Nitrogen and potassium application on yellow mombin initial growth

Abstract

The objective of this work was to evaluate the effects of the application of combined rates of nitrogen and potassium on the initial growth of 'Lagoa Redonda' yellow mombin. The experiment was carried out in a screen house, in a randomized complete block design, with a 52 fractional factorial arrangement, with five N rates (0, 100, 200, 300, and 400 mg dm^-3), five K rates (0, 100, 200, 300, and 400 mg dm^-3), and five replicates. After 360 days, plants were evaluated for height, stem diameter, and number of leaves, as well as for stem, petiole, leaf, shoot, root, and total dry matter. Potassium fertilization and the N x K interaction did not have significant effects on the biometric and biomass characteristics. Nitrogen fertilization influenced the number of leaves, plant height and stem, petioles, leaves, shoot and total dry matter production. Fertilization at 296 mg dm^-3 N increases the total dry matter production in the initial growth of the 'Lagoa Redonda' yellow mombin.