Growth Regulator on Rooting and Development of Cucumber Seedlings (Cucumis sativus)

The use of growth regulators is a practice that can stimulate the growth and development of plants, acting on differentiation and cell elongation.Products with this purpose are sold for application by air and seed treatment.This work aimed at evaluating the growth response of cucumber seedlings to the application of different doses of the Stimulate® growth regulator.The experiment was carried out at UNISEP -União de Ensino do Sudoeste do Paraná, DoisVizinhos, in the state of Paraná, Brazil, in protected cultivation.The experiment was conducted in a randomized block design with four replications where five doses of growth regulator: 0.00; 0.25; 0.50; 0.75; and 1.00 L-1 were evaluated.The seeds were sown in expanded polystyrene trays with 200 cells containing commercial substrate, which were later accommodated in protected cultivation.Seedling height, root system length, fresh weight of shoot and root system were evaluated.It was observed that the 0.00 and 0.75 L-1 doses caused significant effects on the development of air and root part, the doses 0.50 and 1.00 L-1, had positive effects on the development of seedlings.