 ASI
University Park, PA - jmw309@psu.edu
- 814-863-1014
Huck Affiliations
Most Recent Publications
Soil-mediated effects of cover crops on weed-crop competition
Alicia Rouge, John Wallace, Stéphane Cordeau, Delphine Moreau, Jean Philippe Guillemin, Carolyn J. Lowry, 2025, Weed Research
Tillage type and sentinel insect species affect the relative prevalence of the entomopathogenic fungus, Metarhizium robertsii, in soil
Shea A.W. Tillotson, Christina A. Voortman, John M. Wallace, Mary E. Barbercheck, 2025, PLoS One
Planting soybean green: how cereal rye biomass and preemergence herbicides impact Amaranthus spp. management and soybean yield
Jose Nunes, John Wallace, Nicholas Arneson, William G. Johnson, Bryan Young, Jason K. Norsworthy, Joseph Ikley, Karla Gage, Kevin Bradley, Prashant Jha, Sarah Lancaster, Vipan Kumar, Travis Legleiter, Rodrigo Werle, 2024, Weed Science on p. 615-629
U.S. cereal rye winter cover crop growth database
Alexandra M. Huddell, Resham Thapa, Charles White, Guillermo S. Marcillo, Lori J. Abendroth, Steven Mirsky, Victoria J. Ackroyd, Shalamar D. Armstrong, Gautam Asmita, Muthukumar V. Bagavathiannan, Kipling S. Balkcom, Andrea Basche, Shawn Beam, Kevin Bradley, Lucas Pecci Canisares, Heather Darby, Adam S. Davis, Pratap Devkota, Warren A. Dick, Jeffery A. Evans, Wesley J. Everman, Tauana Ferreira de Almeida, Michael L. Flessner, Lisa M. Fultz, Stefan Gailans, Masoud Hashemi, Joseph Haymaker, Matthew J. Helmers, Nicholas Jordan, Thomas C. Kaspar, Quirine M. Ketterings, Eileen Kladivko, Alexandra Kravchenko, Eugene P. Law, Lauren Lazaro, Ramon G. Leon, Jeffrey Liebert, John Lindquist, Kristen Loria, Jodie M. McVane, Jarrod O. Miller, Michael J. Mulvaney, Nsalambi V. Nkongolo, Jason K. Norsworthy, Binaya Parajuli, Christopher Pelzer, Cara Peterson, Hanna Poffenbarger, Pratima Poudel, Mark S. Reiter, Matt Ruark, Matthew R. Ryan, Spencer Samuelson, John E. Sawyer, Sarah Seehaver, Lovreet S. Shergill, Yogendra Raj Upadhyaya, Mark VanGessel, Ashley L. Waggoner, John M. Wallace, Samantha Wells, Bethany Wolters, Alex Woodley, Rongzhong Ye, Eric Youngerman, Brian A. Needelman, Steven B. Mirsky, 2024, Scientific data on p. 1-7
Cover crop termination: how to control annual ryegrass
John Wallace, Dwight Lingenfelter, Vijay Singh, Michael Flessner, Mark VanGessel, Kurt Vollmer, 2024,
Cover crop termination: herbicide application best management practices
John Wallace, Dwight Lingenfelter, Vijay Singh, Michael Flessner, Mark VanGessel, Kurt Vollmer, 2024,
Cover crop termination: how to integrated herbicides with roll-crimping
John Wallace, Dwight Lingenfelter, Vijay Singh, Michael Flessner, Mark VanGessel, Kurt Vollmer, 2024,
Cover crop termination: how to select herbicide programs
John Wallace, Dwight Lingenfelter, Vijay Singh, Michael Flessner, Mark VanGessel, Kurt Vollmer, 2024,
Environmental conditions outweigh seeding rates for cover crop mixture performance across the Northeast US
Helen S. Boniface, Steven B. Mirsky, Matthew R. Ryan, Richard G. Smith, Victoria J. Ackroyd, K. Ann Bybee-Finley, Heather M. Darby, Sjoerd W. Duiker, Masoud Hashemi, Sarah M. Hirsh, Ivy Krezinski, Ellen B. Mallory, Tosh R. Mazzone, Thomas Molloy, Arthur Siller, Resham Thapa, Mark J. VanGessel, John M. Wallace, Nicholas D. Warren, Sandra Wayman, Katherine L. Tully, 2024, Field Crops Research on p. 109564
Interseeding cover crops in corn production: best management practices for drill-inter seeding in Mid-Atlantic Crop Systems
John Wallace, Abbe Hamilton, William Curran, Ronald Hoover, Tosh Mazzone, Greg Roth, 2024,
Most-Cited Papers
Cover crop-based, organic rotational no-till corn and soybean production systems in the mid-atlantic United States
John M. Wallace, Alwyn Williams, Jeffrey A. Liebert, Victoria J. Ackroyd, Rachel A. Vann, William S. Curran, Clair L. Keene, Mark J. Vangessel, Matthew R. Ryan, Steven B. Mirsky, 2017, Agriculture (Switzerland) on p. 34
Cover crop termination timing is critical in organic rotational no-till systems
C. L. Keene, Mary Barbercheck, W. S. Curran, J. M. Wallace, M. R. Ryan, S. B. Mirsky, M. J. Vangessel, 2017, Journal of Production Agriculture on p. 272-282
Evaluation of cover crops drill interseeded into corn across the mid-Atlantic region
W. S. Curran, R. J. Hoover, S. B. Mirsky, G. W. Roth, M. R. Ryan, V. J. Ackroyd, J. M. Wallace, M. A. Dempsey, C. J. Pelzer, 2018, Journal of Production Agriculture on p. 435-443
Ecological characteristics of Ventenata dubia in the Intermountain Pacific Northwest
John M. Wallace, Pamela L.S. Pavek, Timothy S. Prather, 2015, Invasive Plant Science and Management on p. 57-71
Alternative performance targets for integrating cover crops as a proactive herbicide-resistance management tool
Jess M. Bunchek, John M. Wallace, William S. Curran, David A. Mortensen, Mark J. Vangessel, Barbara A. Scott, 2020, Weed Science on p. 534-544
Cover crop effects on horseweed (Erigeron canadensis) density and size inequality at the time of herbicide exposure
John M. Wallace, William Curran, David A. Mortensen, 2019, Weed Science on p. 327-338
Cover crop-based reduced tillage system influences Carabidae (Coleoptera) activity, diversity and trophic group during transition to organic production
Ariel Rivers, Mary Barbercheck, Christina Mullen, John Wallace, 2017, Renewable Agriculture and Food Systems on p. 538-551
Organic fertility inputs synergistically increase denitrification-derived nitrous oxide emissions in agroecosystems
Armen Kemanian, Debasish Saha, Jason P. Kaye, Debasish Saha, Jason Kaye, Arnab Bhowmik, M Bruns, Arnab Bhowmik, John M. Wallace, Mary Ann Bruns, Armen R. Kemanian, 2021, Ecological Applications on p. e02403
Integrated Weed Management Strategies in Cover Crop-based, Organic Rotational No-Till Corn and Soybean in the Mid-Atlantic Region
John M. Wallace, Clair L. Keene, William Curran, Steven Mirsky, Matthew R. Ryan, Mark J. Vangessel, 2018, Weed Science on p. 94-108
Weed-Insect Interactions in Annual Cropping Systems
Mary Barbercheck, John Wallace, 2021, Annals of the Entomological Society of America on p. 276-291