Nitrogen and potassium fertilization in yield and macronutrients contents of heliconia cv. Golden Torch

Márkilla Z. Beckmann-Cavalcante, Genilda C. Amaral, Alcimar de S. e Silva, Leonardo P. da S. Brito, Augusto M. N. Lima, Ítalo H. L. Cavalcante
2016 Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi  
This study aimed to evaluate the effect of nitrogen (N) and potassium (K) fertilization in yield and contents of macronutrients in heliconia plants (Heliconia psittacorum x Heliconia spathocircinata Aristeguieta) cv. Golden Torch. The experiment was set in a randomized block design, in a 4 x 4 factorial, corresponding to N doses (0, 120, 180 and 240 g of N hole-1) and K doses (0, 120, 180 and 240 g of K2O hole-1) with four replicates and five rhizomes per plot, under field conditions. After one
more » ... nditions. After one year of cultivation, yield (number of flower stems per square meter) and the leaf contents of N, P, K, Ca, Mg and S were determined. The applied N doses did not influence either yield or the leaf contents of the evaluated macronutrients. K fertilization favored the increase in leaf K content and the decrease in the contents of P, Ca and Mg in leaves of heliconias. Under the conditions of this experiment, it is recommended to apply 161.46 g of K2O hole-1 for a maximum yield of 9.89 stems m-2 per month.
doi:10.1590/1807-1929/agriambi.v20n4p337-342 fatcat:cv7bvcf435aqtemb6n6ip7ep4e