Macronutrients deficiency in Heliconia psittacorum x Heliconia spathocircinata 'Golden Torch'

The objective of this study was to characterize nutritional deficiencies in Heliconia psittacorum x Heliconia spathocircinata 'Golden Torch', through growth indicators, symptomatology and macronutrients contents in leaves and underground plant part. The experiment was carried out in a greenhouse, with eight treatments comprising complete nutrition solution (N, P, K, Ca, Mg, S), solution with individual nutrient omission of N, P, K, Ca, Mg or S and solution lacking all nutrients. The symptoms of nutrients deficiency appeared in the following occurrence order: N, K, P, Mg and S. Deficiency symptoms were: general chlorosis to - N omission; slight chlorosis to - P and - S; dark green leaves and necrosis to - K; marginal chlorosis and necrosis to - Mg. Calcium omission did not cause any visual symptom. Deficiencies in N and P affected more intensely shoot number, leaf dry mass production, total leaf number and leaf area. Among the evaluated leaves, there was a tendency of a highest decrease in the contents in the third leaf.

Bibliographic Details

Main Authors:	Castro,Ana Cecília Ribeiro de, Willadino,Lilia Gomes, Loges,Vivian, Castro,Mario Felipe Arruda de, Aragão,Fernando Antonio Souza de
Format:	Digital revista
Language:	English
Published:	Universidade Federal do Ceará 2015
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000200258
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