Published in Scientific Papers. Series B, Horticulture, Vol. LXVIII, Issue 1
Written by Alina-Ștefana OZARCHEVICI, Maria APOSTOL, Ciprian CHIRUȚĂ, Roberto Renato BERNARDIS, Lucia DRAGHIA
The study was carried out on three ornamental varieties of Ipomoea batatas ('Heart Bronze', 'Black', 'Heart Lime') grown in the field and in pots. Four types of substrate were used for pot culture: garden soil + peat, garden soil + peat + hydrogel, garden soil + peat + coconut fiber, garden soil + peat + coconut fiber + hydrogel. In field conditions, the plants from the three varieties were distinguished by a larger size than in the pots. Also, in the field, the higher degree of stem branching was recorded in 'Black' and the longest branches in 'Heart Lime'. The substrate garden soil + peat favored the length of the branches in all the varieties studied. The garden soil + peat + hydrogel at 'Heart Lime' and the garden soil + peat + coconut fiber at 'Heart Bronze' had a positive effect on the degree of branching. The use of two-factor ANOVA analysis indicates a strong influence of both the variety and the cultivation system on the morphological characters analyzed.
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