Abstract
Allelopathy, the chemical interaction between plants, may result in the inhibition of plant growth and development, which can include compounds released from a crop that adversely impact weed species. The objective of this research was to determine the allelopathic impact of sugarcane (Saccharum officinarum) field residue and root water extracts on seed germination of three weed species. Red morningglory (Ipomoea coccinea L.), redroot pigweed (Amaranthus retroflexus L.), and spiny amaranth (Amaranthus spinosus L.)] seeds were treated with five extract concentrations (0, 12.5, 25, 50, and 100 g/L) from either sugarcane field residue or sugarcane root extracts. The field residue and roots were from sugarcane variety ‘HoCP 96-540’ plant cane. Germination generally decreased with increasing sugarcane field residue extract concentrations in the three weed species tested. At the highest residue concentration (100 g/L), red morningglory, redroot pigweed, and spiny amaranth germination decreased by 29%, 17.5% and 80.5%, respectively. Germination generally decreased with increasing sugarcane root extract concentrations in red morningglory and redroot pigweed, but not with spiny amaranth. The highest root concentration (100 g/L) decreased red morningglory and redroot pigweed germination by 19.5% and 18.5%, respectively. This research provides the first bioassay demonstrating that sugarcane root extracts have allelopathic activity, and specifically in respect to red morningglory and redroot pigweed germination. Future research should investigate the allelopathic compounds present in the sugarcane field residue and roots, determine if the same allelopathic compounds are present and in similar concentrations among other sugarcane varieties, and further examine which weed species may be susceptible to the allelopathic compounds present in sugarcane roots.
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Claims 7
Claim · model-written summary
Germination of the three weed species decreased with increasing sugarcane field residue extract concentrations.
- Taxon
- Sugarcanet0
- Treatment
- sugarcane field residue extracte1
- Interactor
- weed speciese1weed
- Outcome
- Germinatione1
- Direction
- decreasede1
Not reportedComparator
Verbatim
e1“Germination generally decreased with increasing sugarcane field residue extract concentrations in the three weed species tested”
t0“Sugarcane Field Residue”
Claim · model-written summary
At 100 g/L, sugarcane field residue extract decreased red morningglory germination by 29%.
- Taxon
- Sugarcanet0
- Treatment
- highest residue concentration (100 g/L)e2
- Interactor
- red morningglory
Ipomoea coccineae2weed - Outcome
- germinatione2
- Direction
- decreasede2
- Value
- 29%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“At the highest residue concentration (100 g/L), red morningglory, redroot pigweed, and spiny amaranth germination decreased by 29%, 17.5% and 80.5%, respectively”
t0“Sugarcane Field Residue”
Claim · model-written summary
At 100 g/L, sugarcane field residue extract decreased redroot pigweed germination by 17.5%.
- Taxon
- Sugarcanet0
- Treatment
- highest residue concentration (100 g/L)e2
- Interactor
- redroot pigweede2weed
- Outcome
- germinatione2
- Direction
- decreasede2
- Value
- 17.5%e2
Not reportedComparator
Verbatim
e2“At the highest residue concentration (100 g/L), red morningglory, redroot pigweed, and spiny amaranth germination decreased by 29%, 17.5% and 80.5%, respectively”
t0“Sugarcane Field Residue”
Claim · model-written summary
At 100 g/L, sugarcane field residue extract decreased spiny amaranth germination by 80.5%.
- Taxon
- Sugarcanet0
- Treatment
- highest residue concentration (100 g/L)e2
- Interactor
- spiny amaranthe2weed
- Outcome
- germinatione2
- Direction
- decreasede2
- Value
- 80.5%e2
Not reportedComparator
Verbatim
e2“At the highest residue concentration (100 g/L), red morningglory, redroot pigweed, and spiny amaranth germination decreased by 29%, 17.5% and 80.5%, respectively”
t0“Sugarcane Field Residue”
Claim · model-written summary
Germination decreased with increasing sugarcane root extract concentrations in red morningglory and redroot pigweed, but not in spiny amaranth.
- Taxon
- Sugarcanet0
- Treatment
- sugarcane root extracte3
- Interactor
- red morninggloryIpomoea coccineae3weed
- Second interactor
- redroot pigweede3weed
- Outcome
- Germinatione3
- Direction
- decreasede3
- Qualifier
- but not with spiny amaranthe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Germination generally decreased with increasing sugarcane root extract concentrations in red morningglory and redroot pigweed, but not with spiny amaranth”
t0“Sugarcane Field Residue”
Claim · model-written summary
The highest sugarcane root extract concentration (100 g/L) decreased red morningglory germination by 19.5%.
- Taxon
- Sugarcanet0
- Treatment
- highest root concentration (100 g/L)e4
- Interactor
- red morninggloryIpomoea coccineae4weed
- Outcome
- germinatione4
- Direction
- decreasede4
- Value
- 19.5%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest root concentration (100 g/L) decreased red morningglory and redroot pigweed germination by 19.5% and 18.5%, respectively”
t0“Sugarcane Field Residue”
Claim · model-written summary
The highest sugarcane root extract concentration (100 g/L) decreased redroot pigweed germination by 18.5%.
- Taxon
- Sugarcanet0
- Treatment
- highest root concentration (100 g/L)e4
- Interactor
- redroot pigweede4weed
- Outcome
- germinatione4
- Direction
- decreasede4
- Value
- 18.5%e4
Not reportedComparator
Verbatim
e4“The highest root concentration (100 g/L) decreased red morningglory and redroot pigweed germination by 19.5% and 18.5%, respectively”
t0“Sugarcane Field Residue”
The same questions in other papers
botanical · growth · Saccharum officinarum (sugarcane)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
2 papers more in this group
See all 6 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.