Abstract
Studies were conducted to determine the effect of interference between ladysthumb and cotton on plant growth and productivity. Ladysthumb remained shorter than cotton until at least 70 d after cotton planting. However, ladysthumb grew over twice as tall as cotton and, depending on plant density, produced between 179 and 681 g dry biomass per plant by cotton harvest. Ladysthumb biomass per plant was not affected by weed density when grown with cotton. When grown alone, ladysthumb produced over 2,000 g dry biomass per plant, which was over four times greater than biomass produced by plants grown with cotton. Cotton lint yield decreased between 0.7 and 0.9 kg ha−1 with each gram increase in weed dry biomass per meter of the row. The relationship between ladysthumb density and cotton percent yield loss was described by the rectangular hyperbola model with the asymptote (coefficient a) constrained to 100% maximum yield loss. The estimated coefficient i (yield loss per unit density as density approaches zero) was 35 ± 5 and 14 ± 2 in 1998 and 2000, respectively. Ladysthumb seed production was also described by the hyperbolic function. Estimated seed production at 1 plant m−1 of cotton row was 33,000 and 47,000 seed m−2 in 1998 and 2000, respectively.
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 9
Claim · model-written summary
Ladysthumb remained shorter than cotton until at least 70 days after cotton planting.
- Taxon
- cotton
Gossypium hirsutume1 - Interactor
- Ladysthumbe1weed
- Outcome
- remained shorter than cottone1
- Qualifier
- until at least 70 d after cotton plantinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Ladysthumb remained shorter than cotton until at least 70 d after cotton planting”
Claim · model-written summary
Ladysthumb grew over twice as tall as cotton.
- Taxon
- cottonGossypium hirsutume2
- Interactor
- ladysthumbe2weed
- Outcome
- grew over twice as tall as cottone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However, ladysthumb grew over twice as tall as cotton and, depending on plant density, produced between 179 and 681 g dry biomass per plant by cotton harvest”
Claim · model-written summary
Depending on plant density, ladysthumb produced 179 to 681 g dry biomass per plant by cotton harvest.
- Taxon
- cottonGossypium hirsutume2
- Interactor
- ladysthumbe2weed
- Outcome
- dry biomass per plante2
- Value
- 179 and 681 ge2
- Qualifier
- depending on plant densitye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However, ladysthumb grew over twice as tall as cotton and, depending on plant density, produced between 179 and 681 g dry biomass per plant by cotton harvest”
Claim · model-written summary
Ladysthumb biomass per plant was not affected by weed density when grown with cotton.
- Taxon
- cottonGossypium hirsutume3
- Treatment
- weed densitye3
- Interactor
- Ladysthumbe3weed
- Outcome
- Ladysthumb biomass per plante3
- Direction
- not affectede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Ladysthumb biomass per plant was not affected by weed density when grown with cotton”
Claim · model-written summary
When grown alone, ladysthumb produced over 2,000 g dry biomass per plant, over four times the biomass of plants grown with cotton.
- Taxon
- cottonGossypium hirsutume4
- Treatment
- grown alonee4
- Interactor
- ladysthumbe4weed
- Outcome
- dry biomass per plante4
- Direction
- over four times greatere4
- Qualifier
- over 2,000 ge4
- Comparator
- grown with cottone4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“When grown alone, ladysthumb produced over 2,000 g dry biomass per plant, which was over four times greater than biomass produced by plants grown with cotton”
Claim · model-written summary
Cotton lint yield decreased by 0.7 to 0.9 kg/ha with each gram increase in weed dry biomass per meter of row.
- Taxon
- CottonGossypium hirsutume5
- Interactor
- weede5weed
- Outcome
- lint yielde5
- Direction
- decreasede5
- Value
- 0.7 and 0.9 kg ha−1e5
- Qualifier
- with each gram increase in weed dry biomass per meter of the rowe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Cotton lint yield decreased between 0.7 and 0.9 kg ha−1 with each gram increase in weed dry biomass per meter of the row”
Claim · model-written summary
The relationship between ladysthumb density and cotton percent yield loss was described by a rectangular hyperbola model with the asymptote constrained to 100% maximum yield loss.
- Taxon
- cottonGossypium hirsutume6
- Interactor
- ladysthumbe6weed
- Outcome
- cotton percent yield losse6
- Qualifier
- rectangular hyperbola modele6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The relationship between ladysthumb density and cotton percent yield loss was described by the rectangular hyperbola model with the asymptote (coefficient a) constrained to 100% maximum yield loss”
Claim · model-written summary
The estimated coefficient i (yield loss per unit density as density approaches zero) was 35 ± 5 and 14 ± 2 in 1998 and 2000.
- Taxon
- cottonGossypium hirsutume6
- Interactor
- ladysthumbe6weed
- Outcome
- coefficient ie7
- Value
- 35 ± 5 and 14 ± 2e7
- Qualifier
- yield loss per unit density as density approaches zeroe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The relationship between ladysthumb density and cotton percent yield loss was described by the rectangular hyperbola model with the asymptote (coefficient a) constrained to 100% maximum yield loss”
e7“The estimated coefficient i (yield loss per unit density as density approaches zero) was 35 ± 5 and 14 ± 2 in 1998 and 2000, respectively”
Claim · model-written summary
Estimated seed production of ladysthumb at 1 plant per meter of cotton row was 33,000 and 47,000 seed per square meter in 1998 and 2000.
- Taxon
- cottonGossypium hirsutume1
- Interactor
- Ladysthumbe0weed
- Outcome
- seed productione1
- Value
- 33,000 and 47,000 seed m−2e1
- Qualifier
- at 1 plant m−1 of cotton rowe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ladysthumb seed production was also described by the hyperbolic function”
e1“Estimated seed production at 1 plant m−1 of cotton row was 33,000 and 47,000 seed m−2 in 1998 and 2000, respectively”
The same questions in other papers
competition · growth · Gossypium hirsutum (cotton)Results agree
8 papers in the same direction as this paper
- negative
- negative
- negative
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.