A factorial fertilizer trial with two levels each of N, P and K (25 and 50 gm per bush) was conducted on Super Star cv. of rose at the Punjab Agricultural University, Ludhiana, during 1973. The experiment was conducted according to split plot design with mulched or unmulched roses comprising the main plots.
The high level of N was highly effective in increasing the stem diameter and stem length of rose bushes and the flower number, stem length, weight and diameter of the flowers. There was no significant difference among various fertilizer treatments as far as the vase-life of cut flowers was concerned. No colour variation in flowers was displayed by different fertilizer treatments. The N, P and K content in rose leaves increased with the increasing soil application of the corresponding nutrients. The mulching of rose bushes did not materially affect any of the attribute measured in this experiment.
