The quality of degradee plants because of the increased concentration in the atmosphere CO2?

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In 50 years CO2 concentration in the atmosphere is expected to 450-550 ppm (parts per million) against the current value of 375 ppm. This increase not only causes the Global warming by greenhouse gases, but it also influences the plants.

The Institute of Agrarian ecology of the FAL (Federal Agricultural Research Establishment) to Brunswick (Lower Saxony) studied these effects in expensive greenhouses gathering culture conditions in open fields, where you can master the content CO2 of the atmosphere. Experiments were conducted on fodder plants and cereals in a higher atmosphere in CO2 (550-650 ppm) and have shown only for such concentrations, plants have a diminished content of nitrogen and consequently produce less protein . Not only the nutritional quality of plants decreases, but the agrarian ecosystem may be modified with a change in the
growth, survival and spread of herbivorous insects and parasites. This may also have an effect on the decomposition of litter and soil mineralization.

- Teacher. Dr. HJ Weigel, Bundesforschungsanstalt fur Landwirtschaft (FAL)
Institut fur Agrarokologie, Bundesallee 50, 38116 Braunschweig - email:,
Sources: Depeche idw, press release as of Bundesforschungsanstalt
Landwirtschaft (FAL), 13 / 04 / 2005
Editor: Sophie Fourmond,


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