Claim · model-written summary
Bt corn significantly reduced corn earworm numbers in the early planting.
- Taxon
- Sweet Cornt0
- Treatment
- Bt-transgenic corne0
- Interactor
- Heliocoverpa zeae0pest
- Outcome
- numbers of corn earwormse0
- Direction
- reducede0
- Comparator
- non-Bt isolinee0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingValueQualifier
Verbatim
e0“numbers of corn earworms, Heliocoverpa zea (Boddie), were significantly reduced in the Bt-transgenic corn compared to the non-Bt isoline”
t0“Sweet Corn”
Title
Insect Populations on Bacillus thuringiensis Transgenic Sweet Corn
Richard L. Hassell; B. Merle Shepard Journal of Entomological Science 2002. doi:10.18474/0749-8004-37.4.285
Other claims from this paper (9)
- Observation No fall armyworms were present in early-planted corn.
- Intervention effect H. zea infested 65% of non-Bt ears versus 10% of Bt ears.
- Intervention effect H. zea damage and numbers were significantly higher in non-Bt mid- and late-season corn.
- Intervention effect S. frugiperda damage and numbers were significantly higher in non-Bt mid- and late-season corn.
- Intervention effect Mid-season H. zea ear damage was 77% in nontransgenic and 21% in Bt corn.
- Intervention effect Late-planted H. zea populations averaged fewer than 2 per 120 ears in Bt corn versus 15 per 120 ears in non-Bt corn.
- Association Fall armyworm whorl damage significantly reduced plant height in mid- and late-season nontransgenic crops, but not Bt corn.
- Intervention effect Other insect and spider numbers were low and did not significantly differ between treatments.
- Recommendation The authors expect Bt sweet corn to reduce H. zea and S. frugiperda populations and limit pesticide use.