Paper · 2020 · International Journal of Phytopathology

Nematode Population Dynamics after Applications of Plant Extracts and Trichoderma Species as Soil Amendments in Tomato Field

Timothy I. Olabiyi; Samuel O. Akinrinola; Olajumoke E. Ayanda

4
claims
8
verbatim quotes
3
citations
2
research areas
✓
Open access · cc-by

Abstract

Three different plant extracts (Khaya ivorensis, Azadirachta indica and Daniella oleifera) and two Trichoderma species (T. harzianum and T. atroviride), singly and in combination, were assessed on nematode population changes and also in the control of plant parasitic nematodes on tomato under field condition during 2018 and 2019 planting seasons. During each trial, plant parasitic nematodes encountered in the field were Meloidogyne, Pratylenchus, Xiphinema and Helicotylenchus species. The experiment was a randomized complete block design with 4 x 3 factorial scheme and five replications. Factor A being plant extracts (Khaya ivorensis, Azadirachta indica, Daniella oleifera) and control, and factor B being bio-control agents (Trichoderma harzianum, T. atroviride) and control, resulting in 12 treatments. Significant reductions were observed on the population of the plant parasitic nematodes at all treatment levels with neem plant extract, in combination with either T. harzianum or T. atroviride resulted in the greatest significant decrease. Applications of different plant extracts and Trichoderma species, singly and in combination, enhanced the growth and yield of tomato infected with parasitic nematodes.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 4

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Neem plant extract reduced plant parasitic nematode populations at all treatment levels in tomato field trials.

Treatment
neem plant extracte1
Interactor
plant parasitic nematodese1pest
Outcome
population of the plant parasitic nematodese1
Direction
reductionse1
Setting
field conditione0

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 ↗

Verbatim

e0

“in the control of plant parasitic nematodes on tomato under field condition”

✓ located verbatim in the source · abstract, characters 234–309 · show in text ↑
e1

“Significant reductions were observed on the population of the plant parasitic nematodes at all treatment levels with neem plant extract, in combination with either T. harzianum or T. atroviride resulted in the greatest significant decrease”

✓ located verbatim in the source · abstract, characters 813–1052 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Neem plant extract combined with either T. harzianum or T. atroviride gave the greatest significant decrease in plant parasitic nematode populations.

Treatment
neem plant extract, in combination with either T. harzianum or T. atroviridee1
Interactor
plant parasitic nematodese1pest
Second interactor
T. harzianumTrichoderma harzianume1biocontrol_agent
Outcome
population of the plant parasitic nematodese1
Direction
greatest significant decreasee1

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 ↗
Trichoderma harzianum
Trichoderma harzianum · Second interactorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“in the control of plant parasitic nematodes on tomato under field condition”

✓ located verbatim in the source · abstract, characters 234–309 · show in text ↑
e1

“Significant reductions were observed on the population of the plant parasitic nematodes at all treatment levels with neem plant extract, in combination with either T. harzianum or T. atroviride resulted in the greatest significant decrease”

✓ located verbatim in the source · abstract, characters 813–1052 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Plant extracts and Trichoderma species, singly and in combination, enhanced growth and yield of tomato infected with parasitic nematodes.

Treatment
Applications of different plant extracts and Trichoderma species, singly and in combinatione2
Interactor
parasitic nematodese2pest
Outcome
growth and yielde2
Direction
enhancede2

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 ↗

Verbatim

e0

“in the control of plant parasitic nematodes on tomato under field condition”

✓ located verbatim in the source · abstract, characters 234–309 · show in text ↑
e2

“Applications of different plant extracts and Trichoderma species, singly and in combination, enhanced the growth and yield of tomato infected with parasitic nematodes”

✓ located verbatim in the source · abstract, characters 1054–1220 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Plant parasitic nematodes encountered in the field were Meloidogyne, Pratylenchus, Xiphinema and Helicotylenchus species.

Interactor
Meloidogyne, Pratylenchus, Xiphinema and Helicotylenchus speciesPratylenchusXiphinemaMeloidogyneHelicotylenchuse3pest
Outcome
plant parasitic nematodes encountered in the fielde3
Setting
in the fielde3

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 ↗
Pratylenchus
Pratylenchus · Interactor · picture of the genus (one of its species)USDA ARS · Public domain · Wikimedia Commons ↗
Xiphinema
Xiphinema · Interactor · picture of the genus (one of its species)Wperazap · CC BY-SA 4.0 · Wikimedia Commons ↗
Meloidogyne
Meloidogyne · Interactor · picture of the genus (one of its species)Photo by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“in the control of plant parasitic nematodes on tomato under field condition”

✓ located verbatim in the source · abstract, characters 234–309 · show in text ↑
e3

“During each trial, plant parasitic nematodes encountered in the field were Meloidogyne, Pratylenchus, Xiphinema and Helicotylenchus species”

✓ located verbatim in the source · abstract, characters 349–488 · show in text ↑

Trichoderma · yield · Solanum lycopersicum (tomato)Results differ

23 papers: 22 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

19 papers more in this group

See all 23 papers →

Trichoderma harzianum · pest · Solanum lycopersicum (tomato)Results agree

15 papers: 15 positive, 0 negative or no effect

14 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

11 papers more in this group

See all 15 papers →

Azadirachta indica · pest · Solanum lycopersicum (tomato)Results agree

21 papers: 21 positive, 0 negative or no effect

20 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

17 papers more in this group

See all 21 papers →

botanical · pest · Solanum lycopersicum (tomato)Positive and negative results

104 papers: 90 positive, 14 negative or no effect

89 papers in the same direction as this paper · 14 in the opposite direction

  1. positive
  2. no effect
  3. negative

100 papers more in this group

See all 104 papers →

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

138 papers: 126 positive, 12 negative or no effect

125 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

134 papers more in this group

See all 138 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.