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Synchronizing the timing of fertilizer applications with plant nutrient demand increases the nutritional efficiency and decrease the cost of production. The objective of this study was to determine the growth and the nutrient uptake and export by heliconia ‘Red Opal’. The experiment was carried out in a shade house and Heliconia psittacorum ‘Red Opal’ rhizomes were planted in soil classified as Arenic Kandinstults. The experimental design was completely randomized with nine plant sampling (zero; 30; 90; 150; 210; 270; 330; 390 and 450 days after planting) and five replicates. Leaves, sheathing leaf bases, flower stem, rhizomes and roots were collected every sampling and dry mass and nutrients accumulation were determined. Heliconia plants showed slow initial development but from the 210 days of planting, which corresponds with the beginning of the flower stem harvest there is a marked increase in dry mass accumulation. Nutrient accumulation followed the decreasing order: K > N = Ca > P = Mg > S > Fe = Mn > Zn > Cu = B. Potassium and calcium were the most exported macronutrients by heliconia flower stem and among the micronutrients, manganese was the most exported.

Growth, nutrient accumulation and export by heliconia ‘Red Opal’