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Investigation of weed vegetation on wet segetal fields in South-Western Hungary

Summary
The complete article is written in German
Inland water on soils with bad water balance can lead to serious yield losses. Soil management and plant protection is nearly impossible in these marshy vernal pools, wherefore very special vegetation develops. On the basis of 58 phytocoenological surveys made in South-Western Hungary the vegetation of the vernal pools will be characterised. From phytosociological point of view our surveys stand to Ranunculo sardoi-Alopecuretum geniculati and Myosuro-Ranunculetum sardoi associations the nearest, where the proportion of Nanocyperion elements is significant. The following endangered species occure in these vernal pools: Elatine alsinastrum, Limosella aquatica, Lindernia procumbens, Montia fontana, Peplis portula.
However vernal pools in segetal fields are causing losses from economical aspects, they can contribute to increase agrobiodiversity and have an important role in maintaining numerous threatened and protected plant species (Red Data List, IUCN, Corine Biotopes Project, Bern Convention).

german version

Keywords/Stichworte:Inland water; vernal pools; Ranunculo sardoi-Alopecuretum geniculati; Myosuro-Ranunculetum sardoi; Nanocyperion species and associations

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Autor:R. PÁL, Adaptation-Biologische Forschungsgruppe der Ungarischen Akademie an der Pécser Universität, Lehrstuhl für Botanik, H-7624 Pécs, Ifjúság u. 6., Ungarn, E-Mail: palr@gamma.ttk.pte.hu;
G. PINKE, J.P. KOLTAI, Universität von West-Ungarn, Landwirtschaftliche Fakultät, H-9200 Mosonmagyaróvár, Vár 2.;
E. OLÁH, J. CSIKY, Universität Pécs, Fakultät für Naturwissenschaften, Lehrstuhl für Botanik, H-7624 Pécs, Ifjúság u. 6.

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