Hort. Sci. (Prague), 2025, 52(2):103-110 | DOI: 10.17221/42/2024-HORTSCI

Effect of compounds used for soaking narcissus bulbs on mycelium coverage of bulbs and substrateOriginal Paper

Adam Tadeusz Wojdyła ORCID...¹, Jacek Stanisław Nowak ORCID...¹, Jan Bocianowski ORCID...², Monika Kałużna ORCID...¹, Jacek Wiśniewski³, Emilia Waszkiewicz⁴

¹ The National Institute of Horticultural Research, Skierniewice, Poland

² Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Poznań, Poland

³ Horticulture Farm Jacek Wiśniewski General, Wiązowna, Poland

⁴ Emi Agro Emilia Waszkiewicz, Otwock, Poland

In the experiments, two compounds were used: hydrogen peroxide with silver (H2O2-Ag+) and captan, pyraclostrobin + boscalid and methyl thiophanate + tetraconazole to soak narcissus bulbs before planting for the period of 20 minutes. The bulbs were planted in such a way that 2/3 of the bulb was above the surface of the substrate. All the pots with bulbs were subsequently placed in plastic boxes and transferred to a cooling chamber adjusted precisely for 9 °C and 94–99% air humidity. During the rooting of the bulbs in the cold room after 4, 8, 12 and 15 weeks, and then in the greenhouse after cutting the above-ground parts, the observations of the bulbs and percentage substrate coverage by the fungi most frequently isolated in the previous observations. The research showed that H2O2-Ag+ and fungicides used for soaking significantly limited the fungal development on bulbs and also on the substrate during the rooting period in the cold store and after they were placed in the greenhouse until the flowering.

Keywords: bulb rooting; hydrogen peroxide; fungicides; inhibition; fungi on bulb surface and substrate

Received: March 11, 2024; Revised: July 25, 2024; Accepted: August 1, 2024; Prepublished online: April 22, 2025; Published: June 26, 2025  Show citation