Elke Graffam
Institute of Biodiversity
Bundesallee 65
38116 Braunschweig
Phone: +49 531 596 2502
Fax: +49 531 596 2599
bd@thuenen.de
Interaction of atmospheric CO2 concentration and other factors on growth, yield and yield quality of agricultural crops
Given the increase of the atmospheric CO2 concentration and associated changes in climate (warming, heat, drought) it is essential to estimate the effect of these climate changes on growth, yield and yield quality of crops and on future food security.The objective of the present project is to examine the effect of future atmospheric CO2 concentrations in combination with other important growth limiting factors on crop growth, yield and yield quality. In addition to the atmospheric CO2 concentration the effect of other factors of climate change (drought, warming, heat) are also investigated in field experiments.
The objective of the present project is to examine the effect of future atmospheric CO2 concentrations in combination with other important growth limiting factors on crop growth, yield and yield quality. In addition to the atmospheric CO2 concentration the effect of other factors of climate change (drought, warming, heat) are also investigated in field experiments.
Different crop species are grown on an experimental field site under future climatic conditions. Atmospheric CO2 concentration is increased by up to 200 ppm above the ambient level using the free air CO2 enrichment (FACE) technique. Depending on the specific problems of a crop species the interaction of CO2 enrichment with nutrient supply, water supply or temperature is investigated.
All factors influencing plant growth were controlled or measured to allow the calculation of biomass production with crop models and to contribute to the improvement of crop models to predict crop yield under changed climatic conditions in the future.
Permanent task 1.1999 - 12.2018
Projekt type:
Project status:
finished
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