engleski

Effect of substrates on growth and development of zinnia (Zinnia elegans)

Zinnias are ornamental species which are not demanding for breeding, sunny and warm position with loamy well-drained soil is sufficient. The aim of the research was to compare the growth and development of Zinnia (Zinnia elegans Jacq.) in a sunny place, during spring and summer period, in three substrates of various physical and chemical properties (Potgrond H, Florabella and soil). The seeds were sown in PVC containers (Pöpellmann TEKU (EP 2128/20) 28 cm x 21cm x 6 cm) with 20 sowing places (volume 150 ml). After developing four leaves, plants were transplanted into PVC pots (Φ 9 cm) filled with the same substrate. The pot trial was conducted as a randomized complete design with four repetitions. Four weeks later on the developed plants, following values has been measured: plant mass, plant height, plant height above ground, mass of the above-ground part of the plant and the number of leaves. Plants grown in Florabella substrate had higher values than plants grown in Potgrond substrate and soil. Statistically significant difference (P≤0.01) has been found between the values of plants grown in soil and substrates Potgrond H and Florabella.

zinnia ; substrate ; growth ; developement

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