Abstract
Seed cotton ( Gossypium hirsutum L.) yields were not reduced when competing with prickly sida ( Sida spinosa L.) for 7 weeks or less after cotton emergence and maintained weed-free for the remainder of the season. Cotton yields were not affected when pure prickly sida stands were controlled for 5 to 6 weeks after cotton emergence and then allowed to grow uncontrolled for the remainder of the season. In the more severe weed competition treatments, cotton plant height and main stem diameter were reduced; however, yield of seed cotton was the most sensitive indicator of prickly sida competition. Maturity of cotton, as measured by percent of total yield obtained at first picking, indicated a delay in maturity in 1 of 3 yr in treatments where competing prickly sida was present for 8 weeks or more. In density studies, where prickly sida emerged with cotton and was allowed to compete for the full growing season, 45 prickly sida plants/15 m of row caused reductions in yield of seed cotton in two of five experiments. In another series of three experiments as few as 32 prickly sida plants/15 m of row significantly reduced seed cotton yields in two of the three experiments. Trash content of machine-harvested cotton was increased at densities of 64 and 128 prickly sida plants/15 m of row in one experiment. Staple length and grade of cotton were not affected by any weed density studied. Micronaire measurements of cotton were reduced at prickly sida densities of 64 and 128 weeds/15 m of row during 1972.
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Claims 10
Claim · model-written summary
Seed cotton yield was not reduced when cotton competed with prickly sida for 7 weeks or less after emergence and was kept weed-free thereafter.
- Taxon
- Gossypium hirsutum
Gossypium hirsutume1 - Treatment
- competing with prickly sidae1
- Interactor
- prickly sidae1weed
- Outcome
- yieldse1
- Direction
- not reducede1
- Qualifier
- for 7 weeks or less after cotton emergencee1
- Comparator
- maintained weed-freee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seed cotton ( Gossypium hirsutum L.) yields were not reduced when competing with prickly sida ( Sida spinosa L.) for 7 weeks or less after cotton emergence and maintained weed-free for the remainder of the season”
Claim · model-written summary
Cotton yield was not affected when pure prickly sida stands were controlled for 5 to 6 weeks after emergence and then left uncontrolled for the rest of the season.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- pure prickly sida stands were controlled for 5 to 6 weekse1
- Interactor
- prickly sidae1weed
- Outcome
- yieldse1
- Direction
- not affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton yields were not affected when pure prickly sida stands were controlled for 5 to 6 weeks after cotton emergence and then allowed to grow uncontrolled for the remainder of the season”
Claim · model-written summary
Under more severe weed competition, cotton plant height and main stem diameter were reduced.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- more severe weed competition treatmentse1
- Outcome
- cotton plant height and main stem diametere1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the more severe weed competition treatments, cotton plant height and main stem diameter were reduced”
Claim · model-written summary
Seed cotton yield was the most sensitive indicator of prickly sida competition among the measured traits.
- Taxon
- cottonGossypium hirsutume1
- Interactor
- prickly sidae1weed
- Outcome
- yield of seed cottone1
- Qualifier
- most sensitive indicator of prickly sida competitione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“yield of seed cotton was the most sensitive indicator of prickly sida competition”
Claim · model-written summary
Prickly sida present for 8 weeks or more delayed cotton maturity in 1 of 3 years.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- competing prickly sida was present for 8 weeks or moree1
- Interactor
- prickly sidae1weed
- Outcome
- Maturity of cottone1
- Direction
- delaye1
- Qualifier
- in 1 of 3 yre1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Maturity of cotton, as measured by percent of total yield obtained at first picking, indicated a delay in maturity in 1 of 3 yr in treatments where competing prickly sida was present for 8 weeks or more”
Claim · model-written summary
A density of 45 prickly sida plants per 15 m of row reduced seed cotton yield in two of five experiments.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- 45 prickly sida plants/15 m of rowe1
- Interactor
- prickly sidae1weed
- Outcome
- yield of seed cottone1
- Direction
- reductionse1
- Qualifier
- in two of five experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“45 prickly sida plants/15 m of row caused reductions in yield of seed cotton in two of five experiments”
Claim · model-written summary
As few as 32 prickly sida plants per 15 m of row significantly reduced seed cotton yield in two of three experiments.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- 32 prickly sida plants/15 m of rowe1
- Interactor
- prickly sidae1weed
- Outcome
- seed cotton yieldse1
- Direction
- reducede1
- Qualifier
- in two of the three experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In another series of three experiments as few as 32 prickly sida plants/15 m of row significantly reduced seed cotton yields in two of the three experiments”
Claim · model-written summary
Trash content of machine-harvested cotton increased at prickly sida densities of 64 and 128 plants per 15 m of row in one experiment.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- densities of 64 and 128 prickly sida plants/15 m of rowe1
- Interactor
- prickly sidae1weed
- Outcome
- Trash content of machine-harvested cottone1
- Direction
- increasede1
- Qualifier
- in one experimente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Trash content of machine-harvested cotton was increased at densities of 64 and 128 prickly sida plants/15 m of row in one experiment”
Claim · model-written summary
Staple length and grade of cotton were not affected by any weed density studied.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- weed densitye1
- Outcome
- Staple length and grade of cottone1
- Direction
- not affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Staple length and grade of cotton were not affected by any weed density studied”
Claim · model-written summary
Micronaire of cotton was reduced at prickly sida densities of 64 and 128 weeds per 15 m of row during 1972.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- prickly sida densities of 64 and 128 weeds/15 m of rowe1
- Interactor
- prickly sidae1weed
- Outcome
- Micronaire measurementse1
- Direction
- reducede1
- Qualifier
- during 1972e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Micronaire measurements of cotton were reduced at prickly sida densities of 64 and 128 weeds/15 m of row during 1972”
The same questions in other papers
competition · organism · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- negative
- negative
competition · growth · Gossypium hirsutum (cotton)Results agree
8 papers in the same direction as this paper
- negative
- negative
- no effect
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.