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% K2O (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.
Highlights
Sugarcane (Saccharum officinarum L.) stands out in the Brazilian agribusiness with the production of sugar, ethanol and bioenergy, accounting for more than half of the sugar sold in the world
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
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
Summary
Sugarcane (Saccharum officinarum L.) stands out in the Brazilian agribusiness with the production of sugar, ethanol and bioenergy, accounting for more than half of the sugar sold in the world. The system of production of pre-budded seedlings (MPB) emerged as an excellent option for the resumption of nursery formation, since it allows reducing the time for the use of sugarcane, facilitates the adoption of new varieties with greater potential, ensures more uniform planting and provides greater plant health [3]. The system allows the reduction of the volume of stalks per hectare, the increase of the multiplication rate, the use of a smaller volume of material in the field and increase in the operability of the planting [4]. Conventional planting uses an average of 18 to 20 tons of stems per hectare, and in the MPB system this volume falls to 2 tons on average means that 18 tons of stalk per hectare can be used by industry to produce sugar and ethanol
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