Gladiolus production and nutritional status as a function of silicon application to the substrate1

Abstract

Gladiolus is among the most traditional and important cut flowers in Brazil. Silicon (Si) is an element that has increased the production and quality of some ornamental plants. This study aimed at evaluating the production and nutritional status of gladiolus cultivars under greenhouse conditions, according to the Si doses applied to the substrate. The experimental design was randomized blocks, in a 3 x 4 factorial scheme, being three gladiolus cultivars ('White Friendship', 'Rose Friendship' and 'Red Beauty') and four Si doses (0 mg dm-3, 150 mg dm-3, 300 mg dm-3 and 600 mg dm-3), with five replicates. Morphological traits and leaf Si, macro and micronutrients were evaluated. 'White Friendship' and 'Red Beauty' developed taller plants, with a higher diameter and spikes heavier and longer than 'Rose Friendship'. The order of leaf nutrient concentrations for all the cultivars evaluated was the same (K > N > Ca > Mg > S > P > Fe > Mn > B > Zn > Cu), with all of them being classified as Si non-accumulators. Neither the evaluated morphological variables, nor the uptake of the nutrients N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn, were affected by the Si supplementation, suggesting that the addition of Si to the substrate does not enhance the gladiolus production.

Ácido salicílico, temperatura e períodos de armazenamento na conservação de hastes florais de gladíolo provenientes do sistema de plantio direto orgânico

“…E ainda, os cormos são utilizados para replantio da cultura ou para exportação. Importante ressaltar que a qualidade do bulbo também é um fator que influencia na qualidade da haste (ZANÃO et al 2017). O cultivo tradicional de gladíolos é realizado em canteiros em sistema convencional, com intenso revolvimento do solo e com aplicação de agroquímicos (RODRIGUES et al 2010).…”