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

Revista Brasileira de Engenharia Agricola e Ambiental, ISSN: 1807-1929, Vol: 20, Issue: 4, Page: 337-342
2016
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Article Description

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 × 4 factorial, corresponding to N doses (0, 120, 180 and 240 g of N hole) and K doses (0, 120, 180 and 240 g of KO hole) with four replicates and five rhizomes per plot, under field conditions. 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 KO holefor a maximum yield of 9.89 stems mper month.

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