Abstract
Grandlure-baited pheromone traps were evaluated on commercial farms from 1977 to 1980 as a sampling tool for use in the prediction of damage to cotton flower buds based on mean number of overwintered adult Anthonomus grandis grandis Boheman captured in traps. A highly significant predictive equation (R 2 = 0.9815) was calculated between 6 weeks of cumulative weekly captures per trap per field previous to the occurrence of squares sufficiently large for oviposition (trap index) and the subsequent 2 weeks of square damage. Fields treated with insecticide to control boll weevils resulted in a significantly lower regression slope compared to untreated fields, showing that population growth was suppressed. We define trap index thresholds and suggest a method for their use in the management of over wintered boll weevils and damage to commercial cotton in the lower Gulf Coast of Texas.
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Claims 3
Claim · model-written summary
Cumulative trap captures strongly predicted subsequent cotton square damage.
- Taxon
- cotton
Gossypium hirsutume1 - Interactor
- Anthonomus grandis grandis Boheman
Anthonomus grandise1pest - Outcome
- square damagee0
- Value
- R 2 = 0.9815e0
- Qualifier
- 6 weeks of cumulative weekly captures per trap per fielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A highly significant predictive equation (R 2 = 0.9815) was calculated between 6 weeks of cumulative weekly captures per trap per field previous to the occurrence of squares sufficiently large for oviposition (trap index) and the subsequent 2 weeks of square damage.”
e1“damage to cotton flower buds based on mean number of overwintered adult Anthonomus grandis grandis Boheman captured in traps.”
Claim · model-written summary
Insecticide-treated fields had a lower regression slope than untreated fields, indicating suppressed boll weevil population growth.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- insecticidee0
- Interactor
- boll weevilsAnthonomus grandise0pest
- Outcome
- regression slopee0
- Direction
- lowere0
- Comparator
- untreated fieldse0
- Setting
- lower Gulf Coast of Texase1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fields treated with insecticide to control boll weevils resulted in a significantly lower regression slope compared to untreated fields, showing that population growth was suppressed.”
e1“damage to commercial cotton in the lower Gulf Coast of Texas.”
Claim · model-written summary
The authors define trap index thresholds and suggest their use to manage overwintered boll weevils and cotton damage.
- Taxon
- cottonGossypium hirsutume0
- Interactor
- boll weevilsAnthonomus grandise0pest
- Outcome
- trap index thresholds and suggest a method for their use in the management of over wintered boll weevils and damage to commercial cottone0
- Setting
- lower Gulf Coast of Texase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We define trap index thresholds and suggest a method for their use in the management of over wintered boll weevils and damage to commercial cotton in the lower Gulf Coast of Texas.”
The same questions in other papers
insecticide · Anthonomus grandis · Gossypium hirsutum (cotton)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.