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Estimation of decorative value of chosen cultivars of Dahlia × cultorum Thorsr. et Reis. treated with flurprimidol

Jerzy Hetman, Krystyna Pudelska, Agnieszka Witek

Department of Decorative Plants
University of Agriculture in Lublin
Leszczyńskiego 58, 20-069 Lublin, Poland
e-mail: ozdobne@consus.ar.lublin.pl

14 cultivars and 7 clons of Dahlia × cultorum Thorsr. et Reis. were grown in 20 cm pots. Flurprimidol as Topflor 015 SL (1.5% flurprimidol) was applied as a single foliar spray at concentration 112.5 mg dm-3. Growth regulator was applied 4 weeks after pinching. Most of the flurprimidol treated plants were significantly smaller than untreated ones. The retardant reduced canopy diameter and peduncle length of majority examined cultivars. Flurprimidol had no significant effect on the inflorescence diameter.

Hetman J., Pudelska K., Witek A., 2004. Estimation of decorative value of chosen cultivars of Dahlia × cultorum Thorsr. et Reis. treated with flurprimidol. Folia Horticulturae 16/1: 153-159.