QUALIDADE TECNOLÓGICA E RENDIMENTO DA CANA-DE- AÇÚCAR ADUBADA COM ORGANOMINERAL DE LODO DE ESGOTO E BIOESTIMULANTE

Abstract

Sugar cane (Saccharum spp.) Is of great importance in the national context, due to the production of ethanol and sugar, being products destined to the domestic and foreign market, making Brazil the largest producer in the world. The Central-South region stands out in the production of culture, with the states of São Paulo, Minas Gerais and Goiás corresponding to about 80% of the national production. It is of great importance to study the use of organomineral fertilizers. Studies with the use of these fertilizers generate expectations regarding efficiency, economy, and sustainability of fertilization. Disinfected sewage sludge (biosolids) is a solid residue resulting from processes of biological treatment of sewage and is one of the organomineral alternatives for the fertilization of crops of economic value, although there are few studies related to the use of sewage sludge in culture of sugarcane. Therefore, the objective of this work was to evaluate the technological quality and yield of sugar cane under organomineral fertilization with sewage sludge and biostimulant in high fertility soil. The experimental design was a randomized block design in a 5 x 2 +1 factorial scheme, with five treatments (0%, 60%, 80%, 100% and 120% use of organomineral) in the presence and absence of the biostimulant an additional (mineral fertilization) in four replicates. The experimental units consisted of 9 m wide x 10 m long, composed of six lines of sugar cane were spaced at 1.5 m. Biostimulating rooting was used. The variables evaluated were: purity, fiber, brix, ATR (Reduced Total Sugar), TPH (Tonnes per Hectare of stem), liters of ethanol, length, diameter and yield of sugarcane. It was verified that with the use of biostimulant increases the yield of stalks per hectare, that organomineral fertilizer based on biosolid is similar to the use of the mineral fertilizer. But the use of biostimulant and organomineral fertilizer based on sewage sludge are alternatives for the sustainable fertilization of the soil and the cycling of nutrients for the sugar cane crop.