Claim · model-written summary
Mid-season H. zea ear damage was 77% in nontransgenic and 21% in Bt corn.
- Taxon
- sweet corne0
- Treatment
- Bt-sweet corne0
- Interactor
- H. zeae0pest
- Outcome
- Percent damaged ears by H. zeae0
- Value
- 21%e0
- Qualifier
- 77%e0
- Comparator
- non-transgenic sweet corne0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingDirection
Verbatim
e0“Percent damaged ears by H. zea was 77% in the non-transgenic sweet corn and 21% in the Bt-sweet corn during the mid-season crop.”
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 Bt corn significantly reduced corn earworm numbers in the early planting.
- 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 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.