Print version ISSN 0100-6916
MURAISHI, Reginaldo I.; GALBIATTI, João A.; NOBILE, Fabio O. de and BARBOSA, José C.. Organic compound as substrate in the formation of the yellow-ipe (tabebuia chrysotricha (mart. Ex dc.) Standl) sedlings irrigated with residuary water. Eng. Agríc. [online]. 2010, vol.30, n.6, pp. 1081-1088. ISSN 0100-6916. http://dx.doi.org/10.1590/S0100-69162010000600009.
The need to study the use of waste of tree pruning is of great importance to solve the environmental problems of solid waste in the urban areas along with the household waste. The study of these materials was evaluated with the development of seedlings of yellow- ipe (Tabebuia Chrysotricha (Mart. Ex DC.) Sandl) in different types of substrate mixtures and water for irrigation. The experiment was installed at the Department of Rural Engineering in the Faculty of Agricultural Sciences and Veterinary - UNESP, Jaboticabal Campus, in a randomized block design, with 8 substrates, 2 qualities of water and 4 repetitions, totaling 64 plots. Each plot was composed of 30 plants (5 lines of 6 plants), being regarded as useful, the 3 lines of 4 plants of the central plot. Eight substrates were tested, resulting from the combination of commercial substrate, composed of garbage and of trees pruning with 2 types of irrigation water (clean water and residuary) with 4 repetitions. To track the development of the yellow- ipe seedlings, were evaluated the height of the shoots (H) and the diameter of the stem (D). The characteristics were evaluated at 21, 42, 63 and 84 days after the emergency. The analysis of the results allowed to conclude that the substrates studied promoted significant difference in average height and diameter of the stems in all periods of assessment. The substrate 4, 5 and the residuary water showed the best results in the development of the yellow-ipe seedlings.
Keywords : Height of plants; stem diameter; water quality.