Abstract
Abstract Thrips (Thysanoptera: Thripidae( and cotton fleahoppers, Pseudatomoscelis seriatus (Reuter( (Hemiptera: Miridae(, are considered to be significant economic pests of cotton in Texas, USA. A 2-year field study evaluated the influence of planting date, tillage practice, and Bt cotton on seasonal abundance patterns of thrips and cotton fleahoppers and their within-plant distribution patterns in cotton. Thrips were sampled visually while fleahoppers were sampled both visually and with a ‘beat bucket’ at weekly intervals throughout the growing season. Thrips infestations had two distinct peaks, with the first peak at the one to two main stem node leaf stage and the second peak during the flowering stage. Cotton fleahoppers had only one infestation peak at 13 – 15 weeks after planting (after crop cutout(. Average seasonal abundance of each pest was significantly influenced by tillage practice with higher numbers in conventional tillage compared with that in conservation tillage plots. Thrips abundance was similar between the two cultivars, whereas cotton fleahopper abundance was significantly higher in non-Bt cotton compared with that in Bt cotton. Thrips average seasonal abundance was significantly higher in timely planted cotton compared with that in late-planted cotton. Thrips were more prevalent in upper one-third vertical stratum (51%( followed by middle stratum (33%( and the lower stratum (16%(. Cotton fleahopper within-plant distribution was similar to that for thrips, with 65, 24, and 11% of the total abundance found in upper, middle, and lower one-third of the plant, respectively.
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Claims 11
Claim · model-written summary
Thrips infestation peaked at the one to two node leaf stage and flowering.
- Taxon
- cotton
Gossypium hirsutumt0 - Organ / stage
- one to two main stem node leaf stagee0
- Outcome
- Thrips infestationse0
- Value
- two distinct peakse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thrips infestations had two distinct peaks, with the first peak at the one to two main stem node leaf stage and the second peak during the flowering stage.”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
Cotton fleahopper infestation peaked at 13–15 weeks after planting.
- Taxon
- cottonGossypium hirsutumt0
- Interactor
- Cotton fleahoppers
Pseudatomoscelis seriatuse0pest - Outcome
- Cotton fleahopperse0
- Value
- 13 – 15 weekse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton fleahoppers had only one infestation peak at 13 – 15 weeks after planting (after crop cutout(”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
Conventional tillage had higher seasonal thrips abundance than conservation tillage.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- conventional tillagee0
- Outcome
- Average seasonal abundance of each peste0
- Direction
- highere0
- Comparator
- conservation tillagee0
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average seasonal abundance of each pest was significantly influenced by tillage practice with higher numbers in conventional tillage compared with that in conservation tillage plots.”
e1“Thrips infestations”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
Conventional tillage had higher seasonal cotton fleahopper abundance than conservation tillage.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- conventional tillagee0
- Interactor
- cotton fleahoppersPseudatomoscelis seriatuse1pest
- Outcome
- Average seasonal abundance of each peste0
- Direction
- highere0
- Comparator
- conservation tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average seasonal abundance of each pest was significantly influenced by tillage practice with higher numbers in conventional tillage compared with that in conservation tillage plots.”
e1“cotton fleahoppers, Pseudatomoscelis seriatus”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
Thrips abundance was similar between the two cotton cultivars.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- two cultivarse0
- Outcome
- Thrips abundancee0
- Direction
- similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thrips abundance was similar between the two cultivars”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
Cotton fleahopper abundance was significantly higher in non-Bt than Bt cotton.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- non-Bt cottone0
- Interactor
- cotton fleahopperPseudatomoscelis seriatuse0pest
- Outcome
- cotton fleahopper abundancee0
- Direction
- highere0
- Comparator
- Bt cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cotton fleahopper abundance was significantly higher in non-Bt cotton compared with that in Bt cotton”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
Thrips seasonal abundance was significantly higher in timely than late planted cotton.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- timely planted cottone0
- Outcome
- Thrips average seasonal abundancee0
- Direction
- highere0
- Comparator
- late-planted cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thrips average seasonal abundance was significantly higher in timely planted cotton compared with that in late-planted cotton.”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
The upper third of cotton plants held 51% of thrips.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- upper one-third vertical stratume0
- Outcome
- Thripse0
- Direction
- more prevalente0
- Value
- 51%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thrips were more prevalent in upper one-third vertical stratum (51%(”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
The middle third of cotton plants held 33% of thrips.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- middle stratume0
- Outcome
- Thripse1
- Value
- 33%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“middle stratum (33%(”
e1“Thrips were more prevalent in upper one-third vertical stratum (51%( followed by middle stratum (33%(”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
The lower third of cotton plants held 16% of thrips.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- lower stratume0
- Outcome
- Thripse1
- Value
- 16%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lower stratum (16%(”
e1“Thrips were more prevalent in upper one-third vertical stratum (51%( followed by middle stratum (33%( and the lower stratum (16%(”
t0“thrips and cotton fleahoppers in cotton”
Claim · model-written summary
The upper third of cotton plants held 65% of fleahoppers.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- uppere0
- Interactor
- Cotton fleahopperPseudatomoscelis seriatuse0pest
- Outcome
- Cotton fleahopper within-plant distributione0
- Value
- 65e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton fleahopper within-plant distribution was similar to that for thrips, with 65, 24, and 11% of the total abundance found in upper, middle, and lower one-third of the plant, respectively.”
t0“thrips and cotton fleahoppers in cotton”
The same questions in other papers
sowing time · Thrips · Gossypium hirsutum (cotton)Positive and negative results
1 in the opposite direction
- positive
tillage · Thrips · Gossypium hirsutum (cotton)Positive and negative results
2 in the opposite direction
- positive
- positive
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.