Bärbel Gerowitt


Phone: 0381/498 3160
Fax: 0381/498 118 3162

Scientific Career

  • since 2004: Professor, Crop Health, Institute for Land Use, University of Rostock
  • 1992-2004: Scientific Coordinator of the Research Center Agriculture and the Environment, University of Göttingen
  • 1988-1991: Project Research University of Göttingen "Species-specific weed competition and population dynamics"
  • 1987: PhD in Agricultural Sciences - University of Göttingen, thesis in Weed Research
  • 1987: Master in Phytomedicine, University of Göttingen, master thesis in Weed Science - field experiments in Burgenland, Austria
  • 1983:Diploma in Agricultural Science University of Göttingen, diploma thesis in Weed Science

Fields of Research

  • Weed Research
  • Crop Protection and Land Use
  • Integrated Pest Management - Integrated Weed Management
  • Agrobiodiversity
  • Agri-Environmental Politics and Agricultural Production


  • Crop Health - Weed Research, Crop Protection and Pest Management
  • Applied Crop Health - Weed Research, Crop Protection and Pest Management
  • Crop Protection in Organic Farming
  • Soil Biology
  • Weeds in tropical and subtropical agriculture


  • European Weed Research Society (EWRS)
  • German Society of Plant Protection and Plant Health (DPG)
  • International Organisation for Biological and Integrated Control of Noxious Plants and Animal (IOBC)
  • Society for Informatics in Agriculture (GIL)

Scientific Functions

  • European Weed Research Society – President 2016/2017, Vice President 2014/2015, Working Group "Weeds and Biodiversity" (Convenor, 2007-2014)
  • IOBC (Internat. Organisation for Biological and Integrated Control) Working Group „Landscape management for functional Biodiversity”, (Co-convenor)
  • EFSA (European Food Safety Authority), Panel Plant Health, permanent expert 2006-2009, Panel Contaminants, ad-hoc expert 2010 and 2011
  • Association for Technology and Structures in Agriculture (KTBL) - Working Committee "System Evaluation", (Chairperson), 2006-2014

Political Advice

  • Scientific Advisory Board "National Action Plan on Sustainable Use of Pesticides” of Germany, Chairperson, since 2015
  • Scientific Advisory Board "Biodiversity and Genetic Resources" at the German Federal Ministry of Consumer Protection, Food and Agriculture (Chairperson), 2004-2014


  • Agronomy for Sustainable Development (Field Editor) (since 2006)
  • Journal Plant Disease and Plant Protection (Editor-in-Chief), 2010-2015
  • Journal of Consumer Protection and Food Safety (Scientific Advisory Board), 2005-2015


  • 1994 Julius-Kühn-Laureate of the German Society of Plant Protection and Plant Health

Selected Publications

Hofmeijer M A J, Melander B, Salonen J, Lundkvist A, Zarina L, Gerowitt B (2021) Crop diversification affects weed communities and densities in organic spring cereal fields in northern Europe. Agriculture Ecosystems and Environment 308, 107251.

Hofmeijer M A J, Melander B, Salonen J, Lundkvist A, ZarinaL, Gerowitt B (2021)  Weed Species Trait Selection as Shaped by Region and Crop Diversity in Organically Managed Spring Cereals. Agriculture 11(5), 433.

Muppele A-C, Bruelheide H, Brühl C, …, Gerowitt B, … et al. (2021) Biodiversity in European agricultural landscapes: transformative societal changes needed. Trends in Ecology & Evolution 36(12), 1067-1070.

Pannwitt H, Westerman P R, de Mol F, Gerowitt B (2021) Demographic processes allow Echinochloa crus-galli to compensate seed losses by seed predation. Agronomy 11(3), 565.

Steinmann H-H, de Mol F, Kakau J, Gerowitt B (2021) Was ist eine ökologische Schadensschwelle?. Gesunde Pflanzen 73(3), 135-147.

Winklhofer P, Andert S, Hüttel S, Gerowitt B (2021) Measuring on-farm phosphorus fertiliser use—lessons learned from surveying data of five regions in Northern Germany. Agronomy 11(11), 2123.

Zacher A, Baum C, de Mol F, Dehmer K J, Gerowitt B (2021) Mixed Growth with Weeds Promotes Mycorrhizal Colonization and Increases the Plant-Availability of Phosphorus under Maize (Zea mays L.). Agronomy 11(7)

Niggli U, Riedel J, Brühl C, Liess M, Schulz R, Altenburger R, Märländer B, Bokelmann W, Heß J, Reinecke A, Gerowitt B (2020) Pflanzenschutz und Biodiversität in Agrarökosystemen. Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft 98(1), 1-39.

Strehlow B, de Mol F, GerowittB (2020) Herbicide intensity depends on cropping system and weed control target: Unraveling the effects in field experiments. Crop Protection 129, 1-9.

Tørresen K S, Fykse H, Rafoss T, Gerowitt B (2020) Autumn growth of three perennial weeds at high latitude benefits from climate change. Global Change Biology 26, 2561-2572.

Andert S, Mutz J-E, Wiese A, de Mol F, Steinmann H-H, Gerowitt B (2019) Farmers’ statements are reliable – Comparing two different data sources about glyphosate use in Germany. Crop Protection 124, 1-8.

Koning L A, de Mol F, Gerowitt B (2019) Effects of management by glyphosate or tillage on the weed vegetation in a field experiment. Soil & Tillage Research 186, 79-86.

Pannwitt H, Westerman P R, de Mol F, Gerowitt B (2019) Using panicle dry weight to estimate seed production in Echinochloa crus-galli. Weed Research 59, 437-445.

Andert, S, Mutz, J-E, Bürger, J, Gerowitt B (2018) Patterns of pre-crop glyphosate use and in-crop selective herbicide intensities in Northern Germany. Eur. J. Agronomy 97, 20-27.

De Mol F, Winter, M., Gerowitt B (2018) Weather determines the occurrence of wheat stem base diseases in biogas cropping systems. Crop Protection 114, 1-11.

Redwitz, v. C., Gerowitt, B. (2018) Maize-dominated crop sequences in Northern Germany - reaction of the weed species communities. J. Applied Vegetation Science – 21, 431-441.

Pannwitt H, Westerman P R, de Mol F, Selig C, GerowittB (2017) Biological control of weed patches by seed predators; responses to seed density and exposure time. Biological Control 108, 1-8.

Andert, S, Bürger, J, Stein, S, Gerowitt, B (2016): The influence of crop sequence on fungi­ci­de and herbicide use intensities in North German arable farming. Eur. J. Agronomy 77, 81-89.

Hanzlik, K, Gerowitt, B (2016) Methods to conduct and analyze weed surveys in arable farming. A review - Agronomy for Sustainable Development 36, 11-28.

Andert, S, Bürger, J, Gerowitt B (2015) On-farm pesticide use in four Northern German regions as influenced by farm and production conditions. Crop Protection 75, 1-10.

De Mol F, Redwitz von C, GerowittB (2015) Weed vegetation of maize fields in Germany are influenced by site and crop sequences. Weed Research 55, 574-585.

De Mol, F, GerowittB, Kaczmarek S, Matysiak, K, Sønderskov, M, Mathiassen, S (2015) Intra-regional variance of herbicide susceptibility of common arable weed populations exceeds population variance between regions. Weed Research 55, 370-379.

Sønderskov, M, Fritzsche R, de Mol, F, GerowittB, et al. (2015) DSSherbicide: Weed control in winter wheat with a decision support system in three South Baltic regions – field experimental results. Crop Prot. 76, 15-23.

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.

Peters K, Gerowitt B (2014) Response of the two Rare Arable Weed Species Lithospermum arvense and Scandix pecten-veneris to Climate Change Conditions. Plant Ecology 215, 1013-1023.

Peters K, Breitsameter, L, Gerowitt B (2014) Impact of climate change on weeds in agriculture – a review. Agronomy for Sustainable Development 1-15.

Westerman P, Gerowitt B (2013) The effect of anaerobic digestion in biogas plants on weed seeds. The Botanical Review 3, 281-316.

Bürger J, Günther A, de Mol F, Gerowitt B (2012) Analysing the influence of crop management and other factors on pesticide use intensity with Linear Mixed Effects Models. Agricultural Systems 111, 13-22.

Hanzlik K, Gerowitt B (2012) Occurrence and distribution of important weed species in German winter oilseed rape fields. Journal Plant Diseases and Protection 119, 107-120.

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. 

Bürger J, de Mol F, GerowittB (2012) Influence of cropping system factors on pesticide use intensity – a multivariate analysis of on-farm data in North East Germany. European Journal of Agronomy 40, 54-63.

Westerman P R, Gerowitt B (2012) The probability of maize biomass contamination with weed seeds. Journal of Plant Diseases and Protection 119, 68-73. 

Westerman P R, Heiermann M, Pottberg U, Rodemann B, Gerowitt B (2012) Weed seed survival during mesophilic anaerobic digestion in biogas plants. Weed Research 52, 307-316. 

Westerman  P R, Hildebrandt F, Gerowitt B (2012) Weed seed survival following ensiling and mesophilic anaerobic digestion in batch reactors. Weed Research 52, 286-295. 

Hanzlik, K. & Gerowitt, B. (2011) The importance of climate, site and management on weed vegetation in oilseed rape in Germany. Agriculture, Ecosystem and Environment, 141, 323-331.

Mante, J., Wagner, A., Czybulka, D. & Gerowitt, B. (2010) Flowering strips as compensation measures on arable land - Nature conservation valuation and legal interpretation using the example of intensively used agricultural areas in three German federal states (Blühstreifen als Kompen­sationsmaßnahmen auf dem Acker – naturschutzfachliche Einschätzung und rechtliche Bewertung am Beispiel von intensiv genutzten Agrarregionen in drei Bundesländern). Berichte über Landwirtschaft 88, 37-56. 

Höft, A., Müller, J. & Gerowitt, B. (2010) Vegetation indicators for grazing activities to be implemented in outcome-oriented agri-environmental payment schemes in North-East-Germany. Ecological Indicators 10, 719-726.

Mante, J., Gerowitt, B. (2009) Learning from farmers' needs: Identifying obstacles to the successful implementation of field margin measures in intensive arable regions. Landscape and Urban Planning 93, 229-237. 

Bürger, J., de Mol, F., Gerowitt, B. (2008) The 'necessary extent' of pesticide use - Thoughts about a key term in German pesticide policy. Crop Protection, 27, 343-351. 

Gerowitt, B. (2007): Agrobiodiversität und Pflanzenschutz- ein ambivalentes Verhältnis. Journal Consumer Protection and Food Safety, 2, 1-3. (Editorial Letter)

Mante, J., Gerowitt, B. (2007) A survey of on-farm acceptance of low-input measures in intensive agriculture. Agronomy for Sustainable Development, 27, 399-406.  

Dau, A., Gerowitt, B. (2004) Cultural Control of Cirsium arvense (L.) Scop. in a Cereal based Crop Rotation. Journal of Plant Diseases and Protection, Sp. I. XVIII, 475-481. 

Hettwer, U., Gerowitt, B. (2004) An investigation of genetic variation in Cirsium arvense field patches. Weed Research, 44, 289-297. 

Gerowitt, B. (2003) Development and control of weeds in arable farming systems. Agriculture, Ecosystems and Environment, 98, 247-254. 

Gerowitt, B., Bertke, E., Hespelt, S.-K., Tute, C. (2003) Towards multifunctional agriculture - weeds as ecological goods? Weed Research, 43, 227-235.

Gerowitt, B., Isselstein, J., Marggraf, R. (2003) Rewarding Ecological Services- Requirements and Perspectives for Agricultural Land Use. Agriculture, Ecosystems and Environment, 98, 541-547.