Nutrient uptake dynamics of Gloriosa for cut flower

Abstract Gloriosa superba L. is a recently introduced tropical species in Argentina, cultivated as cut flower. It extremely important to know the nutritional demands of crop provide optimal amounts nutrients at each stage, achieving quality and good yield flowers, reducing production costs environmental impact. The objective this work was determine dynamics nutrient absorption cultivation G. for facilitate creation fertilization program, order avoid deficiencies contribute sustainable production. Tuber composition analyzes were carried out and, on other hand, an essay installed greenhouse beds, taking samples seven moments cycle. Fresh matter dry stems, leaves, tubers, roots chemical analysis aerial organs measured obtain curve. verified that only around 20% provided by tuber, being necessary external contribution from initial stages crop. rate growth accumulation shown double sigmoid, with maximum peaks vegetative stage stem elongation beginning flowering. Nutrient absorbed following order: N>K>Mg>Ca>P>Fe>Mn>Zn>Cu. Fertilization rich N, P, Fe recommended balanced during visible shoot Ca, K, Mg, Mn, Zn, Cu