INFLUENCE OF FERTILIZERS OF OSMOCOTE TYPE AND TOP DRESSING ONTO THE GROWTH AND NUTRITION STATE OF CAREX COMANS BERGGR. FROSTED CURLS

E. Wojciechowska, M. Henschke, K. Araszkiewicz, M. Kozłowska, E. Kozik, A. Błaszyk

Abstract: The experiment on the influence of fertilizers of Osmocote type and top-dressing onto the growth and nutrition state of Carex comans ‘Frosted Curls’ was conducted in the years 2008 and 2009 in the greenhouse. The plants were cultivated in pots. During the process of basic fertilization two fertilizers Osmocote (3-4M): Osmocote Exact Standard (OES ) 16:11:11 and Osmocote Exact High Start (OE HS) 11:11:19, were applied. Each fertilizer was used at the dosage of 2 and 4 g dm-3. Within each dosage some of the plants were top dressed. Measurements were taken after 9 and 18 weeks of cultivation. Optimal quality of plants was obtained after 18 weeks of cultivation with the use of OE HS at the dosage of 2g·dm-3 together with the simultaneous use of top dressing. These plants are characterised by longer leaves, higher clump circumference and higher dry matter of their aboveground part while compared to the other plants used in the experiment. The intensive plant growth was observed between 9 and 18 week of cultivation and was totally independent of the plant development at the initial state. The plants cultivated in the substrate with 2g·dm-3 of OES fertilizer contained the lowest amounts of nitrogen and calcium while those cultivated with 4g·dm-3 OES fertilizer contained the lowest amounts of potassium.

Keywords: fresh matter; growth; leaves length; nitrogen; potassium; slow-release fertilizers

Date published: 2017-10-10