Jana Zinkernagel

Prof. Dr. Jana Zinkernagel

Function: Head of Institute
Organizational Unit(s):Department of Vegetable CropsProfessorship for Vegetable Crops
Phone: über +49 6722 502 511
eMail: Jana.Zinkernagel(at)hs-gm.de
Postal Address:Von-Lade-Straße 1
D-65366 Geisenheim
Address: Building 1000
Room 102
Von-Lade-Straße 1
65366 Geisenheim

Jana Zinkernagel holds a degree in horticultural sciences from the Technical University of Munich, Weihenstephan, with a focus on secondary metabolites. At the chair of Phytopathology, TUM, and at the Institute for Plant Production and Plant Breeding, LfL, she was working on Phytophthora infection of seed potatoes. In 2008, she obtained a PhD from the University of Gießen on the hydrophysiology of asparagus. This was followed by two years working as a scientist and deputy head of the Department of Vegetable Crops at the Geisenheim Research Centre. During this period, she spent a research stay at the INRA-Institute U.M.R. PIAF in Clermont-Ferrand working on plant hydraulic conductivity. Since December 2010, she is heading the Department of Vegetable Crops and is holding a professorship for Vegetable Crops at the Geisenheim University. Jana Zinkernagel is a board member of the German Horticultural Society, co-coordinator of the European Vegetable Research Institutes Network, Working Group Fertilization and Irrigation, member of the Board of Trustees of the agricultural and horticultural consulting field of the HMUKLV, and member of the Hessian EIP Agri advisitory committee, et al. She is also a reviewer for research foundations and scientific journals.

Research Projects

Project start: 01.02.2020
Project end: 31.05.2023
Sponsor: Federal Ministry of Food and Agriculture

The decision support system GeoSenSys is designed as a GIS-based web application for open field vegetable production to support the user by providing coupled recommendations for site-specific irrigation and nitrogen (N) fertilization. The objective of the project is to develop an Artificial Neuronal Network for Irrigation (ANNI) based on spectral reflectance of the model crop spinach and measured soil, plant and environmental parameters of georeferenced fields. Irrigation demand is derived by combining crop water balance with Geisenheim Irrigation Scheduling, plant parameters and spectral vegetation indices. Scientific verification of the modeled water demand is then performed by measuring current evapotranspiration using eddy covariance analyses. To enable the coupling of irrigation and N fertilization decisions, a N-mineralization model is developed and linked to the irrigation model. This results in simple decision making for cultivation management in vegetable production. Through the small-scale assessment of irrigation and N fertilization demand, this project contributes to resource-efficient and sustainable vegetable production.

Hochschule Geisenheim
© © MSc. Samantha Rubo

Project start: 01.04.2016
Project end: 31.03.2019
Sponsor: European Commission, Hessian Ministry of the Environment, Climate Protection, Agriculture and Consumer Protection

Yellow Wilting has been a problem in cultivation of corn salad for many years. Many abiotic and biotic factors have been excluded as causes. Yet, respective organisms and control measures are not identified. The project within the framework of EIP Agri aims at identifying the cause of Yellow Wilting with the help of metagenomic and metabolomic analyses and developing effective control strategies. Initial results show that solarization as soil disinfestation is efficient in inhibiting Yellow Wilting.

Project start: 01.01.2016
Project end: 31.12.2017
Sponsor: Hessen State Ministry of Higher Education, Research and the Arts

The influence of CO2 concentration and nitrogen form on two varieties of rucola (Diplotaxis tenuifolia) is investigated in climatic chambers. Plant physiological parameters, yield and valuable compounds are analyzed.

Project start: 01.01.2014
Project end: 31.12.2017
Sponsor: Hessen State Ministry of Higher Education, Research and the Arts

Within the FACE2FACE experiment the effects of climate change on agricultural ecosystems such as grassland and specialized crops are investigated. For the cultivation of specialized crops, particular emphasis is placed on plant physiology as well as ingredient composition of harvested material. In the subproject “AP 3.1 Ingredients & product quality – vegetables” the effects of elevated CO2 in interaction with reduced water supply on ingredient composition of spinach, radish and cucumber are investigated.

Project start: 01.01.2012
Project end: 31.12.2015
Sponsor: Federal Ministry of Food and Agriculture

Project start: 01.01.2012
Project end: 31.12.2016
Sponsor: Federal Ministry of Food and Agriculture

Improved methods of irrigation and irrigation scheduling in open-field vegetable production may help to ensure the efficient use of water, energy and labour, high product qualities and quantities. Twelve vegetable farms in two German growing regions with high irrigation demand were intensively advised to improve the efficiency of irrigation and its demand for energy. Regional workshops for interested farmers multiple and publish the experiences of the farmers involved in the pilot project.

Project start: 01.01.2011
Project end: 31.01.2015
Sponsor: Hessian Centre on Climate Change

The future climate impact on climatic water balance and dynamics of plant nutrients are evaluated for the vegetable production in the region "Hessisches Ried" in Hesse, Germany. Regional climate models WETTREG, REMO and CCLM, driven by global climate models ECHAM5 and HadCM3 under scenario A1B, are assessed to evaluate potential ranges of changes in climatic water balance. The impact of climate change on nitrate leaching is investigated via experiments in lysimeters.

Project start: 01.01.2011
Project end: 31.12.2015
Sponsor: Landesbetrieb Landwirtschaft Hessen

"Yellow Wilting" is a severe problem in the production of corn salad (Valerianella locusta). The symptoms are yellow, chlorotic and limp leaves. Affected plants are not marketable any more. Previous experiments have pointed to the fact that plant pathogens might be involved. The microbiocoenosis in soils with symptomatic and asymptomatic plants shall be investigated, using experiments in green house and climate chambers.