Abstract
Bio-efficacy of Neem Azal was studied against the insecticide-resistant populations of Helicoverpa armigera Hub. The effects of this new botanical neem formulation on larval growth and development were quite significant. The LC50 values for neonate and the second instar larvae were 0.002 and 0.004%, when fed on Neem Azal treated cotton leaves continuously. However, the LC50 values were 0.005, 0.02 and 0.03% for the I, II and III instar larvae of H. armigera when the exposure was limited to 48 h. Also, the neonate and second instar larvae were exposed to different concentrations of azadirachtin and the growth effects were estimated until pupal stage. Of the different concentrations, the highest dose of 0.04% proved to be the most toxic by recording 100 per cent mortality. The mean larval weight was 191.6 g when maintained on treated (200 ppm) leaves as compared to 337.8 g on normal leaves. The reduction in azadirachtin concentration improved the larval and pupal weights considerably. Even, the lowest concentrations, viz., 0.000625 and 0.0003125 per cent showed phagostimulant effects, the larval weights being 245.3 and 249.6 g as against 244.6 g in the control larvae. However, the growth disrupting effects were clearly evident with increasing dosages. Neem Azal, too, affected the pupal weight besides resulting in the formation of deshaped structures by incomplete metamorphosis.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Neem Azal significantly affected larval growth and development.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- botanical neem formulatione0
- Interactor
- Helicoverpa armigera
_gusano_cogollero.png?width=60)
Helicoverpa armigerat0pest - Outcome
- larval growth and developmente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_gusano_cogollero.png?width=500)
Verbatim
e0“The effects of this new botanical neem formulation on larval growth and development were quite significant.”
t0“cotton bollworm, Helicoverpa armigera Hubner”
Claim · model-written summary
Continuous feeding on treated cotton leaves gave neonates an LC50 of 0.002%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Neem Azal treated cotton leavese0
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- LC50 values for neonatee0
- Value
- 0.002e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The LC50 values for neonate and the second instar larvae were 0.002 and 0.004%, when fed on Neem Azal treated cotton leaves continuously.”
t0“Helicoverpa armigera Hubner”
Claim · model-written summary
Continuous feeding on treated cotton leaves gave second instar larvae an LC50 of 0.004%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Neem Azal treated cotton leavese0
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- LC50 values for neonate and the second instar larvaee0
- Value
- 0.004%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The LC50 values for neonate and the second instar larvae were 0.002 and 0.004%, when fed on Neem Azal treated cotton leaves continuously.”
t0“Helicoverpa armigera Hubner”
Claim · model-written summary
The highest azadirachtin dose caused complete larval mortality.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 0.04%e0
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- mortalitye0
- Direction
- most toxice0
- Value
- 100 per cente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest dose of 0.04% proved to be the most toxic by recording 100 per cent mortality.”
t0“cotton bollworm, Helicoverpa armigera Hubner”
The same questions in other papers
Azadirachta indica · Helicoverpa armigera · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- positive
- positive
botanical · Helicoverpa armigera · Gossypium hirsutum (cotton)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 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.