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

Author:

Beckmann-Cavalcante Márkilla Z.1,Amaral Genilda C.2,Silva Alcimar de S. e2,Brito Leonardo P. da S.2,Lima Augusto M. N.1,Cavalcante Ítalo H. L.1

Affiliation:

1. Universidade Federal do Vale do São Francisco, Brazil

2. Universidade Federal do Piauí, Brazil

Abstract

ABSTRACT 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 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.

Publisher

FapUNIFESP (SciELO)

Subject

Agronomy and Crop Science,Environmental Engineering

Reference31 articles.

1. Produção de helicônia Golden Torch influenciada pela adubação mineral de orgânica;Albuquerque A. W. de.;Revista Brasileira de Engenharia Agrícola e Ambiental,2010

2. Produtividade e qualidade pós-colheita de Helicônia Golden Torch submetida a fontes e doses de silício;Albuquerque A. W. de;Revista Brasileira de Engenharia Agrícola e Ambiental,2014

3. Conservação de inflorescências de helicônias previamente adubadas com doses crescentes de nitrogênio e potássio;Amaral G. C.;Revista Caatinga,2015

4. Heliconias: A new challange for the Colombian floricultural industry;Atehortua L.;Biotechnology and Development Monitor,1997

5. Produção de inflorescências de helicônia cv. Golden Torch sob adubação nitrogenada e potássica;Beckmann-Cavalcante M. Z.;Comunicata Scientiae,2015

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