Título: Growth analysis, nitrogen accumulation, and yield of sugarcane varieties for the pre - amazon region of Brazil
Autor(es): SHIGAKI, Francirose; LIRA, Thiago Pontes; FREITAS, José Roberto Brito; COSTA, Mayanna Karlla Lima; VERAS, Ludhanna Marinho; RODRIGUES, Rosane Cláudia; ARAUJO, Elisangela Sousa de
Resumo: The great expansion of sugar cane production to non
-
traditional regions
in Brazil
has demonstrated
the
importance of
knowledge
on the
growth
characteristics to maintain the productivity and sustainability
of the sector. Among the alternatives available to evaluate different varieties of sugar cane
, the growth
analysis has been
one of the most used tools
. The objective of this study was to evaluate the growth
and development of three varieties of sugar cane for the Pre
-
Amazon region of Brazil. The varieties
used were RB 867515, RB 863129 and RB 92579, and the following parameters of growth
were
evaluated
:
accumulation of biomass on the part area,
leaf area
, number of plants, height of stems
,
the
nitrogen
content in different parts of the plant (
stem and leaf
+3
), brix and productivity.
For that,
samples
were collected
at 60, 120, 180, 240 and 300
days after
planting. For all collecting dates
and at 300 days
after planting
the variety RB 863129 presented better results (P<0.05) for
plant height, ste
m dry weight,
N content in leaf
+3
and final yield
compared to the
varieties
RB92579 and RB 867515
.
There was no
difference for
number of plants (P>0.05) for the varieties RB 863129 and RB 92579
.
L
eaf are
a
was
greater (P<0.05) fo
r the variety RB 867515; and
nitrogen content of stems were greater for the variety
RB 92579 at 300 days after planting. Overall
,
the RB 86
3129 variety was the most promising for
cultivation in this region during the sugarcane
-
plant season.
↧