Abstract
In Brazil, liquid residues (vinasse) from ethanol production are commonly used as fertigation for sugarcane cultivation. The objectives of this study were to evaluate the effect of vinasse application on sugarcane root density and rooting depth. A 2-year field experiment was conducted using three vinasse fertigation treatments, with 3 replications, as follows: Year 1 - control (no vinasse, dose 0), 140 m3 vinasse per ha (dose 1), and 280 m3 per ha (dose 2) and Year 2 - control, 170 m3 per ha (dose 1), and 340 m3 per ha (dose 2). After 12 months of vinasse application, soil trenches (1.5 m depth by 1.2 m wide) were opened within the sugarcane row to evaluate the root system. A metal grid, (1.5 m × 1.2 m) was fitted in the trenches and root number and density (cm of roots per cm3 of soil) were evaluated and a root system model for each treatment was obtained. Following the sugarcane harvest, vinasse fertigations were continued for the second crop cycle, followed by another root growth evaluation. Since vinasse is a nutrient-containing organic residue, enhanced soil fertility from the vinasse applications influenced root growth and rooting depth, particularly within the soil surface layer. Although a few roots were found below 0.6 m depth, most of the increased root growth with vinasse application was found within the surface 0.3 m soil profile. Relative to the control, root density with dose 2 vinasse fertigation increased by 34% (top 0.1 m soil layer), 122% (0.1 to 0.2 m), and 36% (0.2 to 0.3 m). Year 2 results were similar, with dose 2 fertigation resulting in 128% greater root densities in the 0.2 to 0.3 m soil profile relative to the control. We also found linear correlations between base saturation with soil depth and root number and density. These results indicate that successive fertigations with vinasse promote soil fertility improvements and consequently large and deep root systems.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Vinasse applications enhanced sugarcane root growth and rooting depth, especially near the soil surface.
- Taxon
- sugarcanee1
- Treatment
- vinasse applicationse0
- Outcome
- root growth and rooting depthe0
- Direction
- enhancede0
- Qualifier
- within the soil surface layere0
Not reportedComparator
Verbatim
e0“enhanced soil fertility from the vinasse applications influenced root growth and rooting depth, particularly within the soil surface layer”
e1“sugarcane root density and rooting depth”
Claim · model-written summary
Most vinasse stimulated sugarcane root growth was in the surface 0.3 m, with few roots below 0.6 m.
Verbatim
e0“Although a few roots were found below 0.6 m depth, most of the increased root growth with vinasse application was found within the surface 0.3 m soil profile”
e1“sugarcane root density and rooting depth”
Claim · model-written summary
Dose 2 vinasse increased sugarcane root density by 34% in the top 0.1 m relative to control.
Verbatim
e0“Relative to the control, root density with dose 2 vinasse fertigation increased by 34% (top 0.1 m soil layer), 122% (0.1 to 0.2 m), and 36% (0.2 to 0.3 m)”
e1“sugarcane root density and rooting depth”
Claim · model-written summary
Dose 2 vinasse increased sugarcane root density by 122% at 0.1 to 0.2 m relative to control.
Verbatim
e0“Relative to the control, root density with dose 2 vinasse fertigation increased by 34% (top 0.1 m soil layer), 122% (0.1 to 0.2 m), and 36% (0.2 to 0.3 m)”
e1“sugarcane root density and rooting depth”
Claim · model-written summary
Dose 2 vinasse increased sugarcane root density by 36% at 0.2 to 0.3 m relative to control.
Verbatim
e0“Relative to the control, root density with dose 2 vinasse fertigation increased by 34% (top 0.1 m soil layer), 122% (0.1 to 0.2 m), and 36% (0.2 to 0.3 m)”
e1“sugarcane root density and rooting depth”
Claim · model-written summary
In year 2, dose 2 vinasse gave 128% greater sugarcane root density at 0.2 to 0.3 m than control.
Verbatim
e0“Year 2 results were similar, with dose 2 fertigation resulting in 128% greater root densities in the 0.2 to 0.3 m soil profile relative to the control”
e1“sugarcane root density and rooting depth”
Claim · model-written summary
Base saturation with depth correlated linearly with sugarcane root number and density.
Not reportedDirection
Verbatim
e0“We also found linear correlations between base saturation with soil depth and root number and density”
e1“sugarcane root density and rooting depth”
Claim · model-written summary
Successive vinasse fertigations are interpreted to improve soil fertility and promote large, deep sugarcane root systems.
- Taxon
- sugarcanee1
- Treatment
- successive fertigations with vinassee0
- Outcome
- large and deep root systemse0
- Qualifier
- soil fertility improvementse0
Not reportedDirection
Verbatim
e0“These results indicate that successive fertigations with vinasse promote soil fertility improvements and consequently large and deep root systems”
e1“sugarcane root density and rooting depth”
The same questions in other papers
fertilization · growth · Saccharum officinarum (sugarcane)Positive and negative results
128 papers in the same direction as this paper · 14 in the opposite direction · 4 reporting no difference from an alternative
- negative
- negative
- no effect
143 papers more in this group
See all 147 papers →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.