Avaliação de diferentes misturas de substratos e doses de irrigação para o Kalanchoe CV ‘Gold Jewel’

Abstract

The cultivation of ornamental plants is growing with the economy of Brazil, gaining its recognition in the agricultural environment. The growth of floriculture is due to the diversification of products, from ornamental flower seedlings to tall tree seedlings, besides the favorable climate and amplitude of the soils allowing the cultivation of several species of flowers. The objective of this work was to evaluate the development of Kalanchoe blossfeldiana Poelln 'Gold Jewel' in different irrigation dosages and substrates composed of industrial and vegetable materials. Irrigation slides were applied with the dosages in relation to the capacity of water retention in the vessel (CV), being these, 50, 38, 26 and 14% of CV. The scheme was bifatorial 7x4 (substrate X irrigation) in the completely randomized design, with six replications. The total water consumption, plant height, leaf area, number of leaves per plant, time of formation of the vegetative structure, time of flowering, diameter of canopy, number of flowers, diameter of the stem were analyzed. The data were submitted to analysis of variance, all variables being significant at the 1% probability level, when applied to the Tuckey test, except for the variable height of plant and leaf area that did not have significant interaction within the substrate type factor, all the analyzed parameters fit the quadratic polynomial equation. The average daily consumption for substrates, S1, S2, S3, S4, S5, S6 and S7 were respectively 1.06, 1.32, 1.71, 1.37, 1.30, 1.48, 29 mm.da-1. The culture coefficients obtained were 0.53, 0.54, 0.75 and 0.76 for phases I, II, III and IV.