Abstract
Cotton was grown alone (one plant/pot), in intraspecific competition (two plants/pot), and in interspecific competition with spurred anoda and velvetleaf in controlled-environment chambers, subjected to water stress by withholding water, and allowed to recover before the final harvest. Minimum leaf water potential reached during the drought period ranged from −1.87 MPa in cotton grown alone to −2.63 MPa in velvetleaf grown in intraspecific competition. Water stress reduced plant height, total dry weight, and leaf area in all species, compared to well-watered controls. Reductions in cotton growth due to intra- or interspecific competition were evident by 11 days following the onset of competition. The competitive impact of both weeds tended to increase with time. Growth reductions in cotton due to competition were associated primarily with reductions in leaf area duration; during drought the net assimilation rate also was reduced. Relative yields of cotton confirmed that interspecific competition from the weeds was more severe than intraspecific competition. Imposed drought did not affect the relative competitive abilities of the three species or the impact of the weeds on cotton.
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Claims 7
Claim · model-written summary
Water stress reduced plant height, total dry weight and leaf area in all species compared with well-watered controls.
- Taxon
- Cotton
Gossypium hirsutume0 - Treatment
- Water stresse1
- Outcome
- plant height, total dry weight, and leaf areae1
- Direction
- reducede1
- Comparator
- well-watered controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton was grown alone (one plant/pot), in intraspecific competition (two plants/pot), and in interspecific competition with spurred anoda and velvetleaf in controlled-environment chambers”
e1“Water stress reduced plant height, total dry weight, and leaf area in all species, compared to well-watered controls”
Claim · model-written summary
Intra- or interspecific competition reduced cotton growth from 11 days after competition began.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- intra- or interspecific competitione2
- Outcome
- growthe2
- Direction
- Reductionse2
- Comparator
- grown alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton was grown alone (one plant/pot), in intraspecific competition (two plants/pot), and in interspecific competition with spurred anoda and velvetleaf in controlled-environment chambers”
e2“Reductions in cotton growth due to intra- or interspecific competition were evident by 11 days following the onset of competition”
Claim · model-written summary
The competitive impact of the weeds on cotton tended to increase with time.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- competitione2
- Outcome
- competitive impacte3
- Direction
- increasee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Reductions in cotton growth due to intra- or interspecific competition were evident by 11 days following the onset of competition”
e3“The competitive impact of both weeds tended to increase with time”
Claim · model-written summary
Cotton growth reductions due to competition were associated primarily with reduced leaf area duration.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- competitione4
- Outcome
- leaf area duratione4
- Direction
- reductionse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Reductions in cotton growth due to intra- or interspecific competition were evident by 11 days following the onset of competition”
e4“Growth reductions in cotton due to competition were associated primarily with reductions in leaf area duration”
Claim · model-written summary
During drought the net assimilation rate of cotton was reduced.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- droughte5
- Outcome
- net assimilation ratee5
- Direction
- reducede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Reductions in cotton growth due to intra- or interspecific competition were evident by 11 days following the onset of competition”
e5“during drought the net assimilation rate also was reduced”
Claim · model-written summary
Interspecific competition from the weeds was more severe for cotton relative yield than intraspecific competition.
- Taxon
- cottonGossypium hirsutume6
- Treatment
- interspecific competition from the weedse6
- Outcome
- Relative yieldse6
- Direction
- more severee6
- Comparator
- intraspecific competitione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Relative yields of cotton confirmed that interspecific competition from the weeds was more severe than intraspecific competition”
Claim · model-written summary
Imposed drought did not affect the relative competitive abilities of the three species or the impact of the weeds on cotton.
- Taxon
- cottonGossypium hirsutume7
- Treatment
- Imposed droughte7
- Outcome
- relative competitive abilitiese7
- Direction
- did not affecte7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Imposed drought did not affect the relative competitive abilities of the three species or the impact of the weeds on cotton”
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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.