Abstract
Widespread planting of crops genetically modified to express Bacillus thuringiensis (Bt) toxins for pest control may potentially affect nontarget pests and soil-borne disease. In this study, a field trial was conducted to explore the effects of habitat diversification, specifically an intraspecies mixture of genetically distinct cotton lines, on nontarget pests and soil-borne disease. It was hypothesized that the mixture would suppress disease severity and would alter pest and predator abundances. Results confirmed that a row-mixture of 75% insect-resistant cotton and 25% disease-resistant cotton suppressed Fusarium wilt and controlled cotton aphids. However, intercropping at the genotypic level increased mirid bug and sweetpotato whitefly densities in cotton. Moreover, the effect of the mixture on predator abundance ranged from neutral to positive and was highly variable among species and years. Species-specific pest responses to the crop mixture provide new insights for optimally sized and configured refuge construction in the future.
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Claims 5
Claim · model-written summary
A cotton row mixture suppressed Fusarium wilt.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- a row-mixture of 75% insect-resistant cotton and 25% disease-resistant cottone0
- Outcome
- Fusarium wilte0
- Direction
- suppressede0
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a row-mixture of 75% insect-resistant cotton and 25% disease-resistant cotton suppressed Fusarium wilt”
Claim · model-written summary
The cotton row mixture controlled cotton aphids.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- a row-mixture of 75% insect-resistant cotton and 25% disease-resistant cottone0
- Interactor
- cotton aphids
Aphis gossypiie0pest - Outcome
- cotton aphidse0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a row-mixture of 75% insect-resistant cotton and 25% disease-resistant cotton suppressed Fusarium wilt and controlled cotton aphids”
Claim · model-written summary
Genotype-level intercropping increased mirid bug density in cotton.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- intercropping at the genotypic levele0
- Interactor
- mirid buge0pest
- Outcome
- mirid buge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intercropping at the genotypic level increased mirid bug and sweetpotato whitefly densities in cotton”
Claim · model-written summary
Genotype-level intercropping increased sweetpotato whitefly density in cotton.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- intercropping at the genotypic levele0
- Interactor
- sweetpotato whitefly
Bemisia tabacie0pest - Outcome
- sweetpotato whitefly densitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intercropping at the genotypic level increased mirid bug and sweetpotato whitefly densities in cotton”
Claim · model-written summary
The cotton mixture had neutral to positive, species- and year-dependent effects on predator abundance.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- the mixturee0
- Outcome
- predator abundancee0
- Qualifier
- highly variable among species and yearse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of the mixture on predator abundance ranged from neutral to positive and was highly variable among species and years”
e1“genetically distinct cotton lines”
The same questions in other papers
intercropping · Bemisia tabaci · Gossypium hirsutum (cotton)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.