Abstract:
In order to estimate the content pattern of Fe, Mn and B by four different grape varieties, cultivated under similar growth conditions during the season 1992, these micronutrients and dry weight of plant material were determined in several plant parts sampled at different phenological stages.
Pronounced genetic differences were observed as well for the variation of the concentration during the growing season as for the total content of Fe, Mn and B.
Total B absorption increased continuously during the growing period, while after the first hight energy requiring phenological stages a decrease of the B concentration in different parts (berries, laminae, petiols) was observed.
Although total content of Fe and Mn was quite similar, antagonistic phenomena were observed for their concentrations in plant parts at different phenological stages.
|