, Volume 86, Issue 2, pp 232-237
Date: 25 Dec 2010

Observation of Sward Destruction Caused by Irrigation with Toxic Microcystis Morphospecies Containing Water in Southern Hungary

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In the summer of 2006 bloom-like phenomenon occurred in a garden pond in Szeged, Southern Hungary. After regular watering of a sward with pond water containing the algal mass, destruction of garden grass occurred. Microcystis aeruginosa, Microcystis viridis, Microcystis ichthyoblabe, and Microcystis wesenbergii were identified by light microscopy in the water sample; microcystin-FR, -LR, -RR and -YR were determined by matrix-assisted laser desorption/ionization—time-of-flight analysis. There was an 80% decrease in the green mass (87% in chlorophyll-content) of the grass in a 1 m2 area of the garden irrigated with pond water.