Abstract
In laboratory experiments, concentrations of 0.4, 0.8, and 1.2% (wt/vol) neem-seed extract inhibited feeding of adult and larva of Colorado potato beetle, Leptinotarsa decemlineata (Say), on treated potato foliage, Solanum tuberosum L. Adult mortality did not exceed 25% in any neem treatment; however, 73% of larvae were dead 72 h after feeding on foliage treated with 1.2% neem extract. Toxicity of neem extract to larvae was enhanced, and feeding of larvae and adults was inhibited to a greater extent by addition of the synergist piperonyl butoxide (PBO) at a ratio of 10:1 (PBO/azadirachtin). In field experiments, spray applications of neem extract significantly reduced numbers of L. decemlineata larvae and adults in treated plots on all sample dates. The effectiveness of neem extract against L. decemlineata was signifcantly improved on two dates by addition of PBO. The 1.2% neem + PBO treatment resulted in low tuber yield, suggesting possible phytotoxic effects.
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Claims 8
Claim · model-written summary
Neem extract at three concentrations inhibited adult and larval feeding on potato foliage.
- Taxon
- potato
Solanum tuberosume7 - Treatment
- 0.4, 0.8, and 1.2% (wt/vol) neem-seed extracte0
- Interactor
- Leptinotarsa decemlineata (Say)
Leptinotarsa decemlineatae0pest - Outcome
- feeding of adult and larva of Colorado potato beetlee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“concentrations of 0.4, 0.8, and 1.2% (wt/vol) neem-seed extract inhibited feeding of adult and larva of Colorado potato beetle, Leptinotarsa decemlineata (Say), on treated potato foliage”
Claim · model-written summary
Adult beetle mortality stayed at or below 25% with all neem treatments.
- Taxon
- potatoSolanum tuberosume7
- Interactor
- Leptinotarsa decemlineata (Say)Leptinotarsa decemlineatae1pest
- Outcome
- Adult mortalitye0
- Direction
- did not exceede0
- Value
- 25%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“Adult mortality did not exceed 25% in any neem treatment”
e1“Colorado potato beetle, Leptinotarsa decemlineata (Say)”
Claim · model-written summary
After 72 hours, 73% of larvae died on foliage treated with 1.2% neem extract.
- Taxon
- potatoSolanum tuberosume7
- Treatment
- 1.2% neem extracte0
- Interactor
- Leptinotarsa decemlineata (Say)Leptinotarsa decemlineatae1pest
- Outcome
- larvae were deade0
- Value
- 73%e0
- Qualifier
- 72 he0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“73% of larvae were dead 72 h after feeding on foliage treated with 1.2% neem extract”
e1“Colorado potato beetle, Leptinotarsa decemlineata (Say)”
Claim · model-written summary
PBO increased neem toxicity to beetle larvae.
- Taxon
- potatoSolanum tuberosume7
- Treatment
- piperonyl butoxide (PBO) at a ratio of 10:1 (PBO/azadirachtin)e0
- Interactor
- Leptinotarsa decemlineata (Say)Leptinotarsa decemlineatae1pest
- Outcome
- Toxicity of neem extract to larvaee0
- Direction
- enhancede0
- Comparator
- neem extracte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“Toxicity of neem extract to larvae was enhanced, and feeding of larvae and adults was inhibited to a greater extent by addition of the synergist piperonyl butoxide (PBO) at a ratio of 10:1 (PBO/azadirachtin)”
e1“Colorado potato beetle, Leptinotarsa decemlineata (Say)”
Claim · model-written summary
PBO further inhibited beetle larva and adult feeding.
- Taxon
- potatoSolanum tuberosume7
- Treatment
- piperonyl butoxide (PBO) at a ratio of 10:1 (PBO/azadirachtin)e0
- Interactor
- Leptinotarsa decemlineata (Say)Leptinotarsa decemlineatae1pest
- Outcome
- feeding of larvae and adultse0
- Direction
- inhibited to a greater extente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“feeding of larvae and adults was inhibited to a greater extent by addition of the synergist piperonyl butoxide (PBO) at a ratio of 10:1 (PBO/azadirachtin)”
e1“Colorado potato beetle, Leptinotarsa decemlineata (Say)”
Claim · model-written summary
Neem sprays significantly reduced beetle larva and adult numbers in field plots.
- Taxon
- potatoSolanum tuberosume7
- Treatment
- spray applications of neem extracte0
- Interactor
- L. decemlineataLeptinotarsa decemlineatae0pest
- Outcome
- numbers of L. decemlineata larvae and adultse0
- Direction
- reducede0
- Setting
- treated plotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“spray applications of neem extract significantly reduced numbers of L. decemlineata larvae and adults in treated plots on all sample dates”
Claim · model-written summary
PBO significantly improved neem efficacy against beetles on two sample dates.
- Taxon
- potatoSolanum tuberosume7
- Treatment
- PBOe0
- Interactor
- L. decemlineataLeptinotarsa decemlineatae0pest
- Outcome
- effectiveness of neem extract against L. decemlineatae0
- Direction
- improvede0
- Qualifier
- on two datese0
- Comparator
- neem extracte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“The effectiveness of neem extract against L. decemlineata was signifcantly improved on two dates by addition of PBO”
Claim · model-written summary
The 1.2% neem plus PBO treatment produced low tuber yield, suggesting phytotoxicity.
- Taxon
- potatoSolanum tuberosume7
- Treatment
- 1.2% neem + PBO treatmente0
- Outcome
- tuber yielde0
- Direction
- lowe0
- Qualifier
- possible phytotoxic effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“potato foliage, Solanum tuberosum L.”
e0“The 1.2% neem + PBO treatment resulted in low tuber yield, suggesting possible phytotoxic effects”
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