At the stubble-fields, especially maintained through a long period after the cereal harvest, there are numerous segetal flora species which often are not meet in the crop canopy. A status of these flora species is usually ...

A list of 34 recessive weed species occurring on loessial soils of the Nałęczów Plateau was prepared on the basis of investigations carried out in 1987-1990 and literature data from 1948-1958. The list includes: 1 extinct ...