Abstract
The effects of Neem EC (M/S RYM Exports - The Indian Neem Tree Company, 1% azadirachtin) were assessed on the Large White Butterfly, Pieris brassicae - a major pest of cruciferous plants. Duration of the larval stage, mortality of larvae and prepupae, and weight of pupae were studied. The time needed for completion of the larval stages by individuals fed on treated cabbage increased significantly, compared with the control: 16-37 days in the test variant, versus 11-18 days in the control. Neem EC also induced high mortality, caused by lethal failures of larval-larval and larval-pupal ecdysis, which were typical for insecticides possessing morphogenetic activity commonly referred to as IGR-activity. The mortality of larvae and prepupae in the test variant was significantly higher than in the control. Considerably fewer pupae were gained in the test variant than in the control variant. The pupae of larvae that had been feeding on the control were significantly heavier than those of the larvae feeding on the treated plants. The experiment revealed that Neem EC had both toxic and antifeedant/deterrent effects but also acted as a growth regulator for P. brassicae larvae.
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Claims 6
Claim · model-written summary
Larval development lasted longer on treated cabbage than control cabbage.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Treatment
- treated cabbagee0
- Interactor
- Pieris brassicae
_Pieris_brassicae_-_Foret_de_Bouconne%2C_France_-_female.jpg?width=60)
Pieris brassicaet0pest - Outcome
- time needed for completion of the larval stagese0
- Direction
- increasede0
- Value
- 16-37 dayse0
- Qualifier
- 11-18 dayse0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Pieris_brassicae_-_Foret_de_Bouconne%2C_France_-_female.jpg?width=500)
Verbatim
e0“The time needed for completion of the larval stages by individuals fed on treated cabbage increased significantly, compared with the control: 16-37 days in the test variant, versus 11-18 days in the control”
t0“Pieris brassicae”
Claim · model-written summary
Neem EC caused high mortality in the butterfly through lethal ecdysis failures.
- Taxon
- cruciferous plantse1
- Treatment
- Neem ECe0
- Interactor
- Pieris brassicaePieris brassicaet0pest
- Outcome
- mortalitye0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neem EC also induced high mortality, caused by lethal failures of larval-larval and larval-pupal ecdysis”
t0“Pieris brassicae L. (Lepidoptera, Pieridae).”
e1“cruciferous plants”
Claim · model-written summary
Larval and prepupal mortality was significantly higher in the test variant.
- Taxon
- cruciferous plantse1
- Treatment
- test variante0
- Interactor
- Pieris brassicaePieris brassicaet0pest
- Outcome
- mortality of larvae and prepupaee0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mortality of larvae and prepupae in the test variant was significantly higher than in the control”
t0“Pieris brassicae L. (Lepidoptera, Pieridae).”
e1“cruciferous plants”
Claim · model-written summary
The treated variant yielded fewer pupae than the control.
- Taxon
- cruciferous plantse1
- Treatment
- test variante0
- Interactor
- Pieris brassicaePieris brassicaet0pest
- Outcome
- pupaee0
- Direction
- fewere0
- Comparator
- the control variante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Considerably fewer pupae were gained in the test variant than in the control variant”
t0“Pieris brassicae L. (Lepidoptera, Pieridae).”
e1“cruciferous plants”
Claim · model-written summary
Pupae from larvae on control plants were heavier than pupae from treated plants.
- Taxon
- cruciferous plantse1
- Treatment
- treated plantse0
- Interactor
- Pieris brassicaePieris brassicaet0pest
- Outcome
- pupae of larvaee0
- Direction
- heaviere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pupae of larvae that had been feeding on the control were significantly heavier than those of the larvae feeding on the treated plants”
t0“Pieris brassicae L. (Lepidoptera, Pieridae).”
e1“cruciferous plants”
Claim · model-written summary
Neem EC showed toxic, antifeedant and growth regulatory effects on larvae.
- Taxon
- cruciferous plantse1
- Treatment
- Neem ECe0
- Interactor
- P. brassicaePieris brassicaee0pest
- Outcome
- toxic and antifeedant/deterrent effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neem EC had both toxic and antifeedant/deterrent effects but also acted as a growth regulator for P. brassicae larvae”
t0“Pieris brassicae L. (Lepidoptera, Pieridae).”
e1“cruciferous plants”
The same questions in other papers
Brassica oleracea var. capitata · Pieris brassicae · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- positive
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.