Os bioestimulantes afetam o crescimento, a produção e a qualidade de Eustoma grandiflorum L. e Matthiola incana L.
DOI:
https://doi.org/10.1590/2447-536X.v31.e312816Palavras-chave:
ácido húmico, alongamento do caule, antioxidantes, isabion, longevidade pós-colheita, pulverização foliarResumo
O lisianthus (Eustoma grandiflorum L.), membro da família Gentianaceae, e o goivo (Matthiola incana L.), membro da família Brassicaceae, são amplamente cultivados como flores de corte e estão ganhando popularidade nos mercados paquistaneses nos últimos anos. Este estudo teve como objetivo avaliar a eficácia de bioestimulantes selecionados na melhoria do crescimento, rendimento e qualidade de lisianthus e goivo na Floriculture Research, Institute of Horticultural Sciences, University of Agriculture, Faisalabad, durante os anos de 2022-2023. O experimento foi estabelecido individualmente para cada espécie para elucidar os efeitos de três produtos diferente, sendo eles: Isabion (3 mL L-1), ácido húmico (0,4%) e Corteva XYZ (3 mL L-1). Ambos os experimentos foram dispostos em delineamento de blocos casualizados completos (RCBD) com três repetições de 20 plantas cada. Os bioestimulantes foram aplicados na dose de 3 mL L-1 de Isabion e Corteva XYZ e de 0,4% de ácido húmico, os quais foram pulverizados três vezes em intervalos de quinze dias até a colheita de cada espécie, começando quinze dias após o transplantio. Os resultados demonstraram diferenças significativas entre os tratamentos para Eustoma grandiflorum L. e Matthiola incana L. Lisianthus obteve o menor tempo de produção (59 dias) quando pulverizado com Corteva XYZ, enquanto a aplicação de Isabion em goivo produziu flores mais cedo (75,6 dias) em comparação com outros tratamentos testados. A aplicação de Isabion aumentou significativamente a altura da planta (60,3 e 79,6 cm), diâmetro da flor (39,8 e 4,2 mm), diâmetro do caule (4,0 e 6,1 mm), peso fresco do caule (77,6 e 86,1 g), peso seco do caule (16,9 e 15,1 g) e vida de vaso (8,8 e 7,5 dias) de lisianthus e goivo, respectivamente. A maior área foliar (27,7 e 32,9 cm2) foi registrada quando as plantas foram fornecidas com Corteva XYZ para lisianthus e goivo, respectivamente. Os maiores teores de clorofila foram registrados (75,3 SPAD) em lisianthus, enquanto (81,6 SPAD) em goivo, quando pulverizado com Isabion e ácido húmico, respectivamente. Isabion consistentemente produziu os melhores resultados, indicando seu potencial como um bioestimulante eficaz para promover o crescimento, o rendimento e os atributos de qualidade, e pode ser usado pelos produtores para aumentar o rendimento e a qualidade de espécies de corte especiais e selecionadas.
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