Effect of different media substrate and humic acid on growth and nutrient absorption of soilless cultured cut rose flowers

This research was performed to investigate the effect of different substrates and humic acid on quantitative and qualitative traits of cut Rose (Rosa hybrida cv. Angelina) in soilless culture. A factorial experiment was carried out in a randomized complete blocks design with three replications. The first factor was humic acid (HA) at 4 concentrations (0, 2, 4 and 6 gr/L) and the second factor was six different combinations of substrate (1- Vermicompost Cocopeat, 2- Vermicompost Perlite 3- Vermicompost Zeolite, 4- Zeolite Cocopeat, 5- Sawdust Cocopeat, and 6- Zeolite Sawdust, as 50:50 ratio). Traits such as stem length and diameter, flower-bud diameter, fresh and dry weights of stem, chlorophyll index, and potassium and phosphorus content were measured. Results showed that application of HA and type of substrate was significantly effective (P