Abstract
One of the main by-products of the sugar and alcohol industry is the vinasse which is rich in nutrients, especially potassium. The objective of this study was to evaluate the quality of the technological characteristics and productivity of sugarcane after application of vinasse doses in the third cut cane. The study was conducted in Rhodic Hapludox sandy clay soil, in Monte Verde plant - Bunge in county Ponta Pora, MS. A randomized block design was used, four vinasse doses (0, 450, 600 and 750 m3 ha-1) with five repetitions were evaluated. sugarcane variety RB 855453 early cycle was used, with line spacing of 1.5 m. The planting of cane occurred in 2008, using conventional tillage. The POL% increased 3.38%, for the °BRIX%, there was an increase of 5.03%, the AR% increased 22%, for the variable FIBER%, there was a 6.7% e the ATR% increased 4.94%, with vinasse doses. For productivity, there was an increase of 4 Mg from the lowest to the highest dose of vinasse. The application of vinasse doses improved the quality of the raw material, except for industry purity. The vinasse doses increased the productivity of sugarcane.
Highlights
One of the main by-products of the sugar and alcohol industry is the vinasse which is rich in nutrients, especially potassium
Foram testados e escolhidos os modelos que os componentes da equação foram significativos a 5% de probabilidade e o maior coeficiente de determinação
Values of F, error (QM) and coefficient of variation (CV%) of the average of the technological parameters obtained in sugarcane ratoon cycle of the third year after application of vinasse doses
Summary
O trabalho foi realizado em campo, em área comercial da Usina Monte Verde (BUNGE – S/A), no município de Ponta Porã, MS, entre dezembro de 2010 e agosto de 2011. Durante o período de realização do experimento a precipitação total foi de 1059 mm (Figura 1). O solo da área experimental foi classificado como Latossolo Vermelho distroférrico, de textura franco argilo arenoso, com 540 g kg-1 de areia, 360 g kg-1 de argila e 100 g kg-1 de silte. O delineamento experimental utilizado foi em blocos casualizados, com quatro doses de vinhaça (0; 450; 600 e 750 m3 ha-1) e com cinco repetições, totalizando 20 unidades experimentais. Para se definir as doses de vinhaça aplicadas no solo, utilizou-se a fórmula proposta pela companhia de tecnologia de saneamento ambiental, CETESB (2015), com uso da concentração média de K na vinhaça. Precipitação pluviométrica total na área experimental, no período de condução do experimento, entre dezembro de 2010 e fevereiro de 2011.
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