CONCENTRATION OF NUTRIENTS IN CUT CHRYSANTHEMUM, CULTIVATE IN A HYDROPONIC SYSTEM, ON THE RESPONSE TO CALCIUM DOSES

To verify the dry matter and concentration of nutrients in the leaves of different varieties of chrysanthemum in response to the calcium an experiment was conducted in a green house using a three-phase hydroponic system on a gravel substrate. It was set up in a completely random blocks with split-plot design, using four calcium doses (1.00; 2.50; 4.00; 5.50 mmol L-1) in the plots disposed and chrysanthemum varieties (Blush Hawai, Calabria and Dark Flamengo) in the subplots with three repetitions. Complete nutrient solutions were used with the different calcium doses. The following factors were evaluated: dry matter weight of leaf, stem, inflorescence and part aerial and concentration of nutrients in the leaves. The varieties Calabria and Blush Hawai were the most productive of dry matter. The best development and growth of the varieties of chrysanthemum was obtained when used the nutrient solution with 4,0 mmol L-1 of calcium, also happening an appropriate concentration of nutrients in the leaves. It wasn't observed effect of calcium concentration in dry matter.