engleski

Influence of low soil pH on growth and development of Gladiolus hybridum L. in greenhouse

Gladiolus are very decorative flower species that belongs to family Iridaceae. Upright stems, thin leaves in the shape of a sword and a long beautiful flowers make gladiolus a perfect flower for every garden and an essential element of big floral arrangements. The flowers that appear in almost all colors blossoms depending on variety after 70-90 days after planting (early blooming varieties), 90- 110 days (mid-season varieties) and late blooming varieties after 120 days. Therefore, growing them all, the bloom in garden may last from April through September. Gladiolus is herbaceous perennial species that are easy to grown from corms. They require mild climate and lot of sun for normal development and regular flowering. Number of day that takes for gladiolus to bloom is most affected by temperature, soil properties and quality of corms. Thus, the aim of this study was to evaluate corms size (4, 5, 6 cm) of two gladiolus varieties (Oscar and Amsterdam) at different soil pH values (5, 07 and 6, 5) on growth and development of gladiolus in greenhouse. Results showed significantly better development of gladiolus plants grown from largest corms of both investigated varieties independently on soil pH. Generally, better development of gladiolus plants was recorded on soil with higher pH value. As regard to varieties, Amsterdam showed slightly better development on acid soil in comparison with Oscar. It can be concluded that greater corm size and slightly acid soil are more suitable for gladiolus production.

gladiolus ; corms size ; soil pH ; growth and development

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