Abstract
The South American tomato leaf miner (TLM), Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is an important pest of tomato, potato and other solanaceous species of economic relevance. Pest management of TLM based on the use of conventional insecticides can be problematic due to various causes, among them, the reduced economical profits from high insecticide costs, the destruction of natural enemies’ populations, the presence of insecticide residues on tomato fruits and the rapid development of insecticide resistance, especially when high levels of infestation are reached. The search for less-persistent active compounds would benefit horticultural production, as well as the environment and consumers. In the current study, we evaluated the toxicity of a hexane extract at different concentrations obtained from the chinaberry tree Melia azedarach L. (MA) fresh fruits, on TLM eggs, 2nd instar larvae and pupae by means of contact tests in the laboratory. Results indicated that with increasing concentrations, mortality of eggs, larvae and pupae also increased. Analysis of probit data showed that LC50 for MA extract in TLM eggs, 2nd instar larvae and pupae were 948.93, 346.72 and 1.75 μl/ml, respectively. We conclude that this extract has potential for controlling T. absoluta but further ecotoxicological studies should be carried out to conclude on its safety in other organisms and the environment.
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Claims 5
Claim · model-written summary
Mortality of tomato leafminer eggs, larvae and pupae increased with extract concentration.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- a hexane extract at different concentrations obtained from the chinaberry tree Melia azedarach L. (MA) fresh fruitse2
- Interactor
- Tuta absoluta
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Tuta absolutae1pest - Outcome
- mortality of eggs, larvae and pupaee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Results indicated that with increasing concentrations, mortality of eggs, larvae and pupae also increased.”
e1“The South American tomato leaf miner (TLM), Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is an important pest of tomato”
e2“a hexane extract at different concentrations obtained from the chinaberry tree Melia azedarach L. (MA) fresh fruits”
Claim · model-written summary
The extract LC50 in leafminer eggs was 948.93 μl/ml.
- Taxon
- tomatoSolanum lycopersicume2
- Interactor
- Tuta absolutaTuta absolutae1pest
- Outcome
- LC50 for MA extract in TLM eggse0
- Value
- 948.93, 346.72 and 1.75 μl/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LC50 for MA extract in TLM eggs, 2nd instar larvae and pupae were 948.93, 346.72 and 1.75 μl/ml, respectively.”
e1“Tuta absoluta (Meyrick)”
e2“pest of tomato”
Claim · model-written summary
The extract LC50 in second instar larvae was 346.72 μl/ml.
- Taxon
- tomatoSolanum lycopersicume2
- Interactor
- Tuta absolutaTuta absolutae1pest
- Outcome
- LC50 for MA extract in TLM eggs, 2nd instar larvae and pupaee0
- Value
- 346.72 and 1.75 μl/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LC50 for MA extract in TLM eggs, 2nd instar larvae and pupae were 948.93, 346.72 and 1.75 μl/ml, respectively.”
e1“Tuta absoluta (Meyrick)”
e2“pest of tomato”
Claim · model-written summary
The extract LC50 in leafminer pupae was 1.75 μl/ml.
- Taxon
- tomatoSolanum lycopersicume2
- Interactor
- Tuta absolutaTuta absolutae1pest
- Outcome
- LC50 for MA extract in TLM eggs, 2nd instar larvae and pupaee0
- Value
- 1.75 μl/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LC50 for MA extract in TLM eggs, 2nd instar larvae and pupae were 948.93, 346.72 and 1.75 μl/ml, respectively.”
e1“Tuta absoluta (Meyrick)”
e2“pest of tomato”
Claim · model-written summary
The authors conclude the extract has potential to control T. absoluta, pending ecotoxicological studies.
- Taxon
- tomatoSolanum lycopersicume1
- Interactor
- T. absolutaTuta absolutae0pest
- Outcome
- potential for controlling T. absolutae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We conclude that this extract has potential for controlling T. absoluta but further ecotoxicological studies should be carried out to conclude on its safety in other organisms and the environment.”
e1“pest of tomato”
The same questions in other papers
Melia azedarach · Tuta absoluta · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
botanical · Tuta absoluta · Solanum lycopersicum (tomato)Positive and negative results
20 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- negative
19 papers more in this group
See all 23 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.