Abstract
The potato tuber moth (PTM), Phthorimaea operculella Zeller (Lepidoptera: Gelechiidae), is an important pest of potato and other solanaceous plants. It is cosmopolite and oligophage that exists in most countries where potatoes are grown. Because of chemical treatment adverse effects, there is a necessity to find safe alternatives to synthetic insecticides. So, medicinal plants are promising since they are safe, inexpensive and effective. In this direction, potato tubers were dipped in 1 ml of 5% methanolic extracts of fumitory, licorice, lavender and oregano. The percentage of first larval penetration to tubers and oviposition-preference of mentioned medicinal plants was investigated on PTM. Subsequently, fumigant toxicity of essential oils of basil, european pennyroyal, lavender, mint and savory were investigated on P. operculella. Treated potato tubers by methanolic extract of lavender elicited the lowest percentage (19.3) of first larval penetration. Studying of oviposition-preference demonstrated that the largest number of eggs were laid on control and fumitory with 28 and 10 eggs after three days, respectively. Probit analysis of essential oils showed that the most effective oil was savory which exhibited LC50 value on adults of PTM equivalent to 0.048 µL/L air.
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Claims 4
Claim · model-written summary
Lavender methanolic extract gave the lowest first-larval tuber penetration, 19.3%.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- methanolic extract of lavendere0
- Interactor
- Phthorimaea operculella
Phthorimaea operculellat0pest - Outcome
- first larval penetratione0
- Direction
- loweste0
- Value
- 19.3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treated potato tubers by methanolic extract of lavender elicited the lowest percentage (19.3) of first larval penetration”
t0“Phthorimaea operculella”
Claim · model-written summary
Control tubers had 28 eggs after three days, the largest oviposition count.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- Phthorimaea operculellaPhthorimaea operculellat0pest
- Outcome
- number of eggse0
- Value
- 28e0
- Qualifier
- after three dayse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“largest number of eggs were laid on control and fumitory with 28 and 10 eggs after three days, respectively”
t0“potato tuber moth, Phthorimaea operculella”
Claim · model-written summary
Fumitory treated tubers had 10 eggs after three days.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fumitorye0
- Interactor
- Phthorimaea operculellaPhthorimaea operculellat0pest
- Outcome
- number of eggse0
- Value
- 10 eggse0
- Qualifier
- after three dayse0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“largest number of eggs were laid on control and fumitory with 28 and 10 eggs after three days, respectively”
t0“potato tuber moth, Phthorimaea operculella”
Claim · model-written summary
Savory oil was the most effective fumigant against adult potato tuber moth, with LC50 of 0.048 µL/L air.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- savorye0
- Interactor
- Phthorimaea operculellaPhthorimaea operculellat0pest
- Outcome
- LC50 value on adults of PTMe0
- Direction
- most effectivee0
- Value
- 0.048 µL/L aire0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most effective oil was savory which exhibited LC50 value on adults of PTM equivalent to 0.048 µL/L air”
t0“potato tuber moth, Phthorimaea operculella”
The same questions in other papers
botanical · Phthorimaea operculella · Solanum tuberosum (potato)Positive and negative results
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