Abstract
Abstract Cotton pests damaging fruiting bodies (squares and young bolls) are difficult to control and their damage results in direct yield loss. Small growers, with low technological inputs, represent a large portion of cotton growers worldwide comprising more than 76 countries; they rely mainly on cultural practices to counteract pest attack in their crops. Boll weevil, A nthonomus grandis B oheman ( C oleoptera: C urculionidae), oviposition involves puncturing cotton squares and young bolls, causing abscission. We examined the impact on boll weevil population of collecting abscised cotton fruiting bodies and clipping plant terminals at 50% boll maturation in the field during two cotton‐growing seasons and under field cage conditions. Greatest numbers of damaged squares occurred ca. 117 days after planting and clipped plants resulted in reduction of abscised structures and adult boll weevils compared with non‐clipped plants, irrespective of cotton variety. Damaged young bolls were found ca. 128 days after planting in 2009 and 2011, but clipping had no effect. Numbers of boll weevils found in plants of the varieties BRS 201 and BRS R ubi (both in 2009) and BRS R ubi (in 2011) were, respectively, 13‐, 17‐, and 20‐fold greater when clipping plus collecting abscised fruiting bodies were not practiced. Furthermore, the average percentage of the boll weevil parasitoid B racon vulgaris A shmead ( H ymenoptera: B raconidae) emerging from abscised and collected structures was similar between clipped and non‐clipped plant terminals in both seasons. Clipping plant terminals did not result in yield reduction and reduced adult boll weevil production. Collecting abscised reproductive structures, clipping plant terminals, and using both practices together reduced boll weevil populations by as much as 63, 57, and 79%, respectively, in cage trials. Thus, these practices cause significant impact on boll weevil populations and are feasible of adoption, especially for smallholder cotton growers.
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 15
Claim · model-written summary
Damaged cotton squares were most numerous about 117 days after planting.
- Taxon
- cotton
Gossypium hirsutume1 - Interactor
- Boll weevil
Anthonomus grandise1pest - Outcome
- damaged squarese0
- Value
- ca. 117 days after plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greatest numbers of damaged squares occurred ca. 117 days after planting”
e1“Boll weevil, A nthonomus grandis B oheman ( C oleoptera: C urculionidae), oviposition involves puncturing cotton squares and young bolls”
Claim · model-written summary
Clipped cotton plants had fewer abscised structures than unclipped plants, regardless of variety.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- clipped plantse0
- Outcome
- abscised structurese0
- Direction
- reductione0
- Qualifier
- irrespective of cotton varietye0
- Comparator
- non‐clipped plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“clipped plants resulted in reduction of abscised structures and adult boll weevils compared with non‐clipped plants, irrespective of cotton variety”
e1“cotton variety”
Claim · model-written summary
Clipped cotton plants had fewer adult boll weevils than unclipped plants, regardless of variety.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- clipped plantse0
- Interactor
- boll weevilsAnthonomus grandise0pest
- Outcome
- adult boll weevilse0
- Direction
- reductione0
- Comparator
- non‐clipped plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“clipped plants resulted in reduction of abscised structures and adult boll weevils compared with non‐clipped plants, irrespective of cotton variety”
e1“cotton variety”
Claim · model-written summary
Damaged young cotton bolls occurred around 128 days after planting in both study years.
- Taxon
- cottonGossypium hirsutume1
- Outcome
- Damaged young bollse0
- Value
- ca. 128 days after plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Damaged young bolls were found ca. 128 days after planting in 2009 and 2011”
e1“cotton squares and young bolls”
Claim · model-written summary
Clipping did not affect damaged young cotton bolls.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- clippinge0
- Outcome
- Damaged young bollse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Damaged young bolls were found ca. 128 days after planting in 2009 and 2011, but clipping had no effect”
e1“cotton squares and young bolls”
Claim · model-written summary
Without clipping and collection, BRS 201 cotton had 13-fold more boll weevils in 2009.
- Taxon
- cottonGossypium hirsutume1
- Material
- BRS 201e0
- Treatment
- clipping plus collecting abscised fruiting bodiese0
- Interactor
- boll weevilsAnthonomus grandise0pest
- Outcome
- Numbers of boll weevilse0
- Direction
- greatere0
- Value
- 13‐e0
- Comparator
- not practicede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of boll weevils found in plants of the varieties BRS 201 and BRS R ubi (both in 2009) and BRS R ubi (in 2011) were, respectively, 13‐, 17‐, and 20‐fold greater when clipping plus collecting abscised fruiting bodies were not practiced”
e1“cotton variety”
Claim · model-written summary
Without clipping and collection, BRS R ubi cotton had 17-fold more boll weevils in 2009.
- Taxon
- cottonGossypium hirsutume1
- Material
- BRS R ubie0
- Treatment
- clipping plus collecting abscised fruiting bodiese0
- Interactor
- boll weevilsAnthonomus grandise0pest
- Outcome
- Numbers of boll weevilse0
- Direction
- greatere0
- Value
- 17‐e0
- Comparator
- not practicede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of boll weevils found in plants of the varieties BRS 201 and BRS R ubi (both in 2009) and BRS R ubi (in 2011) were, respectively, 13‐, 17‐, and 20‐fold greater when clipping plus collecting abscised fruiting bodies were not practiced”
e1“cotton variety”
Claim · model-written summary
Without clipping and collection, BRS R ubi cotton had 20-fold more boll weevils in 2011.
- Taxon
- cottonGossypium hirsutume1
- Material
- BRS R ubie0
- Treatment
- clipping plus collecting abscised fruiting bodiese0
- Interactor
- boll weevilsAnthonomus grandise0pest
- Outcome
- Numbers of boll weevilse0
- Direction
- greatere0
- Value
- 20‐folde0
- Comparator
- not practicede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of boll weevils found in plants of the varieties BRS 201 and BRS R ubi (both in 2009) and BRS R ubi (in 2011) were, respectively, 13‐, 17‐, and 20‐fold greater when clipping plus collecting abscised fruiting bodies were not practiced”
e1“cotton variety”
Claim · model-written summary
Clipping did not change the percentage of Bracon vulgaris emerging from collected cotton structures.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- clippede0
- Interactor
- B racon vulgaris A shmeade0biocontrol_agent
- Outcome
- percentage of the boll weevil parasitoid B racon vulgaris A shmead ( H ymenoptera: B raconidae) emerginge0
- Direction
- similare0
- Comparator
- non‐clipped plant terminalse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average percentage of the boll weevil parasitoid B racon vulgaris A shmead ( H ymenoptera: B raconidae) emerging from abscised and collected structures was similar between clipped and non‐clipped plant terminals in both seasons”
e1“cotton‐growing seasons”
Claim · model-written summary
Clipping cotton terminals did not reduce yield.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Clipping plant terminalse0
- Outcome
- yielde0
- Direction
- did not result in yield reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clipping plant terminals did not result in yield reduction”
e1“cotton‐growing seasons”
Claim · model-written summary
Clipping cotton terminals reduced adult boll weevil production.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Clipping plant terminalse0
- Interactor
- boll weevilAnthonomus grandise0pest
- Outcome
- adult boll weevil productione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clipping plant terminals did not result in yield reduction and reduced adult boll weevil production”
e1“cotton‐growing seasons”
Claim · model-written summary
Collection alone reduced boll weevil populations by up to 63% in cage trials.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Collecting abscised reproductive structurese0
- Interactor
- boll weevilAnthonomus grandise0pest
- Outcome
- boll weevil populationse0
- Direction
- reducede0
- Value
- 63e0
- Setting
- cage trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Collecting abscised reproductive structures, clipping plant terminals, and using both practices together reduced boll weevil populations by as much as 63, 57, and 79%, respectively, in cage trials”
e1“cotton‐growing seasons”
Claim · model-written summary
Clipping alone reduced boll weevil populations by up to 57% in cage trials.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- clipping plant terminalse0
- Interactor
- boll weevilAnthonomus grandise0pest
- Outcome
- boll weevil populationse0
- Direction
- reducede0
- Value
- 57e0
- Setting
- cage trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Collecting abscised reproductive structures, clipping plant terminals, and using both practices together reduced boll weevil populations by as much as 63, 57, and 79%, respectively, in cage trials”
e1“cotton‐growing seasons”
Claim · model-written summary
Combined collection and clipping reduced boll weevil populations by up to 79% in cage trials.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- using both practices togethere0
- Interactor
- boll weevilAnthonomus grandise0pest
- Outcome
- boll weevil populationse0
- Direction
- reducede0
- Value
- 79%e0
- Setting
- cage trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Collecting abscised reproductive structures, clipping plant terminals, and using both practices together reduced boll weevil populations by as much as 63, 57, and 79%, respectively, in cage trials”
e1“cotton‐growing seasons”
Claim · model-written summary
The authors consider collection and clipping feasible, especially for smallholder cotton growers.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- feasible of adoptione0
- Qualifier
- especially for smallholder cotton growerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these practices cause significant impact on boll weevil populations and are feasible of adoption, especially for smallholder cotton growers”
The same questions in other papers
mechanical · yield · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.