Effect of increased carbon dioxide and ozone on leaf spot pathogens of birch
2002
Syrjala, L. | Poteri, M. (Finnish Forest Research Institute, Suonenjoki (Finland). Suonenjoki Research Station)
Both CO2 and ozone increased the diseased leaf area of clone V5952 in Exp. 1 in the year 2000. The size of spots increased most under ozone fumigation, and the number of spots under ozone and CO2 + O3 fumigations. In clone K1659 all fumigation treatments decreased or had no effect on the DLA, or the number and size of the leaf spots. Also the number of fallen leaves under fumigation treatments was higher in clone V5952 than in clone K1659. Analysis of the year 2001 monitoring results is currently going on
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