Resumo

GOMEZ, Susana; BONILLA CORREA, Carmen Rosa  e  MENJIVAR FLORES, Juan Carlos. Absorption of nutrients in Zantedeschia elliottiana Crystal Blush and its relationship with biomass production in the Colombian coffee-growing conditions. Acta Agron. [online]. 2010, vol.59, n.4, pp.462-472. ISSN 0120-2812.

In a commercial crop in the municipality of Pereira, Risaralda, Colombia, it was assessed the nutrient extraction of Zantedeschia elliottiana 'Crystal Blush' and its relation to dry matter accumulation and production of flower stalks and bulbs during the first production cycle. We used a randomized complete block design (RCBD) with 4 treatments corresponding to different levels of fertilization and three replications, characterizing changes in the concentration of nutrients in bulbs and aereal part of the plant at each stage of development, through destructive sampling of tissue at 28, 49, 63, 77, 98 and 140 days after sowing. Concentrations of N, Ca, Mg and B in the bulb and foliar concentrations of N, Mg and Cu in the flowering season, directly influence the number of commercial shoots while the leaf-level contents of Ca, Mg and S for weeks 7 to 10, have a direct impact on the percentage of tuberization; to obtain commercial production of 160 stems per square meter and 21.7 ton/ha of bulbs, it is necessary the input of 248 kg/ha N, 42 kg/ha P, 305 kg/ha K, 103 kg/ha Ca, 21 kg/ha Mg and 33 kg/ha of S.

Palavras-chave : Fertilization; nutritionals requirements; nutrients extraction; bulbs production; Zantedeschia elliottiana.

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