Weed communities of the Załęcze Nature Park (Wieluń Upland)

Abstract

Arable lands occupy about 30 percent of the area of the Załęcze Nature Park. Segetal weed associations in cereal plantations and in root crops were studied, and there were distinguished 6 associations, 3 communities, and several phytosociological units of lower rank. From geographical and ecological points of view, the presence of Arnoserido-Scleranthetum and Lamio-Veronicetum politae is of great significance here. Among species of weeds rare in this part of Poland are: Sherardia arvensis, Stachys annua, Bromus secalinus and others (for summary see page 565-566).