Effect of different growth media on the growth and flowering of beefsteak begonia (Begonia erythrophylla)

Abstract: Experiments were conducted over a two-year cropping season to determine the effect of growth media on rooting, growth and flowering. Nine growth media viz., river sand (RS), topsoil + poultry manure (T+P), topsoil (T), river sand + poultry manure (RS+P), sawdust (S), topsoil + river sand + poultry manure (T+RS+P), topsoil + sawdust (T+S), sawdust + river sand (S+RS), topsoil + poultry manure + river sand + sawdust (T+P+RS+S) were used for the study. It was found that growth media significantly (P>0.05) affected the number of branches and branch length per plant; number of leaves and number of flowers per plant. The quantity of flowers produced per week varied according to each growth media as follows: Begonia planted in topsoil + poultry manure (4:1) produced the highest number of flowers per plant, while sawdust + river sand (3:1) produced the least number of branches per plant, branch length per plant, number of leaves per plant and number of flowers per plant in the two years of the experiment. The slow growth, poor development and late blooming in soil + sawdust (4:1) and sawdust + river sand (3:1), could be as a result of inadequate nutrients in the substrates. Topsoil + poultry manure (4:1) growth medium (with or without river sand), appeared to be the suitable growth medium that will significantly enhance early rooting, establishment, growth and development of beefsteak begonia and sustain flower production for a good length of time.