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Roadside Habitats : The Impact of Salinization on the Occurrence, Growth and Reproduction of Two Weed Species Echinochloa crus-galli and Digitaria sanguinalis

Nováková Markéta, Šerá Božena, Cudlín Pavel

Polish Journal of Ecology

2019

Vol. 67, nr 3

186--193

The specific conditions in habitats in the immediate vicinity of roads provide a suitable environment for noxious weeds and invasive species that spread through them to the landscape. Echinochloa crus-galli and Digitaria sanguinalis are problematic weeds of wide-row crops. The field experiment focused on the impact of the roadside habitat salinization on the occurrence, growth and reproduction of these two species. Quantitative vegetative and generative characteristics of the plants were determined. Measurements were carried out at three distances from the edge of the road and on control plots. The results showed that the growth and reproduction of E. crus-galli and D. sanguinalis occur in the period when the values of soil environmental variables correspond to values of non-saline soil according to the criteria for soil salinity assessment. Despite this fact, the average salinity of soil along roadside was still higher than in soil of further distances and we found these levels of salinity to be well tolerated by the study species. Therefore, we conclude that roadsides with the same or higher salt content represent a suitable location for the occurrence and reproduction of E. crus-galli and D. sanguinalis, thus being temporary locations that enable their further spreading to the countryside.

Rośliny halofilne na terenie Kujaw

Leśniak Lucyna

Przegląd Solny

2019/2020

T. 15

107--111

Na Kujawach odnotowuje się największe w Polsce skupisko unikatowej roślinności słonolubnej. Obserwuje się tu wyraźny związek między występowaniem słonorośli a zasolonych gleb, lokalizacją słonych źródeł, złóż soli, ich eksploatacją oraz przemysłem sodowym, który często jej towarzyszy. Obecnie halofity w rejonie Kujaw można spotkać m.in. w okolicach Janikowa i Mątew (dzielnica Inowrocławia) oraz w rezerwatach w Ciechocinku i Błoniu koło Łęczycy, gdzie zidentyfikowano 18 gatunków tych roślin.

In Kujawy there is the most significant concentration of unique salt-tolerant plants in Poland. Their presence is clearly associated with salt-affected soils, natural salt solutions, salt deposits, their exploitation and a soda factories, which often corresponds with this exploitation. Recently, halophytes in Kujawy are to be found in the vicinity of Janikowo and Mątwy (the latter being a district of Inowrocław), as well as within the halophyte reserves in Ciechocinek and Błonie near Łęczyca, where 18 species of such plants have been identified.