Effect of treatment of narcissus bulbs with hydrogen peroxide with silver and fungicides on plant growth and development

The aim of the research was to demonstrate the possibility of using hydrogen peroxide with silver (H2O2-Ag+) and selected fungicides for treating narcissus bulbs and their impact on plant growth and development. In the experiments were used compounds such as hydrogen peroxide with silver (H2O2-Ag+) and captan (Biszop 80 WG), pyraclostrobin + boscalid (Signum 33 WG) and methyl thiophanate + tetraconazole (Yamato 303 SE) to soak narcissus bulbs before planting for the period of 20 minutes. The research showed that stimulation of growth and development by some of the tested concentrations of H2O2-Ag+ used to treat bulbs was shown with regard to plant height, leaf length, fresh flower weight, dry flower weight, the number of days from taking plants out of cold storage to flowering, the weight of fresh above-ground parts without flowers, the weight of dry above-ground parts without flowers, the diameter of the flowers, the height of the flowers, petals length, the width of the petals and the length of the corolla. In turn, the tested fungicides stimulated the length of leaves, the fresh weight of plants without flowers, and Signum 33 WG and Biszop 80 WG also the dry weight of flowers. No phytotoxicity of hydrogen peroxide with silver and tested fungicides was found for narcissus.