Abstract
Weed
flora of winter and spring small grain crops (wheat, barley, oats, and
rye) was surveyed in lowland and mountainous areas of the central part
of Serbia, which are dissimilar in environmental conditions, primarily
climate and soil characteristics, and crop management practices. The
weed community of the mountainous area was more diverse that of the
lowlands. The weed community of the mountainous area was characterized
by a significantly higher proportion of dicotyledonous species, mainly
hemicryptophytes, probably due to insufficient tillage and the
consequent impact of surrounding grassland vegetation. Different
environmental conditions and crop managements of the 2 sites caused the
occurrence of 2 separate weed communities, the ass.
Consolido-Polygonetum avicularae in the lowland area, and ass.
Galeopsi-Brassicetum campestrae in the mountain area of the surveyed
region in central Serbia.
