Original scientific paper
EVALUATION OF MECHANICAL REGULATION OF INVASIVE HELIANTHUS TUBEROSUS POPULATIONS IN AGRICULTURAL LANDSCAPE
Alexander FEHÉR
; Dept of Sustainable Development, Slovak Agricultural University, Mariánska 10, SK 949 01 Nitra, Slovakia
Lýdia KONČEKOVÁ
; Dept of Ecology, Slovak Agricultural University, Mariánska 10, SK 949 01 Nitra, Slovakia
Abstract
In our research the effect of cutting of H. tuberosus stands have been studied by comparison of both mown (2-4 times) and not mown populations during four years. The repeated mowings reduced the number and viability of ramets (during the growing season the decrease of shoots on not-mown plots was not as rapid as on mown plots). On mown plots there was a higher initiate density in spring in comparison with the not mown populations (the high number of shoots could be induced by the stress generated by cutting during the previous year). During our research no generative organs have been observed on mown plants. Changes in species composition have been also studied. We were not able to confirm the high effectiveness of mechanical control of H. tuberosus, however we observed highly effective mowings in natural (not experimental) conditions.
Keywords
agricultural landscape; Helianthus tuberosus; invasive plants; management of biological invasions; mechanical regulation
Hrčak ID:
52325
URI
Publication date:
27.11.2009.
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