Paper · 2026 · International Journal of Farm Sciences

Harnessing the biocontrol potential of entomopathogenic nematode, Steinernema species for the management of root-knot nematode, Meloidogyne incognita in tomato (Solanum lycopersicum L)

M Shanmuga Priya; S Prabhu; P Ahiladevi; et al.

6
claims
15
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

Root-knot nematodes (Meloidogyne incognita) are major constraints to tomato production, causing severe yield losses worldwide. The present study evaluated the biocontrol potential of four entomopathogenic nematode (EPN) species: Steinernema carpocapsae, S glasseri, S siamkayai and S feltiae against M incognita under in vitro and pot culture conditions. In in vitro assays, all Steinernema species significantly inhibited egg hatching, with S carpocapsae and S siamkayai showing the highest suppression, comparable to carbofuran. Pot culture experiments revealed that EPN treatments significantly improved plant growth and yield attributes while reducing nematode population, gall number and gall index compared to the untreated control. Among the EPNs, S carpocapsae was the most effective, followed by S siamkayai and S feltiae. The results demonstrate the potential of Steinernema species, particularly S carpocapsae, as eco-friendly alternatives to chemical nematicides for sustainable management of root-knot nematodes in tomato.

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Claims 6

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

All Steinernema species significantly inhibited M. incognita egg hatching in vitro.

Treatment
Steinernema speciese0
Interactor
Meloidogyne incognitaMeloidogyne incognitat1pathogen
Second interactor
Steinernema speciesSteinernemae0biocontrol_agent
Outcome
egg hatchinge0
Direction
inhibitede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Meloidogyne incognita
Meloidogyne incognita · InteractorPhoto by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗
Steinernema
Steinernema · Second interactor · picture of the genus (one of its species)Mirayana M. Barros, Dennis Chang, Dihong Lu, and Adler R. Dillman · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

t0

“tomato (Solanum lycopersicum L)”

✓ located verbatim in the source · title, characters 153–184 · show in text ↑
t1

“Meloidogyne incognita”

✓ located verbatim in the source · title, characters 128–149 · show in text ↑
e0

“all Steinernema species significantly inhibited egg hatching”

✓ located verbatim in the source · abstract, characters 375–435 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

S. carpocapsae and S. siamkayai showed the highest egg hatch suppression, comparable to carbofuran.

Treatment
S carpocapsae and S siamkayaie0
Interactor
Meloidogyne incognitaMeloidogyne incognitat1pathogen
Second interactor
S carpocapsae and S siamkayaiSteinernema carpocapsaeSteinernema siamkayaie0biocontrol_agent
Outcome
suppressione0
Direction
higheste0
Comparator
carbofurane0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Meloidogyne incognita
Meloidogyne incognita · InteractorPhoto by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗
Steinernema carpocapsae
Steinernema carpocapsae · Second interactorMirayana M. Barros, Dennis Chang, Dihong Lu, and Adler R. Dillman · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

t0

“tomato (Solanum lycopersicum L)”

✓ located verbatim in the source · title, characters 153–184 · show in text ↑
t1

“Meloidogyne incognita”

✓ located verbatim in the source · title, characters 128–149 · show in text ↑
e0

“S carpocapsae and S siamkayai showing the highest suppression, comparable to carbofuran”

✓ located verbatim in the source · abstract, characters 442–529 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

EPN treatments improved tomato growth and yield attributes relative to untreated control.

Treatment
EPN treatmentse0
Outcome
plant growth and yield attributese0
Direction
improvede0
Comparator
untreated controle0

Not reportedInteractor

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“tomato (Solanum lycopersicum L)”

✓ located verbatim in the source · title, characters 153–184 · show in text ↑
e0

“EPN treatments significantly improved plant growth and yield attributes while reducing nematode population, gall number and gall index compared to the untreated control”

✓ located verbatim in the source · abstract, characters 569–737 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

EPN treatments reduced nematode population, gall number and gall index relative to untreated control.

Treatment
EPN treatmentse0
Interactor
Meloidogyne incognitaMeloidogyne incognitat1pathogen
Outcome
nematode population, gall number and gall indexe0
Direction
reducinge0
Comparator
untreated controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Meloidogyne incognita
Meloidogyne incognita · InteractorPhoto by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“tomato (Solanum lycopersicum L)”

✓ located verbatim in the source · title, characters 153–184 · show in text ↑
t1

“Meloidogyne incognita”

✓ located verbatim in the source · title, characters 128–149 · show in text ↑
e0

“EPN treatments significantly improved plant growth and yield attributes while reducing nematode population, gall number and gall index compared to the untreated control”

✓ located verbatim in the source · abstract, characters 569–737 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

S. carpocapsae was the most effective EPN, followed by S. siamkayai and S. feltiae.

Interactor
S carpocapsaeSteinernema carpocapsaee0biocontrol_agent
Outcome
most effectivee0
Direction
most effectivee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Steinernema carpocapsae
Steinernema carpocapsae · InteractorMirayana M. Barros, Dennis Chang, Dihong Lu, and Adler R. Dillman · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

t0

“tomato (Solanum lycopersicum L)”

✓ located verbatim in the source · title, characters 153–184 · show in text ↑
e0

“Among the EPNs, S carpocapsae was the most effective, followed by S siamkayai and S feltiae”

✓ located verbatim in the source · abstract, characters 739–830 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Steinernema species, especially S. carpocapsae, are proposed as alternatives to chemical nematicides in tomato.

Interactor
Steinernema speciesSteinernemae0biocontrol_agent
Outcome
eco-friendly alternatives to chemical nematicidese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Steinernema
Steinernema · Interactor · picture of the genus (one of its species)Mirayana M. Barros, Dennis Chang, Dihong Lu, and Adler R. Dillman · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

t0

“tomato (Solanum lycopersicum L)”

✓ located verbatim in the source · title, characters 153–184 · show in text ↑
e0

“potential of Steinernema species, particularly S carpocapsae, as eco-friendly alternatives to chemical nematicides for sustainable management of root-knot nematodes in tomato”

✓ located verbatim in the source · abstract, characters 860–1034 · show in text ↑

biocontrol · Meloidogyne incognita · Solanum lycopersicum (tomato)Positive and negative results

25 papers: 24 positive, 1 negative or no effect

23 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. positive

21 papers more in this group

See all 25 papers →

biocontrol · yield · Solanum lycopersicum (tomato)Positive and negative results

27 papers: 24 positive, 3 negative or no effect

23 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

23 papers more in this group

See all 27 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.