Abstract
The efficacy of single and combined application of Trichoderma harzianum and Pseudomonas fluorescens (CHA0) in the controlling of Meloidogyne javanica on tomato plants was evaluated under green house conditions. Seeds of the susceptible tomato cv. Early-Urbana were sown in clean plastic pots containing 1.5 kg steam sterilized soil. Four weeks after planting, the soil of each pot was infested with a suspension of 20 ml/kg soil of T. harzianum (10 6 spores/ ml) and a suspension of 15 ml/kg soil of P. fluorescens (CHA0) (10 8 CFU/ ml). Soil of other pots were infested with the two tested bio-agents together as a combined application. Seven days later, plants in all pots, except the controls, were inoculated with M. javanica at initial population densities of 1, 2 or 4 eggs/ cm 3 soil. Sixty days after nematode inoculation, the parameters of plant growth and nematode reproduction were determined. Results showed that the nematode reproduction factor (Rf) on the plants infected with 1, 2 and 4 eggs/ cm 3 decreased by 58, 63 and 31% after the single application of T. harzianum , 11, 33 and 12% after the single application of P. fluorescens (CHA0) and 43, 55 and 49% after the combined application of the bio-agents, respectively. Combined application of the two bio-agents was found to be the most effective in controlling the higher initial population density of the nematode (4 eggs/ cm 3 ).
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Claims 6
Claim · model-written summary
Trichoderma harzianum reduced nematode reproduction 58% at 1 egg/cm3.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- single application of T. harzianume0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae1pathogen
- Second interactor
- T. harzianum
Trichoderma harzianume0biocontrol_agent - Outcome
- nematode reproduction factor (Rf)e0
- Direction
- decreasede0
- Value
- 58e0
- Qualifier
- 1, 2 and 4 eggs/ cm 3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nematode reproduction factor (Rf) on the plants infected with 1, 2 and 4 eggs/ cm 3 decreased by 58, 63 and 31% after the single application of T. harzianum”
e1“Meloidogyne javanica on tomato plants”
Claim · model-written summary
Trichoderma harzianum reduced nematode reproduction 63% at 2 eggs/cm3.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- single application of T. harzianume0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae1pathogen
- Second interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- nematode reproduction factor (Rf)e2
- Direction
- decreasede0
- Value
- 63e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased by 58, 63 and 31% after the single application of T. harzianum”
e1“Meloidogyne javanica on tomato plants”
e2“nematode reproduction factor (Rf)”
Claim · model-written summary
Trichoderma harzianum reduced nematode reproduction 31% at 4 eggs/cm3.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- single application of T. harzianume0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae1pathogen
- Second interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- nematode reproduction factor (Rf)e2
- Direction
- decreasede0
- Value
- 31%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased by 58, 63 and 31% after the single application of T. harzianum”
e1“Meloidogyne javanica on tomato plants”
e2“nematode reproduction factor (Rf)”
Claim · model-written summary
Pseudomonas fluorescens reduced nematode reproduction by 11%, 33% and 12% at increasing densities.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- single application of P. fluorescens (CHA0)e0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae2pathogen
- Second interactor
- P. fluorescens (CHA0)
.JPG?width=60)
Pseudomonas fluorescense0biocontrol_agent - Outcome
- nematode reproduction factor (Rf)e1
- Direction
- decreasede1
- Value
- 11, 33 and 12%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“11, 33 and 12% after the single application of P. fluorescens (CHA0)”
e1“nematode reproduction factor (Rf) on the plants infected with 1, 2 and 4 eggs/ cm 3 decreased”
e2“Meloidogyne javanica on tomato plants”
Claim · model-written summary
Combined bioagents reduced nematode reproduction by 43%, 55% and 49% at increasing densities.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- combined application of the bio-agentse0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae2pathogen
- Outcome
- nematode reproduction factor (Rf)e1
- Direction
- decreasede1
- Value
- 43, 55 and 49%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“43, 55 and 49% after the combined application of the bio-agents”
e1“nematode reproduction factor (Rf) on the plants infected with 1, 2 and 4 eggs/ cm 3 decreased”
e2“Meloidogyne javanica on tomato plants”
Claim · model-written summary
Combined bioagents were most effective at the highest nematode density.
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- Combined application of the two bio-agentse0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae1pathogen
- Outcome
- controlling the higher initial population density of the nematodee0
- Direction
- most effectivee0
- Value
- 4 eggs/ cm 3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combined application of the two bio-agents was found to be the most effective in controlling the higher initial population density of the nematode (4 eggs/ cm 3 )”
e1“Meloidogyne javanica in Tomato”
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- positive
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5 papers in the same direction as this paper · 2 in the opposite direction
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See all 8 papers →phosphorus · Meloidogyne javanica · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.