Abstract
ABSTRACT Sugarcane is considered as one of the prominent agricultural crops in Brazil, with Goiás being the second largest national producer. During the processing of sugarcane, waste is generated, and one of these is vinasse. The objective of this study was to evaluate the biometric and technological performances of two varieties of sugarcane for different depths and vinasse parceling. Experiments were conducted at Fazenda Boa Sorte, located in the municipality of Carmo do Rio Verde-GO. A randomized block design was used with a subdivided plot containing two varieties of sugarcane (RB 86-7515 and SP 80-1816) and each subplot having three management types for the application of vinasse (M1 20-20 mm, M2 40-0 mm, and M3 30-30 mm) and four repetitions. The applications were performed in the months of May and June (dry period). The variables analyzed were the plant height, number of photosynthetically active green leaves, stem diameter, leaf area, stalk productivity, soluble solids content, broth pol, apparent sucrose content, fiber content, total reducing sugars, and reducing sugars. Analysis of variance was performed on the results obtained using the F test; subsequently, for the significant data, the test of means was performed. The SP 80-1816 variety showed superiority for both the biometric and technological variables. The ethanol yield and total recoverable sugar content were higher for the SP 80-1816 variety, with no difference between the vinasse application management. The vinasse application installment did not show viability.
Highlights
IntroductionIn the current agricultural scenario, there is an expansion of the sugarcane cultivation areas in the national territory in Brazil, which shows the importance of this culture in the Brazilian economy
Sugarcane is considered as a plant with great production potential for dry mass and energy supplementation and stands out among other crops for its easy adaptation to Brazilian climates; it has become one of the most cultivated crops in Brazil (OLIVEIRA; BRAGA; SANTOS, 2015).In the current agricultural scenario, there is an expansion of the sugarcane cultivation areas in the national territory in Brazil, which shows the importance of this culture in the Brazilian economy
The analysis of the soil sample from the experimental area, which was removed from a layer at a depth of 0 to 25 cm before planting, presented the following chemical characteristics: pH 5.00 in CaCl2; 104.70 mg dm-3 of P; 326.50 mg dm-3 of K; 34.00 mg dm-3 of S; 1.80 cmolc dm-3 of Ca; 1.30 cmolc dm-3 of Mg; 0.0 cmolc dm-3 of Al; 7.20 cmolc dm-3 of cation exchange capacity (CEC); base saturation equal to 54.00%; 40.00 g dm-3 of organic matter; 0.99 mg dm-3 of Cu; 0.87 mg dm-3 of Zn; 0.20 mg dm-3 of B; 20.00 mg dm-3 of Fe; 6.51 mg dm-3 of Mn
Summary
In the current agricultural scenario, there is an expansion of the sugarcane cultivation areas in the national territory in Brazil, which shows the importance of this culture in the Brazilian economy. Factors such as the amount of water applied, irrigation management, soil type, climate, and variety must be taken into account (BAFFA; FREITAS; BRASIL, 2009). Among these characteristics, it is necessary to choose the variety that best adapts to the growing conditions; here, the RB 86-7515 and SP 80-1816 varieties are highlighted as the most cultivated in Brazil
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