Paper · 2021 · Australian Journal of Crop Science

Responses of different varieties of sugarcane to irrigation levels in the Cerrado

Elson de Jesus Antunes Júnior; José Alves Júnior; Carolina Carvalho Rocha Sena; et al.

8
claims
11
verbatim quotes
7
citations
3
research areas
✓
Open access

Abstract

The Cerrado is under full expansion of sugarcane cultivation. However, the climate of this biome limits the production of sugarcane due to a marked water deficit. Therefore, the objective of this study is to evaluate different varieties of sugarcane in two cultivation cycles in response to irrigation levels in the Cerrado. The experiment was conducted in Goiânia-GO, Brazil, from March 2016 to March 2018, during the cycles of plant-cane and ratoon cane in pots. The experiment was completely randomized in a 5 x 6 factorial design. The treatments were five varieties of sugarcane (RB867515, CTC11, SP860042, IAC873396, and IAC911099) and six levels of supplementary irrigation (100, 80, 60, 40, 20 and 0% of the ETc determined by weighing lysimeter), and four replications. Eight biometric analyses were performed 45 days apart. At the end of each cycle, the quality of the raw material was determined through technological analysis. At the initial development phase (between March and August), when growth is low, we found that it is better to use an irrigation level that provides at least 40% of ETc, since the Cerrado environment does not increase sugarcane height. At the growth phase (between September and March), there is active growth corresponding to 74% of the cane's height. Therefore, the ideal irrigation is that at least 80% of the ETc be provided at the growth stage to support the sugarcane to reach a maximum growth and consequently favorable technological indexes. The supplementary irrigation level of 60% of ETc accelearted the process of maturation of sugarcane for a 12-month cycle. We conclude that the level of supplementary irrigation using greater technical viability for the cultivation of sugarcane in the Cerrado is 60% of the ETc. The varieties most adapted to this production environment are RB867515 and IAC873396

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Claims 8

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Early development growth was low, and irrigation of at least 40% ETc was advised.

Taxon
sugarcanee0
Outcome
better to use an irrigation level that provides at least 40% of ETce0
Setting
Cerradoe0

Verbatim

e0

“At the initial development phase (between March and August), when growth is low, we found that it is better to use an irrigation level that provides at least 40% of ETc, since the Cerrado environment does not increase sugarcane height”

✓ located verbatim in the source · abstract, characters 937–1171 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

The Cerrado environment did not increase sugarcane height early in development.

Taxon
sugarcanee0
Outcome
sugarcane heighte0
Direction
does not increasee0
Setting
Cerradoe0

Verbatim

e0

“the Cerrado environment does not increase sugarcane height”

✓ located verbatim in the source · abstract, characters 1113–1171 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The growth phase accounted for 74% of cane height.

Taxon
sugarcanee1
Organ / stage
growth phasee0
Outcome
cane's heighte0
Value
74%e0

Verbatim

e0

“At the growth phase (between September and March), there is active growth corresponding to 74% of the cane's height”

✓ located verbatim in the source · abstract, characters 1173–1288 · show in text ↑
e1

“varieties of sugarcane to irrigation levels”

✓ located verbatim in the source · title, characters 23–66 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

At least 80% ETc was recommended during growth for maximum growth and favorable technological indexes.

Taxon
sugarcanee0
Outcome
at least 80% of the ETc be provided at the growth stagee0

Verbatim

e0

“the ideal irrigation is that at least 80% of the ETc be provided at the growth stage to support the sugarcane to reach a maximum growth and consequently favorable technological indexes”

✓ located verbatim in the source · abstract, characters 1301–1485 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Supplementary irrigation at 60% ETc accelerated maturation over a 12-month cycle.

Taxon
sugarcanee0
Treatment
supplementary irrigation level of 60% of ETce0
Outcome
process of maturatione0
Direction
acceleartede0
Qualifier
12-month cyclee0

Not reportedComparator

Verbatim

e0

“The supplementary irrigation level of 60% of ETc accelearted the process of maturation of sugarcane for a 12-month cycle”

✓ located verbatim in the source · abstract, characters 1487–1607 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors concluded that 60% ETc was technically most viable in the Cerrado.

Taxon
sugarcanee0
Outcome
60% of the ETce0
Setting
Cerradoe0

Verbatim

e0

“the level of supplementary irrigation using greater technical viability for the cultivation of sugarcane in the Cerrado is 60% of the ETc”

✓ located verbatim in the source · abstract, characters 1626–1763 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

RB867515 was among the varieties most adapted to the production environment.

Taxon
sugarcanee1
Material
RB867515e0
Outcome
most adaptede0

Verbatim

e0

“The varieties most adapted to this production environment are RB867515 and IAC873396”

✓ located verbatim in the source · abstract, characters 1765–1849 · show in text ↑
e1

“varieties of sugarcane to irrigation levels”

✓ located verbatim in the source · title, characters 23–66 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

IAC873396 was among the varieties most adapted to the production environment.

Taxon
sugarcanee1
Material
IAC873396e0
Outcome
most adaptede0

Verbatim

e0

“The varieties most adapted to this production environment are RB867515 and IAC873396”

✓ located verbatim in the source · abstract, characters 1765–1849 · show in text ↑
e1

“varieties of sugarcane to irrigation levels”

✓ located verbatim in the source · title, characters 23–66 · show in text ↑

irrigation · phenology · Saccharum officinarum (sugarcane)Results agree

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