Jürgen Burkhardt 500x500
© Jürgen Burkhardt

PD Dr. Jürgen Burkhardt

INRES - Plant Nutrition
Karlrobert-Kreiten-Strasse 13
D-53115 Bonn

+49 228 73-2186

Research interests

Ecophysiology, plant/atmosphere interactions, plant water relations, interactions of fine aerosols with plants, foliar fertilization, crop modeling, global change, Coffea arabica, light and water partitioning in mixed perennial systems with banana.



Habilitation, University of Bonn


Ph.D (Dr.rer.nat), University of Bayreuth


Ph.D. student, BITOEK, Climatology Division, University of Bayreuth


Study of Geoecology, University of Bayreuth


Study of Physics, University of Marburg

Positions held


d'Alembert_Fellowship at University of Paris-Saclay

seit 2011

Senior scientist, INRES-Plant Nutrition, University of Bonn (mostly DFG-funded)


Professor of Hydrology (substitute), University of Münster


Assistant Professor, Institute of Plant Nutrition, University of Bonn


Researcher, Agroecology Division, University of Bayreuth


Scientific Officer, Air Pollution Group, Institute of Terrestrial Ecology, Edinburgh

Selected publications

Burkhardt J., Zinsmeister D., Roth-Nebelsick A., Hüging H., Pariyar S. (2023) Ambient aerosols increase stomatal transpiration and conductance of hydroponic sunflowers by extending the hydraulic system to the leaf surface. Frontiers in Plant Science, 14. https://doi.org/10.3389/fpls.2023.1275358

Vega C., Chi C.-J. E., Fernández V., Burkhardt J. (2023) Nocturnal Transpiration May Be Associated with Foliar Nutrient Uptake. Plants, 12(3), 531. https://www.mdpi.com/2223-7747/12/3/531

Chi C.-J. E., Zinsmeister D., Lai I.-L., Chang S.-C., Kuo Y.-L., Burkhardt J. (2022) Aerosol Impacts on Water Relations of Camphor (Cinnamomum camphora). Frontiers in Plant Science, 13(892096). https://doi.org/10.3389/fpls.2022.892096

Hallsworth J. E., Koop T., Dallas T. D., Zorzano M.-P., Burkhardt J., Golyshina O. V., Martín-Torres J., Dymond M. K., Ball P., McKay C. P. (2021) Water activity in Venus’s uninhabitable clouds and other planetary atmospheres. Nature Astronomy. https://doi.org/10.1038/s41550-021-01391-3

Grantz D.A., Karr M., Burkhardt J. (2020) Heterogeneity of stomatal pore area is suppressed by ambient aerosol in the homobaric species, Vicia faba. Frontiers in Plant Science, 11(897). https://www.frontiersin.org/articles/10.3389/fpls.2020.00897/full

Sun Y., Zhou H., Shan G., Grantz D.A., Schulze Lammers P., Xue X., Damerow L., Burkhardt J. (2019) Diurnal and seasonal transitions of water and ice content in apple stems: Field tracking the radial location of the freezing-and thawing-fronts using a noninvasive smart sensor. Agricultural and Forest Meteorology, 274, 75-84. https://www.sciencedirect.com/science/article/pii/S0168192319301649

Räsch A., Hunsche M., Mail M., Burkhardt J., Noga G., Pariyar S. (2018) Agricultural adjuvants may impair leaf transpiration and photosynthetic activity. Plant Physiology and Biochemistry, 132, 229-237. https://authors.elsevier.com/c/1XjWV3VH9Wt~-t

Burkhardt J., Zinsmeister D., Grantz D.A., Vidic S., Sutton M.A., Hunsche M., Pariyar S. (2018) Camouflaged as 'degraded wax': hygroscopic aerosols contribute to leaf desiccation, tree mortality, and forest decline. Environmental Research Letters. https://doi.org/10.1088/1748-9326/aad346

Grantz D.A., Zinsmeiste, D., Burkhardt J. (2018) Ambient aerosol increases minimum leaf conductance and alters the aperture–flux relationship as stomata respond to vapor pressure deficit (VPD), New Phytologist, 219, 275-286. https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.15102

Zandonadi C.H.S., Burkhardt J., Hunsche M., Da Cunha J.P.A.R (2018) Tank-mix of chlorantraniliprole and manganese foliar fertilizers: Impact on rheological characteristics, deposit properties and cuticular penetration. Crop Protection, 106, 50-57. https://www.sciencedirect.com/science/article/pii/S0261219417303575

Pariyar S., Chang S.-C., Zinsmeister D., Zhou H., Grantz D.A., Hunsche M., Burkhardt J. (2017) Xeromorphic traits help to maintain photosynthesis in the perhumid climate of a Taiwanese cloud forest. Oecologia, 184, 609-621. https://link.springer.com/article/10.1007/s00442-017-3894-4

Burkhardt J., Grantz D.A. (2017) Plants and Atmospheric Aerosols. Progress in Botany, 78, 369-408; Springer Berlin Heidelberg. DOI: 10.1007/124_2016_12 ;  http://link.springer.com/chapter/10.1007/124_2016_12

Burkhardt J., Pariyar S. (2016) How does the VPD response of isohydric and anisohydric plants depend on leaf surface particles? Plant Biology, 18(S1), 91-100.

Konrad W., Burkhardt J., Ebner M., Roth-Nebelsick A. (2015) Leaf pubescence as a possibility to increase water use efficiency by promoting condensation. Ecohydrology.  8, 480-492. http://onlinelibrary.wiley.com/doi/10.1002/eco.1518/abstract

Personne E., Tardy F., Génermont S., Decuq C., Gueudet J.-C., Mascher N., Durand B., Masson S., Lauransot M., Fléchard C, Burkhardt J., Loubet B. (2015) Investigating sources and sinks for ammonia exchanges between the atmosphere and a wheat canopy following slurry application with trailing hose. Agricultural and Forest Meteorology, 207, 11-23. http://www.sciencedirect.com/science/article/pii/S0168192315000805

Stevenson A., Burkhardt J., Cockell C.S., Cray J.A., Dijksterhuis J., Fox-Powell M., Kee T.P., Kminek G., McGenity T.J., Timmis K. N. , Timson D.J., Voytek M.A., Westall F., Yakimov M.M., Hallsworth J.E. (2015) Multiplication of microbes below 0.690 water activity: implications for terrestrial and extraterrestrial life. Environmental Microbiology, 17, 257-277. http://onlinelibrary.wiley.com/doi/10.1111/1462-2920.12598/abstract

Basi S., Burkhardt J., Noga G., Hunsche M. (2014) Hygroscopic salts support the stomatal penetration of glyphosate and influence its biological efficacy. Weed Biology and Management, 14, 186-197. http://onlinelibrary.wiley.com/doi/10.1111/wbm.12046/abstract

Burkhardt J., Pariyar S. (2014) Particulate pollutants are capable to 'degrade' epicuticular waxes and to decrease the drought tolerance of Scots pine (Pinus sylvestris L.). Environmental Pollution, 184, 659-667. http://www.sciencedirect.com/science/article/pii/S0269749113003011

Burkhardt J. (2013) Feinstaub und die Entstehung von Waldschäden. Naturwissenschaftliche Rundschau, 66, 591-593.

Burkhardt J., Hunsche M. (2013) ‘Breath figures’ on leaf surfaces – formation and effects of microscopic leaf wetness. Frontiers in Plant Science, 4; doi: 10.3389/fpls.2013.00422. http://www.frontiersin.org/Journal/10.3389/fpls.2013.00422/full

Pariyar S., Eichert T., Goldbach H.E., Hunsche M., Burkhardt J. (2013) The exclusion of ambient aerosols changes the water relations of sunflower (Helianthus annuus) and bean (Vicia faba) plants. Environmental and Experimental Botany, 88, 43-52.

Kufa T., Burkhardt J. (2013) Hydraulic resistances in seedlings of Coffea arabica accessions under contrasting shade regimes in southwestern Ethiopia. Journal of Agricultural Science, 151, 682-692.

Burkhardt J., Basi S., Pariyar S., Hunsche M.(2012) Stomatal uptake of aqueous solutions – an update involving leaf surface particles. New Phytologist, 196, 774-787. http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2012.04307.x/full

Burkhardt J. (2010) Hygroscopic particles on leaf surfaces: Nutrients or desiccants? Ecological Monographs, 80, 369-399.

Burkhardt J., Flechard C.R., Gresens F., Mattsson M.E., Jongejan, P.A.C., Erisman J.W., T. Weidinger, R. Meszaros, Nemitz E., Sutton M.A. (2009) Modelling the dynamic chemical interactions of atmospheric ammonia with leaf surface wetness in a managed grassland canopy. Biogeosciences, 6, 2505-2539. http://www.biogeosciences.net/6/67/2009/bg-6-67-2009.pdf

Burkhardt J., Hunsche M., Pariyar S. (2009) "Progressive wetting of initially hydrophobic plant surfaces by salts – a prerequisite for hydraulic activation of stomata?" (July 3, 2009). The Proceedings of the International Plant Nutrition Colloquium XVI. Paper 1260. http://repositories.cdlib.org/ipnc/xvi/1260

Beining A., Burkhardt J., Fetene M. (2008) Water Relations of Ethiopian wild Coffee Populations: Genetic Fixation and Phenotypic Plasticity. Proceedings of 22st International Conference on Coffee Science (ASIC 2008), Campinas, Brazil. www.asic-cafe.org/htm/eng/proceedings.htm

Burkhardt J., Kufa T., Beining A., Goldbach H.E., Fetene M. (2006) Different drought adaptation strategies of Coffea arabica populations along a rainfall gradient in Ethiopia Proceedings of 21st International Conference on Coffee Science (ASIC 2006),
Montpellier, France. www.asic-cafe.org/htm/eng/proceedings.htm

Solga A., Burkhardt J., Zechmeister H.G., Frahm J.-P. (2005) Nitrogen content, 15N natural abundance and biomass of the two pleurocarpous mosses Pleurozium schreberi (Brid.) Mitt. and Scleropodium purum (Hedw.) Limpr. in relation to atmospheric nitrogen deposition. Environmental Pollution, 134, 465-473.

Roth A., Gresens F., Goldbach H., Burkhardt J. (2004) Simulation and validation of modelled water use and biomass production of natural plants in the Draa Valley (southern Morocco) -- A case study of IMPETUS testsite Taoujgalt. Proceedings “Deutscher Tropentag 2004”. http://www.tropentag.de/2004/proceedings/node224.html#4539

Burkhardt J., Kaiser H., Kappen L., Goldbach H.E. (2001) The possible role of aerosols on stomatal conductivity for water vapour. Basic and Applied Ecology, 2, 351-364.

Burkhardt J., Koch K., Kaiser H. (2001) Deliquescence of deposited atmospheric particles on leaf surfaces. Water, Air and Soil Pollution, Focus, 1, 313-321.

Eichert T., Burkhardt J. (2001) Quantification of stomatal uptake of ionic solutes using a new model system. Journal of Experimental Botany, 52, 771-781.

Burkhardt J., Kaiser H., Goldbach H., Kappen L. (1999) Measurements of electrical leaf surface conductance reveal re-condensation of transpired water vapour on leaf surfaces. Plant, Cell and Environment, 22, 189-196.

Burkhardt J., Sutton M.A., Milford C., Storeton-West R.L., Fowler D. (1998) Ammonia concentrations at a site in southern Scotland from 2 yr of continuous measurements. Atmospheric Environment, 32, 325-331.

Eichert T., Goldbach H.E., Burkhardt J. (1998) Evidence for the uptake of large anions through stomatal pores. Botanica Acta, 111, 461-466.

Sutton M.A., Burkhardt J.K., Guerin D., Nemitz E., Fowler D. (1998) Development of resistance models to describe measurements of bi-directional ammonia surface-atmosphere exchange. Atmospheric Environment, 32, 473-480.

Burkhardt J., Drechsel P. (1997) The synergism between SO2 oxidation and manganese leaching on spruce needles – A chamber experiment. Environmental Pollution, 95, 1-11.

Burkhardt J., Peters K., Crossley A. (1995) The presence of structural surface waxes on conifereous needles affects the pattern of dry deposition of fine particles. Journal of Experimental Botany, 46, 823-831.

Burkhardt J., Eiden R. (1994) Thin water films on coniferous needles. Atmospheric Environment, 28, 2001-2011.

Eiden R., Burkhardt J., Burkhardt O. (1994) Atmospheric aerosol particles and their role in the formation of dew on the surface of plant leaves. Journal of Aerosol Science, 25, 367-376.

Burkhardt J., Eiden R. (1990) The ion concentration of dew condensed on Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris L.) needles. Trees, 4, 22-26.

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