Abstract
Agricultural by-products applied as soil amendments have the potential to improve crop production on low organic matter (OM) soils. This two-year study investigated the use of two readily available sugarcane (Saccharum spp.) milling by-products, mill mud, and mill ash, as soil amendments to improve first sugarcane crop (plant cane) and subsequent crop (first ratoon) grown on a sandy Spodosol. Sugarcane was grown in lysimeters receiving mill mud, mill ash, and a 50:50 (v:v) mill mud to mill ash mix. Amendments were applied at low, medium, and high application rates (5, 10, and 15 cm depths, respectively) and then incorporated 30 cm deep. Amendment effects on plant nutrition, soil characteristics, and crop yield were determined. High rate applied mill mud and mill ash had the highest soil OM content for both years and soil OM did not significantly change between crops for all treatments except for high rate mill mud, which increased the second year (ratoon crop). Leaf nutrient levels for nitrogen (N), iron (Fe), and copper (Cu) for all treatments both years were insufficient; nutrient levels for magnesium (Mg), manganese (Mn), and silicon (Si) were within marginal to sufficient range for all treatments both years. All amendments produced significantly higher biomass and sucrose yields for plant cane and first ratoon crops compared to the control. Mill ash treatments produced the greatest increase in sucrose and biomass yields from plant cane to ratoon crops, which corresponded with an increase in potassium (K) in leaf tissue. However, mid and high rates of mix produced the highest sugarcane biomass and sucrose yields for the both the plant cane and ratoon crops.
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 12
Claim · model-written summary
High rate mill mud and mill ash had the highest soil organic matter in both years.
- Taxon
- sugarcanet0
- Treatment
- High rate applied mill mud and mill ashe0
- Outcome
- soil OM contente0
- Direction
- higheste0
- Qualifier
- both yearse0
Not reportedComparator
Verbatim
e0“High rate applied mill mud and mill ash had the highest soil OM content for both years”
t0“sugarcane”
Claim · model-written summary
Soil organic matter did not significantly change between crops for most treatments.
Verbatim
e0“soil OM did not significantly change between crops for all treatments except for high rate mill mud”
t0“sugarcane”
Claim · model-written summary
High rate mill mud increased soil organic matter in the ratoon year.
Verbatim
e0“high rate mill mud, which increased the second year (ratoon crop)”
e1“soil OM did not significantly change between crops for all treatments except for high rate mill mud”
t0“sugarcane”
Claim · model-written summary
Leaf N, Fe and Cu were insufficient across treatments in both years.
- Taxon
- sugarcanet0
- Outcome
- Leaf nutrient levels for nitrogen (N), iron (Fe), and copper (Cu)e0
- Qualifier
- all treatments both yearse0
Not reportedDirection
Verbatim
e0“Leaf nutrient levels for nitrogen (N), iron (Fe), and copper (Cu) for all treatments both years were insufficient”
t0“sugarcane”
Claim · model-written summary
Leaf Mg, Mn and Si were marginal to sufficient across treatments in both years.
- Taxon
- sugarcanet0
- Outcome
- nutrient levels for magnesium (Mg), manganese (Mn), and silicon (Si)e0
- Qualifier
- all treatments both yearse0
Not reportedDirection
Verbatim
e0“nutrient levels for magnesium (Mg), manganese (Mn), and silicon (Si) were within marginal to sufficient range for all treatments both years”
t0“sugarcane”
Claim · model-written summary
All amendments increased biomass relative to control for plant cane and first ratoon.
Verbatim
e0“All amendments produced significantly higher biomass and sucrose yields for plant cane and first ratoon crops compared to the control”
t0“sugarcane”
Claim · model-written summary
All amendments increased sucrose yield relative to control for plant cane and first ratoon.
Verbatim
e0“All amendments produced significantly higher biomass and sucrose yields for plant cane and first ratoon crops compared to the control”
t0“sugarcane”
Claim · model-written summary
Mill ash produced the largest plant-cane-to-ratoon increase in sucrose yield.
Verbatim
e0“Mill ash treatments produced the greatest increase in sucrose and biomass yields from plant cane to ratoon crops”
t0“sugarcane”
Claim · model-written summary
Mill ash produced the largest plant-cane-to-ratoon increase in biomass yield.
Verbatim
e0“Mill ash treatments produced the greatest increase in sucrose and biomass yields from plant cane to ratoon crops”
t0“sugarcane”
Claim · model-written summary
The mill-ash-associated yield increase corresponded to more leaf potassium.
Verbatim
e0“which corresponded with an increase in potassium (K) in leaf tissue”
e1“Mill ash treatments produced the greatest increase in sucrose and biomass yields from plant cane to ratoon crops”
t0“sugarcane”
Claim · model-written summary
Mid and high mix rates gave the highest biomass yields in both crops.
- Taxon
- sugarcanee0
- Organ / stage
- plant cane and ratoon cropse0
- Treatment
- mid and high rates of mixe0
- Outcome
- biomasse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“mid and high rates of mix produced the highest sugarcane biomass and sucrose yields for the both the plant cane and ratoon crops”
Claim · model-written summary
Mid and high mix rates gave the highest sucrose yields in both crops.
- Taxon
- sugarcanee0
- Organ / stage
- plant cane and ratoon cropse0
- Treatment
- mid and high rates of mixe0
- Outcome
- sucrose yieldse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“mid and high rates of mix produced the highest sugarcane biomass and sucrose yields for the both the plant cane and ratoon crops”
The same questions in other papers
other · yield · Saccharum officinarum (sugarcane)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
14 papers more in this group
See all 18 papers →other · growth · Saccharum officinarum (sugarcane)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 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.