Abstract
This research was conducted to evaluate the nematicidal activity of five plant essential oils (rosemary, thyme, mint, garlic and sesame) against Southern root-knot nematode, Meloidogyne incognita race 2. Trial was designed as randomized complete block design with three nematode inoculums densities (0, 1000 and 2000 J2 plant(-1)) and three essential oil volumes (0, 50 and 150 plant mu L(-1)) replicated six times. There were no significant differences between nematode inoculums density and essential oil volumes used. However, all oil treatments suppressed nematode populations and resulted an increase in root mass tissue. Compared with control groups, among the essential oils, thyme (2.82+/-0.47%) and garlic (5.53+/-1.68%) treatments reduced root galling significantly and produced the lowest percent of galls on the plants whereas, rosemary, mint and sesame treatments were less effective in reducing root-galling. Compared with control groups thyme (2.46+/-0.17) and garlic (2.50+/-0.22) yielded also the lowest egg masses. Among five plant essential oils, application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control and be an alternative to the current control methods. However, more studies need to be conducted in the field and greenhouse conditions to see the possible differences because nematodes and essential oils could be influenced by different experimental conditions.
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 7
Claim · model-written summary
All essential oil treatments suppressed Meloidogyne incognita populations on tomato.
- Taxon
- tomato
Solanum lycopersicume2 - Treatment
- oil treatmentse1
- Interactor
- Meloidogyne incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pest - Outcome
- nematode populationse1
- Direction
- suppressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“against Southern root-knot nematode, Meloidogyne incognita race 2”
e1“all oil treatments suppressed nematode populations and resulted an increase in root mass tissue”
e2“application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control”
Claim · model-written summary
Rosemary, mint and sesame oils were less effective than the other oils in reducing root galling on tomato.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- rosemary, mint and sesamee1
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae0pest
- Outcome
- root-gallinge1
- Direction
- less effective in reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“against Southern root-knot nematode, Meloidogyne incognita race 2”
e1“rosemary, mint and sesame treatments were less effective in reducing root-galling”
e2“application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control”
Claim · model-written summary
Thyme yielded the lowest egg masses on tomato compared with control groups (2.46+/-0.17).
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- thymee1
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae0pest
- Outcome
- egg massese1
- Direction
- loweste1
- Value
- 2.46+/-0.17e1
- Comparator
- control groupse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“against Southern root-knot nematode, Meloidogyne incognita race 2”
e1“Compared with control groups thyme (2.46+/-0.17) and garlic (2.50+/-0.22) yielded also the lowest egg masses”
e2“application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control”
Claim · model-written summary
Garlic yielded the lowest egg masses on tomato compared with control groups (2.50+/-0.22).
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- garlice1
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae0pest
- Outcome
- egg massese1
- Direction
- loweste1
- Value
- 2.50+/-0.22e1
- Comparator
- control groupse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“against Southern root-knot nematode, Meloidogyne incognita race 2”
e1“Compared with control groups thyme (2.46+/-0.17) and garlic (2.50+/-0.22) yielded also the lowest egg masses”
e2“application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control”
Claim · model-written summary
Nematode inoculum density and essential oil volume showed no significant differences.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- essential oil volumese1
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae0pest
- Outcome
- differences between nematode inoculums density and essential oil volumese1
- Direction
- no significant differencese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“against Southern root-knot nematode, Meloidogyne incognita race 2”
e1“There were no significant differences between nematode inoculums density and essential oil volumes used”
e2“application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control”
Claim · model-written summary
All oil treatments increased root mass on tomato.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- oil treatmentse0
- Outcome
- root mass tissuee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all oil treatments suppressed nematode populations and resulted an increase in root mass tissue”
e1“application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control”
Claim · model-written summary
Applying 50 mu L plant(-1) of thyme or garlic in tomato production areas is recommended for root nematode control as an alternative to current methods.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- 50 mu L plant(-1) of thyme or garlice0
- Outcome
- root nematode controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of a rate of 50 mu L plant(-1) of thyme or garlic in tomato production areas could give the best results in root nematode control”
The same questions in other papers
Salvia rosmarinus · Meloidogyne incognita · Solanum lycopersicum (tomato)Positive and negative results
1 in the opposite direction
- positive
Sesamum indicum · Meloidogyne incognita · Solanum lycopersicum (tomato)Positive and negative results
6 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →Allium sativum · Meloidogyne incognita · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
4 papers more in this group
See all 8 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.