The study aimed to evaluate the dry mass production and the extraction of micronutrients by the 'Vitória' pineapple, grown under increasing doses of micronutrients applied in the soil and through leaf fertilization. The test trial was installed in April 2009, in an area of 0.178 ha located in the Baixo Acaraú irrigated perimeter, in the northern region of Ceará state. The statistical design was a randomized block arrangement in a split plot design with four levels of FTE-12 (plots), four levels of leaf fertilization (subplots), four quarterly evaluations (subsubplots) and five replications. The production of shoot dry mass and the extraction of micronutrients were assessed. The dry mass production and the extraction of Fe, Zn, Mn and B were influenced by the physiological age and by the doses of micronutrients applied, either directly to the soil or on the leaves. Higher doses of micronutrients were more expressive allowing higher plant growth, resulting in higher extraction of micronutrients, however, not reaching a maximum point, indicating that the crop can respond to higher doses of nutrients.
Ananas comosus; micronutrients; fertilization
