Abstract
Root-knot nematodes (Meloidogyne spp.; RKNs) are among the most destructive soil-borne pathogens affecting tomato production. Recently, aggressive species such as M. enterolobii, M. floridensis, and M. haplanaria have been reported in several tomato fields across the southern United States. Host resistance in tomato, effective against commonly prevalent M. incognita, is ineffective against these emerging species, making chemical nematicides the primary management approach. However, studies on the efficacy of chemical nematicides on these emerging RKN species remain limited. This study evaluated the efficacy of four non-fumigant nematicides—fluazaindolizine, fluensulfone, fluopyram, and oxamyl—on the reproduction of these emerging species and M. incognita. Fluensulfone consistently suppressed nematode reproduction by over 90.0% across all species. Fluopyram reduced reproduction by over 50.0% in most species but was less effective against M. enterolobii, with suppression of only 24.3%. Similarly, fluazaindolizine suppressed egg counts by more than 50.0% across all species except M. enterolobii, where it suppressed only 41.1%. Oxamyl suppressed egg counts in M. floridensis and M. incognita by more than 50.0%, but reductions in M. enterolobii and M. haplanaria were lower at 23.2% and 38.7%, respectively. These results highlight species-specific differences in nematicide efficacy and provide a crucial baseline for future research for the management of specific RKN species.
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Claims 6
Claim · model-written summary
Fluensulfone suppressed nematode reproduction by over 90.0% across all species.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Fluensulfonee1
- Outcome
- nematode reproductione1
- Direction
- suppressede1
- Value
- over 90.0%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root-knot nematodes (Meloidogyne spp.; RKNs) are among the most destructive soil-borne pathogens affecting tomato production”
e1“Fluensulfone consistently suppressed nematode reproduction by over 90.0% across all species”
Claim · model-written summary
Fluazaindolizine suppressed egg counts by more than 50.0% across all species except M. enterolobii.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- fluazaindolizinee3
- Outcome
- egg countse3
- Direction
- suppressede3
- Value
- more than 50.0%e3
- Qualifier
- across all species except M. enterolobiie3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root-knot nematodes (Meloidogyne spp.; RKNs) are among the most destructive soil-borne pathogens affecting tomato production”
e3“Similarly, fluazaindolizine suppressed egg counts by more than 50.0% across all species except M. enterolobii, where it suppressed only 41.1%”
Claim · model-written summary
Fluazaindolizine suppressed M. enterolobii egg counts by only 41.1%.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- fluazaindolizinee3
- Interactor
- M. enterolobii
_5384315.jpg?width=60)
Meloidogyne enterolobiie3pathogen - Outcome
- egg countse3
- Direction
- suppressede3
- Value
- 41.1%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_5384315.jpg?width=500)
Verbatim
e0“Root-knot nematodes (Meloidogyne spp.; RKNs) are among the most destructive soil-borne pathogens affecting tomato production”
e3“Similarly, fluazaindolizine suppressed egg counts by more than 50.0% across all species except M. enterolobii, where it suppressed only 41.1%”
Claim · model-written summary
Oxamyl suppressed egg counts of M. floridensis and M. incognita by more than 50.0%.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Oxamyle4
- Interactor
- M. floridensisMeloidogyne floridensise4pathogen
- Second interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae4pathogen - Outcome
- egg countse4
- Direction
- suppressede4
- Value
- more than 50.0%e4
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“Root-knot nematodes (Meloidogyne spp.; RKNs) are among the most destructive soil-borne pathogens affecting tomato production”
e4“Oxamyl suppressed egg counts in M. floridensis and M. incognita by more than 50.0%”
Claim · model-written summary
Oxamyl reduced M. enterolobii reproduction by only 23.2%.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Oxamyle6
- Interactor
- M. enterolobiiMeloidogyne enterolobiie6pathogen
- Outcome
- reductionse6
- Direction
- lowere6
- Value
- 23.2%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root-knot nematodes (Meloidogyne spp.; RKNs) are among the most destructive soil-borne pathogens affecting tomato production”
e6“Oxamyl suppressed egg counts in M. floridensis and M. incognita by more than 50.0%, but reductions in M. enterolobii and M. haplanaria were lower at 23.2% and 38.7%, respectively”
Claim · model-written summary
Oxamyl reduced M. haplanaria reproduction by only 38.7%.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Oxamyle6
- Interactor
- M. haplanaria
.jpg?width=60)
Meloidogyne haplanariae6pathogen - Outcome
- reductionse6
- Direction
- lowere6
- Value
- 38.7%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Root-knot nematodes (Meloidogyne spp.; RKNs) are among the most destructive soil-borne pathogens affecting tomato production”
e6“Oxamyl suppressed egg counts in M. floridensis and M. incognita by more than 50.0%, but reductions in M. enterolobii and M. haplanaria were lower at 23.2% and 38.7%, respectively”
The same questions in other papers
fluazaindolizine · Meloidogyne enterolobii · Solanum lycopersicum (tomato)Positive and negative results
1 in the opposite direction
- positive
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.