(Table 4). Foliage development and low leaf fresh
weight of the plants grown in the substrate 3 was
probably related to too low calcium content in this
media (Table 2). Calcium deficiency in ivy pelargonium
(Pelargonium peltatum (L.) L’Her.) was
manifested by a decrease in the number of shoots
and inflorescences and the weight of shoots, leaves
and inflorescences [Mikesell 1992].