Jana Porhajašová

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In 2001–2006, ground beetles were pitfall-trapped in a temperate lowland area of South Slovakia in an experimental field divided in five plots fertilized by four different doses of manure or biosludge (25 t stable manure ha−1, 50 t biosludge ha−1, 50 t stable manure ha−1, 100 t biosludge ha−1 and without fertilization). The field was subsequently sown by(More)
The rook (Corvus frugilegus L.) is one of the greatest corvine birds dependent on open agricultural land. With the onset of spring, hundreds of thousands of rooks flocks which wintered in Slovakia, this area leaves and returns to its breeding grounds in north-eastern Europe. Wintering populations will be replaced by our rooks, in Slovakia nesting, which(More)
In this study, the influence of humus substances on soil structure of six soils (Haplic Chernozem, Mollic Fluvisol, Eutric Fluvisol, Rendzic Leptosol, Eutric Cambisol, and Haplic Luvisol) of different ecosystems (forest, meadow, urban, and agro-ecosystem) in Slovakia was compared. The influence of the fractional composition of humus substances on the(More)
  • 2008
We researched the influence of soil cultivation and fertilization on changes of nitrate, ammonium and inorganic nitrogen content in soil during the monitored vegetation periods (2004/2005 – 2005/2006). This experiment was realized on experimental bases of Slovak University of Agriculture in Nitra – Dolná Malanta on the winter/summer wheat (Triticum(More)
The aim of this study was to evaluate of concentrations of nitrate, ammonium and nitrite nitrogen in the water of National Nature Reserve Čičov oxbow during the years 2010 – 2013. The average concentration of nitrate nitrogen in water of National Nature Reserve during the whole monitored period was 3.42 mg*dm. Maximum average concentration for the whole(More)
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