Potencial produtivo das variedades RB’s de cana-de-açúcar no estado de Goiás
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2014-10-22
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Universidade Federal de Goiás
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The present research aimed to study the productivity of five sugarcane varieties, RB867515,
RB855453, RB92579, RB966928 e RB988082, by evaluating the tRTS.ha-1 (Recoverable Total
Sugar) in cane-plant over the months in some regions in the State of Goiás. The experiments
were conducted in 2011 in sugarcane agro-industries, located in the municipalities of
Goianésia, Aporé, Goiatuba, Santa Helena de Goiás, Mineiros and Rubiataba. Experiments
called maturation curve were conducted, composed of nine blocks each, containing some of
the five varieties studied randomly distributed in the study sites. The experimental plot
consisted of three rows of 6.0 m, spaced 1.5 m between them, and in each groove 18 gems
were planted per meter. Evaluations were performed at intervals of 30 days (on average)
totaling nine evaluations during the course of 497 days in 2012. Two types of sample were
made, one to measure the RTS through technological analysis, and another to measure TSH
(Tons of Sugar per Hectare) by weighing the total amount of production in the plot. It was
found that varieties have different agro-industrial productivity in relation to harvest season
and allocated environments. RB867515 variety shows tend to reach maximum productivity
between the months of July and September, averaging 17 t.ha-1 for RTS, and showed an
increase in productivity from April to July and decreased from September; RB966928 variety
reached maximum productivity between the months from august to October, with 15 t.ha-1
approximately of RTS in august and presented mean maturation. The cultivar RB855453
reached maximum RTS productivity approximate 19 t ha-1 in September, and his maturity
was mean. RB988082 variety showed mean maturation, resulting in increased RTS
productivity between July and September and reaching approximately 20 t.ha-1 in
September, the most productive variety when compared to the productivity of other varieties
evaluated in this period as well as the most responsive to environmental conditions of the
sites under study. RB92579 variety had the highest productivity from the month in July, it
was found that this variety showed medium/late maturing, according to the evaluated
medium, reaching maximum productivity from the month of July, and held it until the end the
harvest months.
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FREITAS, A. M. B. Potencial produtivo das variedades RB’s de cana-de-açúcar no estado de Goiás. 2014. 64 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2014.