Abstract
Summary Transmission of potato vims Y to sweet pepper by the green peach aphid, Myzus persicae (Sulzer), was inhibited by foliar applications of 1.0% or 2.0% neem seed oil to infected source plants or to uninfected recipient plants. Neem seed oil interfered with virus acquisition and inoculation in a manner comparable to that of a commercial horticultural oil, while an oil‐free neem seed extract did not reduce rates of transmission compared with controls. The finding that neem seed oil inhibits virus transmission, while oil‐free neem seed extract does not, suggests that the presence of the oil rather than biologically active limonoids such as azadirachtin interfere with virus transmission. None of the treatments affected rates of infection when potato virus Y was transmitted mechanically, or the resulting virus titre and symptom expression. In addition to direct control of insect pests, formulated neem oils may help reduce or delay the spread of non‐persistent plant viruses.
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Claims 7
Claim · model-written summary
Foliar 1.0% or 2.0% neem seed oil on infected source plants inhibited aphid transmission of potato virus Y to pepper.
- Taxon
- sweet pepper
Capsicum annuume0 - Treatment
- foliar applications of 1.0% or 2.0% neem seed oil to infected source plantse0
- Interactor
- potato vims Ye0pathogen
- Second interactor
- Myzus persicae
Myzus persicaee0pest - Outcome
- Transmission of potato vims Ye0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transmission of potato vims Y to sweet pepper by the green peach aphid, Myzus persicae (Sulzer), was inhibited by foliar applications of 1.0% or 2.0% neem seed oil to infected source plants or to uninfected recipient plants.”
Claim · model-written summary
Foliar 1.0% or 2.0% neem seed oil on uninfected recipients inhibited aphid transmission of potato virus Y to pepper.
- Taxon
- sweet pepperCapsicum annuume0
- Treatment
- foliar applications of 1.0% or 2.0% neem seed oil to infected source plants or to uninfected recipient plantse0
- Interactor
- potato vims Ye0pathogen
- Second interactor
- Myzus persicaeMyzus persicaee0pest
- Outcome
- Transmission of potato vims Ye0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transmission of potato vims Y to sweet pepper by the green peach aphid, Myzus persicae (Sulzer), was inhibited by foliar applications of 1.0% or 2.0% neem seed oil to infected source plants or to uninfected recipient plants.”
Claim · model-written summary
Neem oil interfered with virus acquisition and inoculation comparably to commercial horticultural oil.
Verbatim
e0“Neem seed oil interfered with virus acquisition and inoculation in a manner comparable to that of a commercial horticultural oil”
t0“pepper”
Claim · model-written summary
Oil-free neem seed extract did not reduce transmission relative to controls.
Verbatim
e0“an oil‐free neem seed extract did not reduce rates of transmission compared with controls”
t0“pepper”
Claim · model-written summary
Treatments did not affect mechanically transmitted virus infection rates.
- Taxon
- peppert0
- Treatment
- treatmentse0
- Interactor
- potato virus Y
Potato virus Ye0pathogen - Outcome
- rates of infectione0
- Direction
- None of the treatments affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the treatments affected rates of infection when potato virus Y was transmitted mechanically”
t0“pepper”
Claim · model-written summary
Treatments did not affect resultant virus titre and symptom expression.
- Taxon
- peppert0
- Treatment
- treatmentse0
- Interactor
- potato virus YPotato virus Ye0pathogen
- Outcome
- virus titre and symptom expressione0
- Direction
- None of the treatments affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the treatments affected rates of infection when potato virus Y was transmitted mechanically, or the resulting virus titre and symptom expression.”
t0“pepper”
Claim · model-written summary
The authors suggest formulated neem oils may reduce or delay spread of non-persistent plant viruses.
Verbatim
e0“formulated neem oils may help reduce or delay the spread of non‐persistent plant viruses”
t0“pepper”
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