Abstract
Root-knot nematode, Meloidogyne hapla remains a major limiting factor to obtain the estimated yield and quality of carrots in many countries. Effective use of nematode antagonistic bio-agents is a potentially important component of the eco-friendly agro-farming. The effect of seed treatment (ST) with liquid Pseudomonas fluorescens at 100 ml/kg seeds and soil drenching (SD) with Purpureocillium lilacinum at 5 l/ha, singly and jointly, was studied to minimise the damage caused by M. hapla in carrot plants under field conditions. The concomitant application of P. fluorescens ST + P. lilacinum SD reduced 70% of second stage juvenile (J2) population in soil, 71% of female population in root and 74% of egg numbers in roots. The carrot plants from P. fluorescens ST + P. lilacinum SD plots were 36% taller with 39% more leafs and 30% longer leaves than untreated plants. The yield was also 29% higher in concomitant application. There was no significant difference in the root colonisation of P. fluorescens and P. lilacinum in solo and combined treatments. It concludes that the concomitant application of P. fluorescens ST and P. lilacinum SD is more effective to suppress M. hapla infection and enhance the yield of carrot.
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 8
Claim · model-written summary
The combined P. fluorescens seed treatment and P. lilacinum soil drench reduced the second stage juvenile population of M. hapla in soil by 70%.
- Taxon
- carrot
Daucus carotat0 - Treatment
- P. fluorescens ST + P. lilacinum SDe0
- Interactor
- Meloidogyne hapla
Meloidogyne haplat1pathogen - Second interactor
- P. lilacinum
Purpureocillium lilacinume0biocontrol_agent - Outcome
- second stage juvenile (J2) population in soile1
- Direction
- reducede0
- Value
- 70%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concomitant application of P. fluorescens ST + P. lilacinum SD reduced”
e1“70% of second stage juvenile (J2) population in soil”
t0“carrot”
t1“Meloidogyne hapla”
Claim · model-written summary
The combined application reduced the M. hapla female population in carrot roots by 71%.
- Taxon
- carrotDaucus carotat0
- Treatment
- P. fluorescens ST + P. lilacinum SDe0
- Interactor
- Meloidogyne haplaMeloidogyne haplat1pathogen
- Second interactor
- P. lilacinumPurpureocillium lilacinume0biocontrol_agent
- Outcome
- female population in roote1
- Direction
- reducede0
- Value
- 71%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concomitant application of P. fluorescens ST + P. lilacinum SD reduced”
e1“71% of female population in root”
t0“carrot”
t1“Meloidogyne hapla”
Claim · model-written summary
The combined application reduced M. hapla egg numbers in carrot roots by 74%.
- Taxon
- carrotDaucus carotat0
- Treatment
- P. fluorescens ST + P. lilacinum SDe0
- Interactor
- Meloidogyne haplaMeloidogyne haplat1pathogen
- Second interactor
- P. lilacinumPurpureocillium lilacinume0biocontrol_agent
- Outcome
- egg numbers in rootse1
- Direction
- reducede0
- Value
- 74%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concomitant application of P. fluorescens ST + P. lilacinum SD reduced”
e1“74% of egg numbers in roots”
t0“carrot”
t1“Meloidogyne hapla”
Claim · model-written summary
Carrot plants from the combined treatment plots were 36% taller than untreated plants.
- Taxon
- carrotDaucus carotae0
- Treatment
- P. fluorescens ST + P. lilacinum SDe0
- Interactor
- Meloidogyne haplaMeloidogyne haplat1pathogen
- Second interactor
- P. lilacinumPurpureocillium lilacinume0biocontrol_agent
- Outcome
- tallere1
- Direction
- tallere1
- Value
- 36%e1
- Comparator
- untreated plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The carrot plants from P. fluorescens ST + P. lilacinum SD plots”
e1“36% taller”
e2“untreated plants”
t1“Meloidogyne hapla”
Claim · model-written summary
Carrot plants from the combined treatment plots had 39% more leaves than untreated plants.
- Taxon
- carrotDaucus carotae0
- Treatment
- P. fluorescens ST + P. lilacinum SDe0
- Interactor
- Meloidogyne haplaMeloidogyne haplat1pathogen
- Second interactor
- P. lilacinumPurpureocillium lilacinume0biocontrol_agent
- Outcome
- leafse1
- Direction
- moree1
- Value
- 39%e1
- Comparator
- untreated plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The carrot plants from P. fluorescens ST + P. lilacinum SD plots”
e1“39% more leafs”
e2“untreated plants”
t1“Meloidogyne hapla”
Claim · model-written summary
Carrot plants from the combined treatment plots had 30% longer leaves than untreated plants.
- Taxon
- carrotDaucus carotae0
- Treatment
- P. fluorescens ST + P. lilacinum SDe0
- Interactor
- Meloidogyne haplaMeloidogyne haplat1pathogen
- Second interactor
- P. lilacinumPurpureocillium lilacinume0biocontrol_agent
- Outcome
- longer leavese1
- Direction
- longere1
- Value
- 30%e1
- Comparator
- untreated plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The carrot plants from P. fluorescens ST + P. lilacinum SD plots”
e1“30% longer leaves than untreated plants”
t1“Meloidogyne hapla”
Claim · model-written summary
Carrot yield was 29% higher with the concomitant application.
- Taxon
- carrotDaucus carotat0
- Treatment
- concomitant applicatione0
- Interactor
- Meloidogyne haplaMeloidogyne haplat1pathogen
- Outcome
- yielde0
- Direction
- highere0
- Value
- 29%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield was also 29% higher in concomitant application”
t0“carrot”
t1“Meloidogyne hapla”
Claim · model-written summary
Root colonisation by P. fluorescens and P. lilacinum did not differ significantly between single and combined treatments.
- Taxon
- carrotDaucus carotat0
- Treatment
- solo and combined treatmentse0
- Interactor
- P. fluorescens
.JPG?width=60)
Pseudomonas fluorescense0biocontrol_agent - Second interactor
- P. lilacinumPurpureocillium lilacinume0biocontrol_agent
- Outcome
- root colonisatione0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“There was no significant difference in the root colonisation of P. fluorescens and P. lilacinum in solo and combined treatments”
t0“carrot”
The same questions in other papers
Purpureocillium lilacinum · Meloidogyne hapla · Daucus carota (carrot)Results agree
1 paper in the same direction as this paper
- positive
application · Meloidogyne hapla · Daucus carota (carrot)Results agree
2 papers in the same direction as this paper
- 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.