Barbara Baraibar Padro

  • Postdoctoral Scholar
Barbara Baraibar Padro
420 Agricultural Sciences and Industries Building

University Park, PA 16802
Work Phone: 814-863-7112

Areas of Expertise

  • Weed biology and ecology
  • Sustainable weed management
  • Weed seed predation
  • Organic agriculture
  • Agroecology


  1. - PhD 2011 about Weed seed predation in cereal systems by the University of Lleida (Spain)
  2. - MS 2005 in Organic agriculture by the University of Barcelona (Spain)
  3. - BS 2004 in Agriculture Engineering by the University of Lleida (Spain)

Research Interests

My current research focuses in understanding how cover crop mixtures affect different ecosystem services provisioning in organic agriculture. As I specialized in weed ecology, I’m especially interested in how these cover crops “cocktails” can help to manage weeds and the mechanisms that are driving their responses. But I also like to look at a broader picture and try to understand the role that landscape plays in shaping plant communities and ecosystem services provisioning with the ultimate aim to design agro-ecosystems that can accommodate both diversity and production. Before coming to Penn State I did my PhD in the University of Lleida, in Spain (2007-2011) on weed seed predation by harvester ants and granivorous rodents.

Select Publications

Baraibar B, Torra J, Royo-Esnal A, Recasens J, Comas C (2019) Harvester ant nest distribution depends on soil disturbance regime. Biological control 128, 1-5.

Neve P, Barney J, Buckley Y, Cousens R, Graham S, Jordan NR, Lawton-Rauh A, Liebman M, Mesgaran M, Shut M, Shaw J, Storkey J, Baraibar B, Baucom R, Chalak M, et al. (2018) Research priorities in weed ecology, evolution and management: A horizon scan. Weed Research 58, 250–258

Baraibar B, Hunter MC, Schipanski ME, Hamilton A, Mortensen DA (2018) Weed suppression in cover crop monocultures and mixtures. Weed Science 66, 121 – 133. DOI: 10.1017/wsc.2017.59

Finney DM, Murrell EG, White CM, Baraibar B, Barbercheck ME, Bradley BA, Cornelisse S, Hunter MC, Kaye JP, Mortensen DA, Mullen CA, Schipanski ME. (2017) Ecosystem services and disservices are bundled in simple and diverse cover cropping systems. Agric. Environ. Lett. 2:170033. doi:10.2134/ael2017.09.0033

Baraibar B., Canadell C., Torra J., Royo-Esnal A., Recasens J. (2017). Weed seed fate during summer fallow: The importance of seed predation and seed burial. Weed Science 65(4):515-524

Murrell EG., Schipanski ME, Finney DM, Hunter MC, Burgess M, LaChance JC, Baraibar B, White CM, Mortensen DA, Kaye JP. (2017). Achieving diverse cover crop mixtures: Effects of planting date and seeding rate. Agronomy Journal 109, 1–13.

Müller-Stöver D.S., Baraibar B., Loddo D., Peltzerd D., Eizenberg H., Shaw J., French K., Maczey N., Sønderskov M., Macel M., Neve P., Christensen S. (2016) Contribution of the seed microbiome contribute to weed management. Weed Research 56, 335–339.

Liebman M., Baraibar B., Buckley Y., Childs D., Christensen S., Cousens R., Eizenberg H., Heijting S., Loddo D., Merotto A. Jr., Renton M., Riemens M. (2016) Ecologically sustainable weed management: How do we get from proof-of-concept to adoption? Ecological Applications. doi: 10.1002/15-0995

Daedlow, D., Westerman, P.R., Baraibar, B., Rouphael, S., Gerowitt, B. (2014). Weed seed predation rate in cereals as a function of seed density and patch size, under high predation pressure by rodents. Weed Research 54, 186–195.

Baraibar, B., Daedlow, D., De Mol, F., Gerowitt, B. (2012). Density dependence of weed seed predation by invertebrates and vertebrates in winter wheat. Weed Research, 52, 79–87. (Abstract)

Baraibar, B., Torra, J., Westerman, P. R. (2011). Harvester ant (Messor barbarus L.) density as related to soil properties, topography and management in semi-arid cereals. Soil Applied Ecology 51, 60-65. (Abstract)

Baraibar, B., Ledesma, R., Royo-Esnal, A., Westerman, P.R. (2011). Assessing yield losses caused by the harvester ant Messor barbarus (L.) in winter cereals. Crop Protection 30:1144-1148. (Abstract)

Baraibar, B., Carrión, E., Recasens, J., Westerman, P.R. (2011). Unravelling the process of weed seed predation: developing options for better weed control. Biological Control, 56:85-90. (Abstract)

Baraibar, B., Westerman, P.R., Carrión, E. & Recasens J. (2009). Effects of irrigation and tillage in cereal fields on weed seed removal by predators. Journal of Applied Ecology, 46:380-387. (pdf)

 In Spanish:

Baraibar, B. (2013). La depredación de semillas de malas hierbas, una función ecológica a conservar y potenciar. Ecosistemas 22(1):62-66. Monográfico: Conservación de la Biodiversidad en los Sistemas Agrarios. Open access. Available at