Electronic Theses and Dissertation

Abstract the effect of growing media and gibberellins on growth and flowering rose. the objective of the experiment was to find out the best growing media composition and gibberellins concentration on growth and flowering rose. this experiment was conducted in agriculture faculty field experiment of syiah kuala university, banda aceh from may to july 2013. this experiment used a factorial randomized block design with three replications and three plants/treatment unit. first factor was growing media consists of 3 types of media using a volume ratio of 1:1:1 (v/ v), namely: soil + manure + sand, soil + manure + chaff, and soil + manure + ricehull charcoal. second factor was gibberellins concentration consists of four levels, namely: 0 ml l-1, 1 ml l-1, 3 ml l-1, and 5 ml l-1. the results showed that the best number of (2,75 branches at 6 weeks after planting) and branch length (23,09 cm at 7 weeks after planting) observed in the soil + manure + chaff growing media. application of 1 ml l-1 gibberellins produced the best number of branches (4,39 branches at 8 weeks after planting). the number of leaves on first flower stalks (8,83 leaf) and flower diameter (8,21 cm) are found in application of 3 ml l-1 of gibberellins. there is no significant interaction between the growing media and gibberellins on all observed variables. key words: rose, growing media, gibberellins.