Dynamics of weed species in agricultural crops in one rural district of Podlaskie province.

摘要

Field observations on the occurrence dynamics of species were carried out in the district of Dobrzyniewo Duze in 2003-2007. On the basis of 466 phytosociological evaluations, 123 weed species were recorded in cereal crops. The results of performed research revealed the increase of percentage share of Avena. fatua, Centaurea cyanus, Artemisia campestris, Elymus repens, Apera spica-venti, Setaria glauca. The occurrence dynamics of the following weed species: Matricaria inodora, Viola arvensis, Myosotis arvensis, Conyza canadensis and Equisetum arvense was similar in individual years of presented research.