Abstract
The impact of applying edible oils to corn silks on ear-feeding insects in sweet corn, Zea mays L., production was evaluated in 2006 and 2007. Six edible oils used in this experiment were canola, corn, olive, peanut, sesame, and soybean. Water and two commercial insecticidal oils (Neemix neem oil and nC21 Sunspray Ultrafine, a horticultural mineral oil) were used as the controls for the experiment. Six parameters evaluated in this experiment were corn earworm [Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae)] damage rating, the number of sap beetle [Carpophilus spp. (Coleoptera: Nitidulidae)] adults and larvae, the number of corn silk fly (or picture-winged fly) (Diptera: Ulidiidae) larvae, common smut [Ustilago maydis (D.C.) Corda] infection rate, and corn husk coverage. Among the two control treatments, neem oil reduced corn earworm damage at both pre- and postpollination applications in 2006, but not in 2007, whereas the mineral oil applied at postpollination treatments reduced corn earworm damage in both years. The mineral oil also reduced the number of sap beetle adults, whereas the neem oil applied at postpollination attracted the most sap beetle adults in 2007. Among the six edible oil treatments, the corn and sesame oils applied at postpollination reduced corn earworm damage only in 2007. The application of the peanut oil at postpollination attracted more sap beetle adults in 2006, and more sap beetle larvae in 2007. Olive and neem oils significantly reduced husk coverage compared with the water control in both years. The mineral oil application consistently increased smut infection rate in both 2006 and 2007. Ramifications of using oil treatments in ear pest management also are discussed.
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Claims 12
Claim · model-written summary
Neem oil reduced corn earworm damage in sweet corn at both pre- and postpollination applications in 2006.
- Taxon
- Sweet Cornt0
- Treatment
- neem oile0
- Interactor
- corn earworm
.jpg?width=60)
Helicoverpa zeae0pest - Outcome
- corn earworm damagee0
- Direction
- reducede0
- Qualifier
- at both pre- and postpollination applications in 2006e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“neem oil reduced corn earworm damage at both pre- and postpollination applications in 2006, but not in 2007”
t0“Sweet Corn”
Claim · model-written summary
Neem oil did not reduce corn earworm damage in sweet corn in 2007.
- Taxon
- Sweet Cornt0
- Treatment
- neem oile0
- Interactor
- corn earwormHelicoverpa zeae0pest
- Outcome
- corn earworm damagee0
- Direction
- no_changeinferrede0
- Qualifier
- not in 2007e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neem oil reduced corn earworm damage at both pre- and postpollination applications in 2006, but not in 2007”
t0“Sweet Corn”
Claim · model-written summary
Mineral oil applied at postpollination reduced corn earworm damage in sweet corn in both years.
- Taxon
- Sweet Cornt0
- Treatment
- mineral oil applied at postpollinatione0
- Interactor
- corn earwormHelicoverpa zeae0pest
- Outcome
- corn earworm damagee0
- Direction
- reducede0
- Qualifier
- in both yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mineral oil applied at postpollination treatments reduced corn earworm damage in both years”
t0“Sweet Corn”
Claim · model-written summary
Mineral oil reduced the number of sap beetle adults in sweet corn.
- Taxon
- Sweet Cornt0
- Treatment
- mineral oile0
- Interactor
- sap beetlee0pest
- Outcome
- number of sap beetle adultse0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“The mineral oil also reduced the number of sap beetle adults”
t0“Sweet Corn”
Claim · model-written summary
Neem oil applied at postpollination attracted the most sap beetle adults in sweet corn in 2007.
- Taxon
- Sweet Cornt0
- Treatment
- neem oil applied at postpollinatione0
- Interactor
- sap beetlee0pest
- Outcome
- sap beetle adultse0
- Direction
- attracted the moste0
- Qualifier
- in 2007e0
Not reportedComparator
Verbatim
e0“the neem oil applied at postpollination attracted the most sap beetle adults in 2007”
t0“Sweet Corn”
Claim · model-written summary
Corn oil applied at postpollination reduced corn earworm damage in sweet corn only in 2007.
- Taxon
- Sweet Cornt0
- Treatment
- corne0
- Interactor
- corn earwormHelicoverpa zeae0pest
- Outcome
- corn earworm damagee0
- Direction
- reducede0
- Qualifier
- only in 2007e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the corn and sesame oils applied at postpollination reduced corn earworm damage only in 2007”
t0“Sweet Corn”
Claim · model-written summary
Sesame oil applied at postpollination reduced corn earworm damage in sweet corn only in 2007.
- Taxon
- Sweet Cornt0
- Treatment
- sesame oils applied at postpollinatione0
- Interactor
- corn earwormHelicoverpa zeae0pest
- Outcome
- corn earworm damagee0
- Direction
- reducede0
- Qualifier
- only in 2007e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the corn and sesame oils applied at postpollination reduced corn earworm damage only in 2007”
t0“Sweet Corn”
Claim · model-written summary
Peanut oil applied at postpollination attracted more sap beetle adults in sweet corn in 2006.
- Taxon
- Sweet Cornt0
- Treatment
- peanut oil at postpollinatione0
- Interactor
- sap beetlee0pest
- Outcome
- sap beetle adultse0
- Direction
- moree0
- Qualifier
- in 2006e0
Not reportedComparator
Verbatim
e0“The application of the peanut oil at postpollination attracted more sap beetle adults in 2006, and more sap beetle larvae in 2007”
t0“Sweet Corn”
Claim · model-written summary
Peanut oil applied at postpollination attracted more sap beetle larvae in sweet corn in 2007.
- Taxon
- Sweet Cornt0
- Treatment
- peanut oil at postpollinatione0
- Interactor
- sap beetlee0pest
- Outcome
- sap beetle larvaee0
- Direction
- moree0
- Qualifier
- in 2007e0
Not reportedComparator
Verbatim
e0“The application of the peanut oil at postpollination attracted more sap beetle adults in 2006, and more sap beetle larvae in 2007”
t0“Sweet Corn”
Claim · model-written summary
Olive oil significantly reduced husk coverage compared with the water control in both years.
Verbatim
e0“Olive and neem oils significantly reduced husk coverage compared with the water control in both years”
t0“Sweet Corn”
Claim · model-written summary
Neem oil significantly reduced husk coverage compared with the water control in both years.
Verbatim
e0“Olive and neem oils significantly reduced husk coverage compared with the water control in both years”
t0“Sweet Corn”
Claim · model-written summary
Mineral oil application consistently increased smut infection rate in sweet corn in both 2006 and 2007.
- Taxon
- Sweet Cornt0
- Treatment
- mineral oil applicatione0
- Interactor
- smute0pathogen
- Outcome
- smut infection ratee0
- Direction
- increasede0
- Qualifier
- in both 2006 and 2007e0
Not reportedComparator
Verbatim
e0“The mineral oil application consistently increased smut infection rate in both 2006 and 2007”
t0“Sweet Corn”
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See all 90 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.