Development of Pre-Broken Sugar Cane Submitted to Treatments with Fertilizer and Vegetable Regulators

Abstract

The objective of this work was to evaluate the development of pre-budded sugarcane seedlings from buds submitted to treatments with fertilizer and plant regulators. The experiment was conducted in a completely randomized design with six replicates. The treatments of the yolks were carried out in the concentration of 1% of volume with the following products: Witness-without treatment of the gems; Kinetin 0.009% + Gibberellic acid 0.005% + 4-Indole-3-butyric acid 0.005% (Stimulate ®); Seaweed Extract (Ascophyllum nodosum) and Potassium Hydroxide-3.5% K 2 O (ExpertGrow ®) and ethephon 72% (Ethrel ®) + pH Reducer (Kill ®). The percentage of shoot buds, number of tillers, number of leaves, leaf area, stem diameter, shoot dry mass, root and total were evaluated. The control, as well as Stimulate ® and Ethrel ® provided higher sprouting percentages. Ethrel ® was the product that promoted the highest number of tillers and leaves. The leaf area did not change due to the use of the products or not. The dry mass of both shoot, root and total leaves showed no significant weight changes among the evaluated treatments. It is concluded that the use of ExpertGrow ® is not recommended for treatment of pre-sprouted sugarcane seedlings because it provided fewer shoots at 28 days after planting of the yolk and that Ethrel ® is recommended because it provided a larger number of the buds evaluated.