Wydano przy pomocy finansowej Uniwersytetu Łódzkiego oraz Komitetu Badań Naukowych
EN
A list of 24 species of weeds was compiled on the basis of phytosocjological researches and floristic records of the biotypes of the Bug River geomorphological territories in the Podlasie region. Four hundred and twenty phytosocjological releves were carried out during the researches, in 1994-1995. The general characteristic of the arrangement of respective species localities are given. Alongside this, the state of preservation of these localities is presented. The results of the detailed analysis of the resources concern such units of classification as: Herniaria hirsuta, Herniaria glabra, Polycnemum arvense, Agrosiemma githago, Bromus secalinus, Melandrium noctiflorum.
Wydano przy pomocy finansowej Uniwersytetu Łódzkiego oraz Komitetu Badań Naukowych
EN
This study compares results of observations of winter cereal cultures in the area of the Kotuń parish in two investigated periods (1979-1980 and 1989-1990). In cultures of rye, triticale and winter wheat, 124 species were recorded and investigated during the investigated period. Over 10 years the stability of occurrence and covering decreased in 34 species o f winter cultures. The species included very rare weeds, such as Agroslemma githago and Neslia paniculata, and many acid soil species, such as Scleranthus annuus, Anthemis arvensis, or Rumex acetosella. Plantago maior subsp. intermedia, Juncus hufonius and Filaginella uliginosa were species that have disappeared.
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