STUDIES ON BEET SOIL .2. WEED SEED IN SPE CIAL SAMPLES

48 samples of ''beet soil'' from sedimentation ponds or dry discharge stations in sugar factories and from aggradations with ''beet soil'' h ave been examined for their weed seed potentials. Corresponding the co nditions of storaging (humid: sedimentation ponds, aggradations; dry: dry discharge stations) and the distribution of the samples following ''periods of deposition'', ''depth of sampling'' and ''salt concentrat ion'' shifting in spectrum of plants could be shown. Mainly different species from Chenopodiaceae family have been found. In addition other weeds e.g. Matricaria chamomilla (MATCH), Urtica urens (URTUR), Amaran thus retroflexus (AMARE) appeared in higher numbers. The number of cou nted individual plants/sample was in ''beet soils'' entirely lower tha n in arable land could be expected following references in literature. New plant species directing to weed problems heavily to solve when be et soil was brought back to fields were not found.