COMPOSIÇÃO MINERAL DO RIZOMA E RAIZ EM PLANTAS DE Strelitzia augusta SOB DEFICIÊNCIAS DE MACRONUTRIENTES.

The objective was to evaluate the nutritional content and accumulation of the rhizome and root of Strelitzia augusta plants, in nutrient solution, under macronutrient deficiency. The experiment was carried out in a greenhouse at DCS / UFLA, Lavras - MG. The statistical scheme used was the DIC with three replications, containing seven treatments, in nutrient solution. The treatments were: complete nutrient solution (control) and nutrient solutions with individual omissions of N, P, K, Ca, Mg and S. After germination, the seedlings were transferred to the complete nutrient solution with 10% of its ionic strength (adaptation period), which remained with constant aeration. The plants were selected for size uniformity and transferred to plastic pots (5L) with 100% nutrient solution, in which the treatments were applied. The plants were harvested after 180 days, after which the dry matter was collected and chemical analysis of the rhizome and roots of the plants was performed. The omission of macronutrients affects the production of dry matter from the rhizome and roots of the plant, as well as promoting changes in the contents and accumulations of nutrients. Deficiencies of macronutrients cause changes in the contents and accumulations in the rhizome and roots of this species, affecting the performance of the plant. [ABSTRACT FROM AUTHOR]