Efeito de tensões de água no solo na qualidade e longevidade floral do crisântemo de corte

• Autor(a) principal: Farias, Marizélia Furtado de
• Data de Publicação: 2010
• Outros Autores: Saad, João Carlos Cury [UNESP], Carnietto, Mirela [UNESP], Laschi, Denise [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.5777/paet.v2i1.441; http://hdl.handle.net/11449/140769
• topic: Dendranthema grandiflorum Ramat; Kitamura; Post-harvest; Irrigation; Dendranthema grandioflorum Ramat; Kitamura; Pós cocecha; Irrigación; Dendranthema grandiflorum Ramat; Kitamura; Pós-colheita; Irrigação

The experiment was carried out on the Steltenpool property, in the Holambra II District of the Paranapanema (SP) municipality. e research principal objective was to identify the soil water tension which would result in improved quality and greater longevity for cut chrysanthemums, Dark Orange Reagan cultivar. e treatments were de"ned for ten tension levels: 5, 10, 15, 20, 25, 30, 35, 40, 45 and 50 kPa. In the last evaluation, when the chrysanthemums were showing open +owers, some plants were taken to the FCA/UNESP Department of Horticulture laboratory and submitted to two treatments to maintain longevity. e treatments were: T1, treatment with distilled water; T2, treatment with distilled water + gibberellic acid (GA3 30 mg.L- 1 ). Daily analyses with speci"c formulae were realized, with notes attributed to each plant. ree repetitions for each tension treatment were used, with 30 stems for T1 and 30 for T2, totaling 60 stems. e stems were conditioned in pet bottles "lled with 500 mL of water. e notes were given according to the following criteria: (1) generalized yellowing, soften stems, advanced wilting and discard; (2) onset of yellowing and wilting; (3) onset of falling leaves; (4) some wilted leaves; (5) normal green in+orescent turgid leaves (best quality). e conclusions drawn from the results obtained were that a greater number of A1 packets, of the best quality standard, were found with tensions of 20 and 50 kPa and that greater longevity was achieved using gibberellin (GA3 ) at a concentration of 30 mg.L-1, at tensions of 30 and 50 kPa.