English

Costa De Oliveira Daniele,Santos Gomes Da Silva Vinicius,Gomes Pereira Manoel,Terezinha Terezinha,Claudia De Araujo Gomes Tamara,Wagner De Oliveira Mauro

doi:10.5897/ajar2016.11789

Abstract

This paper evaluated the stalk productivity and quality of the RB961552 and RB98710 sugarcane varieties, compared with RB92579, during the cane-plant and regrowth cycles. The study was conducted in a random block experimental design with five repetitions. The plots composed of 7 furrows measuring 8 m in length with 1.0 m spacing. Juice quality from the lower, middle, and upper thirds of the industrialized stalks was evaluated at the beginning, in the middle, and at the end of the harvest. At the end of the harvest, industrialized stalk and sugar productivity was also quantified. In all the evaluation periods, RB961552 had a lower apparent sucrose level than the other two varieties. RB92579 and RB98710 only differed in the collections at the beginning of the harvest and in the first regrowth cycle, at which time RB98710 presented a higher sucrose level. RB92579 sugar production in the cane-plant and first regrowth cycles was 14.37 and 18.44%, respectively, and greater than the average for the RB961552 and RB98710 varieties. Key words: Phosphorus in sugarcane juice, sucrose, production systalk, industrial quality.

Highlights

The sugar-alcohol sector in Brazil is one of the most technology intensive in the world
This paper evaluated the stalk productivity and quality of the RB961552 and RB98710 sugarcane varieties, compared with RB92579, during the cane-plant and regrowth cycles
There was a significant difference in fiber between the stalk thirds and the harvesting periods, while PUR was only affected by the stalk third (Table 2)

Summary

Introduction

The sugar-alcohol sector in Brazil is one of the most technology intensive in the world. This is the result of research, with technological improvement programs developed in the country over decades making new varieties available with high productive potential. There have been great advances in knowledge of soils and plant nutrition, in cultivation practices, production management, and cane payment for juice quality de Oliveira et al. The adoption of improved varieties has contributed to an increase in cane productivity and crop profitability (Souza et al, 2012; Silva, 2013). Among these new varieties, RB92579, RB98710, and RB961552 stand out. RB961552 is highly productive and responds excellently to irrigation (RIDESA, 2010)

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