The planting of native forest species is an activity which in addition to replacing forest resources can also lessen the environmental impacts resulting from their extraction. However, its success depends, among other things, on the knowledge regarding the nutritional needs of the species to be utilized. An experiment was carried out in a greenhouse aiming to acquire information on the mahogany (Swietenia Macrophilla) seedling micronutrient requirements. A low fertility Yellow Latosol, collected from a 20-40 cm deeplayer, located at the University Federal of Amazonas (UFAM) Campus southern sector, was used as substract. We tested seven treatments an four replicated arranged in a random block experimental design, under the lacking element technique. Treatments were as follows (Liming + N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, Zn and Mo), and the omission of a catiônico micronutrient at a time (-B, -Cu, - Fe, -Mn and - Zn). The following features were assessed after four months: aerial part height, diameter, and aerial part and root dry matter yield. The resulted obtained in this research allowed to conclude that the mahogany seedlings had their growth compromised by the low availability of cooper in the substract, thus its application is necessary so that the plants would a normal growing, compatible with the their usual growth, when the substract conditions were appriate.
Plant nutrition; Cupper; Swietenia macrophila
