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Dr. rer. agr. Jan Gräfe

Dr. rer. agr.

Jan Gräfe

Großbeeren
033701 - 78 363
graefe@igzev.de

Scientist

Publications
Personalised Page
Articles in peer-reviewed journals

Arbuscular Mycorrhiza Alleviates Restrictions to Substrate Water Flow and Delays Transpiration Limitation to Stronger Drought in Tomato

Bitterlich, M.; Sandmann, M.; Graefe J. 2018. Arbuscular Mycorrhiza Alleviates Restrictions to Substrate Water Flow and Delays Transpiration Limitation to Stronger Drought in Tomato. Frontiers in Plant Science 9:154.

DOI: 10.3389/fpls.2018.00154

Arbuscular mycorrhiza improves substrate hydraulic conductivity in the plant available moisture range under root growth exclusion

Bitterlich, M.; Franken, P.; Graefe J. 2018. Arbuscular mycorrhiza improves substrate hydraulic conductivity in the plant available moisture range under root growth exclusion. Frontiers in Plant Science 9:301.

DOI: 10.3389/fpls.2018.00301

Arbuscular Mycorrhizas: A Promising Component of Plant Production Systems Provided Favorable Conditions for their Growth

Bitterlich M, Rouphael Y, Graefe J, Franken P. 2018. Arbuscular Mycorrhizas: A Promising Component of Plant Production Systems Provided Favorable Conditions for their Growth. Frontiers in Plant Science 9:1329.

DOI: 10.3389/fpls.2018.01329

Carotenoid biosynthesis of pak choi (Brassica rapa ssp. chinensis) sprouts grown under different light-emitting diodes during the diurnal course

Frede, K.; Schreiner, M.; Zrenner, R.; Graefe, J.; Baldermann, S. 2018. Carotenoid biosynthesis of pak choi (Brassica rapa ssp. chinensis) sprouts grown under different light-emitting diodes during the diurnal course. Photochemical and Photobiological Sciences

DOI: 10.1039/c8pp00136g

Effects of developmental stage and reduced UVB and low UV conditions on secondary plant metabolite profiles in pak choi (Brassica rapa spp. chinesis)

Heinze, M.; Hanschen, F.; Wiesner-Reinhold, M.; Baldermann, S.; Graefe, J.; Schreiner, M.; Neugart, S. 2018. Effects of developmental stage and reduced UVB and low UV conditions on secondary plant metabolite profiles in pak choi (Brassica rapa spp. chinesis). Journal of Agricultural and Food Chemistry 66, 1678-1692.

DOI: 10.1021/acs.jafc.7b03996

The use of features from fluorescence, thermography and NDVI imaging to detect biotic stress in lettuce

Sandmann, M., Grosch, R., and Gräfe, J. 2018. The use of features from fluorescence, thermography and NDVI imaging to detect biotic stress in lettuce. Plant Disease 102, 1101-1107.

DOI: 10.1094/PDIS-10-17-1536-RE

An operational forecast model for soil temperature in plastic-covered asparagus production systems.

Graefe, J. 2017. An operational forecast model for soil temperature in plastic-covered asparagus production systems. Acta Horticulturae 1154, 121-128.

DOI: 10.1007/s00203-017-1394-x

Shortwave radiation transfer trough a plant canopy covered by single and double layers of plastic.

Graefe, J.; Sandmann, M. 2014. Shortwave radiation transfer trough a plant canopy covered by single and double layers of plastic. Agricultural and Forest Meteorology 201, 196-208.

http://www.sciencedirect.com/science/article/pii/S0168192314002627#

Optical methods for the non-destructive estimation of leaf area index in kohlrabi and lettuce.

Sandmann, M.; Graefe, J.; Feller, C. 2013. Optical methods for the non-destructive estimation of leaf area index in kohlrabi and lettuce. Scientia Horticulturae 156, 113-120.

A process-oriented and stochastic simulation model for asparagus spear growth and yield.

Graefe, J.; Heißner, A.; Feller, C.; Paschold, H.-P.; Fink, M.; Schreiner, M. 2010. A process-oriented and stochastic simulation model for asparagus spear growth and yield. European Journal of Agronomy 32, 195-204. →

Gross nitrogen transfer rates in field soils measured by 15N-pool dilution.

Ruppel, S.; Augustin, J.; Gräfe, J.; Rühlmann, J.; Peschke, H. 2006. Gross nitrogen transfer rates in field soils measured by 15N-pool dilution. Archives of Agronomy and Soil Science 52 (4), 377-388.

Gross nitrogen transfer rates in field soils measured by 15N-pool dilution.

Ruppel, S.; Augustin, J.; Gräfe, J.; Rühlmann, J.; Peschke, H. 2006. Gross nitrogen transfer rates in field soils measured by 15N-pool dilution. Archives of Agronomy and Soil Science. 52 (4), 377-388.

Microbially mediated gross N transfer rates in field soils in relation to physico-chemical transfer processes.

Ruppel, S.; Gräfe, J.; Augustin, J.; Rühlmann, J.; Peschke, H. 2006. Microbially mediated gross N transfer rates in field soils in relation to physico-chemical transfer processes. Archives of Agronomy and Soil Science. 52 (4), 389-402..

A new approach to calculate the particle density of soils considering properties of the soil organic matter and the mineral matrix.

Rühlmann, J.; Körschens, M.; Graefe, J. 2005. A new approach to calculate the particle density of soils considering properties of the soil organic matter and the mineral matrix. Geoderma 130 (3-4), 272-283.

Relationship between tuber and leaf growth in radish (Raphanus sativus L. var. sativus) analysed as result of an optimal process.

Heißner, A.; Graefe, J.; Arnold, E. 2005. Relationship between tuber and leaf growth in radish (Raphanus sativus L. var. sativus) analysed as result of an optimal process. European Journal of Horticultural Science 70 (1), 7-15. →

Simulation of soil heating in ridges partly covered with plastic mulch, Part I: Energy balance model.

Graefe, J. 2005. Simulation of soil heating in ridges partly covered with plastic mulch, Part I: Energy balance model. Biosystems Engineering 92 (3), 391-407. →

Simulation of soil heating in ridges partly covered with plastic mulch, Part II: Model calibration and validation

Graefe, J.; Schmidt, S.; Heißner, A.; Rusin, R.; Wonneberger, C. 2005. Simulation of soil heating in ridges partly covered with plastic mulch, Part II: Model calibration and validation. Biosystems Engineering 92 (4), 495-512.


Roughness layer corrections with emphasis on SVAT model applications.

Graefe, J. 2004. Roughness layer corrections with emphasis on SVAT model applications. Agricultural and Forest Meteorology 124 (3-4), 237-251. →

Simplified procedure for steady-state root nutrient uptake with linearized Michaelis-Menten kinetics

Gräfe, J. & R.O. Kuchenbuch, 2002. Simplified procedure for steady-state root nutrient uptake with linearized Michaelis-Menten kinetics. Journal of Plant Nutrition and Soil Science 165(6), 719-724. →

Simplified procedure for steady-state root nutrient uptake with linearized Michaelis-Menten kinetics.

Graefe, J.; Kuchenbuch, R.O. 2002. Simplified procedure for steady-state root nutrient uptake with linearized Michaelis-Menten kinetics. Journal of Plant Nutrition and Soil Science 165 (6), 719-724. →

Mesoscale ecohydrological modelling to analyse regional effects of climate change

Krysanova, V.; Wechsung, F.; Becker, A.; Poschenrieder, W.; Graefe, J. 1999. Mesoscale ecohydrological modelling to analyse regional effects of climate change. Environmental Modeling and Assessment (4), 259-271.

Monographs

Prediction of aerodynamic parameters of plant canopies and of soil heating in ridges covered woth plastic mulch as contributions to SVAT modelling.

Graefe, J. 2006. Prediction of aerodynamic parameters of plant canopies and of soil heating in ridges covered woth plastic mulch as contributions to SVAT modelling. Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 111 S., Dissertation.

Articles in other journals

Erweitertes Temperatur-Monitoring im Spargel.

Gräfe, J. 2014. Erweitertes Temperatur-Monitoring im Spargel. Gemüse 50 (6), 48-49.

Monitoring des Pflanzenwachstums unter Feldbedingungen.

Gräfe, J.; Sandmann, M. 2013. Monitoring des Pflanzenwachstums unter Feldbedingungen. Jahresbericht 2011/2012 des Leibniz-Institutes für Gemüse- und Zierpflanzenbau Großbeeren/Erfurt, S. 48-49.

Phenological growth stages of asparagus (Asparagus officinalis): codification and description according to the BBCH scale.

Feller, C.; Graefe, J. 2013. Phenological growth stages of asparagus (Asparagus officinalis): codification and description according to the BBCH scale. XIIIth International Asparagus Symposium. 17.-19.10.2013, Nanchang, China, Abstrcatbook, S. 64.

‚Warme Füße’ sind das A und O.

Feller, C.; Gräfe, J. 2011. ‚Warme Füße’ sind das A und O. Jahresbericht 2009/2010 des Leibniz-Institutes für Gemüse- und Zierpflanzenbau Großbeeren/Erfurt, 46-47.

Effects of temperature on dormancy of asparagus.

Feller, C.; Gräfe, J.; Fink, M; Heißner, A. 2010. Effects of temperature on dormancy of asparagus. BHGL-Schriftenreihe 27, 54.

Einfluss der Dammtemperatur auf den Anteil hohler und berosteter Spargelstangen.

Feller, C.; Sprengel, M; Gräfe, J. 2010.Einfluss der Dammtemperatur auf den Anteil hohler und berosteter Spargelstangen. BHGL-Schriftenreihe 27, 157.

Erntedauer und Wirtschaftlichkeit bei Spargel.

Feller, C.; Graefe, J.; Fink. M. 2010. Erntedauer und Wirtschaftlichkeit bei Spargel. Spargel & und Erdbeer Profi 12 (1), 22-24.

Feller_et_al_2010_DE.pdf

 

Unter welchem Spargeldamm ist es am wärmsten?

Gräfe, J. Viehöfer, A. 2010. Unter welchem Spargeldamm ist es am wärmsten? Gemüse 46 (5), 33-34.

A process-oriented and stochastic simulation model for asparagus spear growth and yield.

Gräfe J., Heißner, A., Feller, C.; Paschold, P.-J., Fink, M.; Schreiner, M. 2009. A process-oriented and stochastic simulation model for asparagus spear growth and yield. Abstract, XII. International Asparagus Symposium. Lima 29th October - 01st November 2009, S. 57.

Computergestützt die Dammtemperatur und den Spargelertrag vorhersagen.

Gräfe, J.; Feller, C.; Paschold, P.-J. 2009. Computergestützt die Dammtemperatur und den Spargelertrag vorhersagen. Gemüse 45 (4), 44-46.

Effects of temperature on dormancy of asparagus.

Feller, C.; Gräfe J., Fink, M.; Heißner, A. 2009. Effects of temperature on dormancy of asparagus. XII. Abstract, International Asparagus Symposium. Lima, 29th October - 01st November 2009, IPEH-Peruvian Asparagus and Vegetables Institute, S. 111.

A process oriented and stochastic model for asparagus spear growth.

Graefe, J.; Feller, C.; Heißner, A. 2008. A process oriented and stochastic model for asparagus spear growth. First Symposium on Horticulture in Europe, 17th-20th February 2008, Vienna Austria, Book of Abstracts, 302.

How to kill an asparagus plant?

Feller, C.; Graefe, J.; Heißner, A. 2008. How to kill an asparagus plant? 1st Symposium on Horticulture in Europe. First Symposium on Horticulture in Europe, 17th-20th February 2008, Vienna Austria, Book of Abstracts, 200.

Plastic row covers – a computational view.

Gräfe, J. 2007. Plastic row covers – a computational view. Research Report IGZ 2005/2006, 20-23.

Die Vorhersage der Erwärmung von Spargeldämmen aus meteorologischen Daten.

Gräfe, J. 2006. Die Vorhersage der Erwärmung von Spargeldämmen aus meteorologischen Daten. Abstract, BHGL-Schriftenreihe 24, 106.

Individual contributions to edited volumes

Die Verwendung von abgeleiteten Parametern aus Fluoreszenz-, Thermografie- und NDVI-Abbildungen zur Erkennung von biotisch gestresstem Kopfsalat

Sandmann, M.; Graefe, J.; Grosch, R. 2018. Die Verwendung von abgeleiteten Parametern aus Fluoreszenz-, Thermografie- und NDVI-Abbildungen zur Erkennung von biotisch gestresstem Kopfsalat. 52. Gartenbauwissenschaftliche Jahrestagung, Geisenheim 28.02.-03.03.2018. BHGL-Schriftenreihe Band 33, Seite 64.

Species-specific impact of Fusarium ssp. on Asparagus officinalis crown and root rot

Djalali Farahani-Kofoet, R.; Witzel, K.; Graefe, J.; Grosch, R.; Zrenner, R. 2018. Species-specific impact of Fusarium ssp. on Asparagus officinalis crown and root rot. 14. European Fusarium Seminar (EFS14), Tulln/Austria 8.-11.04.2018. Book of Abstracts, 95.

The capability of features obtained via the non-contact methods of fluorescence, thermography and NDVI to detect biotic stressed lettuce

Sandmann, M.; Graefe, J.; Grosch, R. 2018. The capability of features obtained via the non-contact methods of fluorescence, thermography and NDVI to detect biotic stressed lettuce. BONARES Conference 2018, Berlin 26.02.-28.02.2018. Book of Abstracts.

Gemüsebau

Gräfe, J.; Frühauf, C. 2017. Gemüsebau. In: Bundesanstalt für Landwirtschaft und Ernährung (eds), Agrarmeteorologie, BLE, Bonn, 98-107.

ISBN: 987-3-8308-1297-5

Monitoring and modelling of water and heat fluxes from asparagus fields

Gräfe, J.; Sradnik, A. 2017. Monitoring and modelling of water and heat fluxes from asparagus fields. 14th International Asparagus Symposium Potsdam, Book of Abstracts, 34.

Primary metabolism in arbuscular mycorrhizal symbiosis: carbon, nitrogen and sulphur.

Bitterlich, M.; Gräfe, J.; Franken, P. 2017. Primary metabolism in arbuscular mycorrhizal symbiosis: carbon, nitrogen and sulphur. In: Martin, F. (ed). Molecular Mycorrhizal Symbiosis. Wiley, Hoboken NJ, 217-238.

ISBN: 978-1-118-95141-5

Can stomatal conductance of lettuce be evaluated via thermography?

How to measure stomatal conductance of lettuce leaves via thermography.

Sandmann M.; Grosch R.; Gräfe J. 2016. How to measure stomatal conductance of lettuce leaves via thermography. ISHS Symposium 2016 “Sensing Plant Water Status”, Book of Abstract, 52.

Implications of soil management practices on soil suppressiveness for improved soil health and sustainable plant production

Grosch R.; Gräfe J.; Schellenberg I.; Geistlinger J.; Smalla K.; Pühler P.; Schlüter A.;  Neumann G.; Hartmann A.; Schmid M.; Moldaschl M.; Mäder P. 2016. Implications of soil management practices on soil suppressiveness for improved soil health and sustainable plant production. Plant 2030 Status Seminar, Book of Abstract, 23.

An operational forecast model for soil temperature in plastic covered Asparagus production system.

Graefe, J. 2015. An operational forecast model for soil temperature in plastic covered Asparagus production system. MODEL‐IT symposium, Wageningen, Netherlands, Book of Abstracts, 60.

Extending the hourly monitoring of asparagus ridge temperatures with forecasts.

Graefe, J. 2013 Extending the hourly monitoring of asparagus ridge temperatures with forecasts. XIIIth International Asparagus Symposium, Nanchang, Book of Abstracts, 44.

ARTICLES (peer-reviewed journals)
MONOGRAPHS
ARTICLES (other journals)
EDITED VOLUMES (individual)