Abstract
Using chemical ripeners in the sugarcane favors the increase of sucrose productivity, regulates the effects of adverse weather conditions for ripening, and promotes the anticipation of harvest. However, it can also modify the nutrient absorption, translocation, and accumulation process and, consequently, affect the nutrient cycling of the straw maintained on the soil surface. Thus, this research aimed to evaluate ripeners’ effects (glyphosate − 0.5 L ha−1; sulfometuron-methyl − 0.02 kg ha−1, and trinexapac-ethyl − 0.8 L ha−1) on the nutritional status of the sugarcane leaf canopy. Natural ripening maintained the highest levels of P and Zn throughout the time. The highest levels of N, P, and K were provided by trinexapac-ethyl in most of the evaluated periods, as well as contributing to the highest levels of Ca, Mg, and S, along with sulfometuron methyl, from 30 to 60 days after application (DAA). The highest levels of B and Zn were observed under sulfometuron methyl. On the other hand, glyphosate was the ripener responsible for the lowest nutrient concentrations in the leaf canopy, including N, Ca, Mg, and S at 45 DAA and B and Mn at 30 and 45 DAA. Considering the importance of maintaining the straw for nutrient cycling, in addition to being a ripener, trinexapac-ethyl contributed to the maintenance of high levels of nutrients in the leaf canopy in relation to the other ripeners, which suggests a greater possibility of availability of these nutrients for the ratoon development in the upcoming cycles.
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Claims 8
Claim · model-written summary
Natural ripening maintained the highest P and Zn levels throughout the study.
- Taxon
- sugarcanet0
- Organ / stage
- leavest0
- Treatment
- Natural ripeninge0
- Outcome
- levels of P and Zne0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“Natural ripening maintained the highest levels of P and Zn throughout the time”
t0“sugarcane leaves”
Claim · model-written summary
Trinexapac-ethyl produced the highest N, P and K levels in most evaluated periods.
- Taxon
- sugarcanet0
- Treatment
- trinexapac-ethyle0
- Outcome
- levels of N, P, and Ke0
- Direction
- higheste0
- Qualifier
- most of the evaluated periodse0
Not reportedComparator
Verbatim
e0“The highest levels of N, P, and K were provided by trinexapac-ethyl in most of the evaluated periods”
t0“sugarcane leaves”
Claim · model-written summary
Trinexapac-ethyl contributed to highest Ca, Mg and S levels from 30 to 60 days.
- Taxon
- sugarcanet0
- Treatment
- trinexapac-ethylt1
- Outcome
- levels of Ca, Mg, and Se0
- Direction
- higheste0
- Qualifier
- from 30 to 60 days after application (DAA)e0
Not reportedComparator
Verbatim
e0“contributing to the highest levels of Ca, Mg, and S, along with sulfometuron methyl, from 30 to 60 days after application (DAA)”
t0“sugarcane leaves”
t1“trinexapac-ethyl in most of the evaluated periods”
Claim · model-written summary
Sulfometuron methyl contributed to highest Ca, Mg and S levels from 30 to 60 days.
- Taxon
- sugarcanet0
- Treatment
- sulfometuron methyle0
- Outcome
- levels of Ca, Mg, and Se0
- Direction
- higheste0
- Qualifier
- from 30 to 60 days after application (DAA)e0
Not reportedComparator
Verbatim
e0“highest levels of Ca, Mg, and S, along with sulfometuron methyl, from 30 to 60 days after application (DAA)”
t0“sugarcane leaves”
Claim · model-written summary
Sulfometuron methyl yielded the highest B and Zn levels.
Not reportedComparator
Verbatim
e0“The highest levels of B and Zn were observed under sulfometuron methyl”
t0“sugarcane leaves”
Claim · model-written summary
Glyphosate gave the lowest N, Ca, Mg and S concentrations at 45 days.
- Taxon
- sugarcanet0
- Treatment
- glyphosatee0
- Outcome
- nutrient concentrations in the leaf canopy, including N, Ca, Mg, and Se0
- Direction
- loweste0
- Qualifier
- at 45 DAAe0
Not reportedComparator
Verbatim
e0“glyphosate was the ripener responsible for the lowest nutrient concentrations in the leaf canopy, including N, Ca, Mg, and S at 45 DAA”
t0“sugarcane leaves”
Claim · model-written summary
Glyphosate gave the lowest B and Mn concentrations at 30 and 45 days.
Not reportedComparator
Verbatim
e0“lowest nutrient concentrations in the leaf canopy, including N, Ca, Mg, and S at 45 DAA and B and Mn at 30 and 45 DAA”
t0“sugarcane leaves”
t1“glyphosate was the ripener responsible”
Claim · model-written summary
Trinexapac-ethyl maintained high leaf nutrients relative to other ripeners and may aid ratoon development.
Verbatim
e0“trinexapac-ethyl contributed to the maintenance of high levels of nutrients in the leaf canopy in relation to the other ripeners, which suggests a greater possibility of availability of these nutrients for the ratoon development in the upcoming cycles”
t0“sugarcane leaves”
The same questions in other papers
glyphosate · growth · Saccharum officinarum (sugarcane)Results differ
2 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →glyphosate · nutrient: content · Saccharum officinarum (sugarcane)Positive and negative results
2 in the opposite direction
- positive
- positive
stage · nutrient: content · Saccharum officinarum (sugarcane)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.