Efeito de frequências de irrigação na aclimatização de mudas micropropagadas de abacaxizeiro ornamental.

Abstract

The ornamental pineapple (Ananas comosus var. erectifolius) occupies, currently, the second position in the ranking of exports of flowers and ornamental plants of the Ceará State. In spite of its economic importance, there’re no researches related to water management application during the acclimatization phase. Then, in order to provide technical and scientific information about the correct culture management, the present experiment had as purpose to evaluate the effect of different irrigation frequencies in the development of the micropropagated seedlings of ornamental pineapple. The research was carried out in a greenhouse of the Embrapa Tropical Agroindustry located in Fortaleza, CE (3º44' S and 38º33' W). The experimental design was a randomized block with 4 treatments and 5 repetitions for the variables: number of leaves, the largest width of the 3rd leaf and the largest diameter of the rosette, and with 4 treatments and 4 repetitions for the variables root and shoot fresh/dry weights. The treatments consisted of 4 irrigation frequencies: 1, 2, 3 and 4 irrigations a day. The results of this study demonstrated that frequency of two daily irrigations was the most efficient at providing the best development of the micropropagated seedlings of ornamental pineapple.