Abstract
Root-knot nematode (Meloidogyne spp.) is a pest of tomato Solanum lycopersicum (L.), causing reduction in yield and quality. The use of natural plant products as biopesticides in the prevention and control of pests and diseases has been increasing. Nematicidal activity of "Black plum Syzygium cumini, leaf aqueous, ethanol and methanol extracts were investigated for managing the population of Meloidogyne javanica, in tomato. In laboratory conditions second-stage juveniles ( J2) mortality was recorded after 24, 48 and 72 h of incubation in concentrations of 0.25, 0.5 or 1%. Maximum mortality was achieved with ethanol extracts followed by aqueous and methanol extracts. In the greenhouse, leaf extracts at 60 days after inoculation produced reduction in root galling, egg masses, and nematode populations in plants in treated containers compared to untreated plants (control) with values increasing as time and concentration increased. During sixty days of treatment, no significant effect was recorded in plant height and shoot weight for extracts and concentration. Extracts of S. cumini may have potential for controlling M. javanica on tomato.
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Claims 5
Claim · model-written summary
Ethanol extract caused the greatest juvenile nematode mortality, followed by aqueous and methanol extracts.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- ethanol extractse0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pest
- Outcome
- mortalitye0
- Direction
- Maximume0
- Comparator
- aqueous and methanol extractse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum mortality was achieved with ethanol extracts followed by aqueous and methanol extracts.”
t0“Meloidogyne javanica in Tomato”
Claim · model-written summary
Leaf extracts reduced tomato root galling, egg masses, and nematode populations relative to untreated plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- leaf extractse0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pest
- Outcome
- root galling, egg masses, and nematode populationse0
- Direction
- reductione0
- Comparator
- untreated plants (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf extracts at 60 days after inoculation produced reduction in root galling, egg masses, and nematode populations in plants in treated containers compared to untreated plants (control) with values increasing as time and concentration increased.”
t0“Meloidogyne javanica in Tomato”
Claim · model-written summary
The magnitude of extract effects increased with treatment time and concentration.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- time and concentratione0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pest
- Outcome
- valuese0
- Direction
- increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with values increasing as time and concentration increased.”
t0“Meloidogyne javanica in Tomato”
Claim · model-written summary
Extract treatment had no significant effect on plant height or shoot weight during sixty days.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- extracts and concentratione0
- Outcome
- plant height and shoot weighte0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During sixty days of treatment, no significant effect was recorded in plant height and shoot weight for extracts and concentration.”
t0“in Tomato”
Claim · model-written summary
Syzygium cumini extracts may have potential to control Meloidogyne javanica on tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Interactor
- M. javanicaMeloidogyne javanicae0pest
- Outcome
- controlling M. javanicae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extracts of S. cumini may have potential for controlling M. javanica on tomato.”
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