Abstract
Summary- Two commercially available seaweed products, derived from Ascophyllum nodosum (An) and Ecklonia maxima (Em) were evaluated for their potential as control agent for the root-knot nematodes, Meloidogyne chitwoodi and M. hapla, cultured on tomato plants (Solanum lycopersicum cv. Moneymaker). The numbers of nematodes recovered from plants treated with the seaweed product and distilled water (DW) as control did not differ between treatments within the same species, but differed significantly between the two species after one generation. Percentage hatch from egg masses immersed in the seaweed products for 64 days was significantly reduced with 50% and 100% concentrations of An, for M. hapla and M. chitwoodi respectively, but not with Em compared with distilled water (DW) control treatment. When pre-exposed to the test solutions for 6h, there was no difference for both products in the number of second-stage juveniles (J2) that infected the plant in test tubes filled with sandy soil. After 24h pre-exposure time, there was a significant reduction in the number of J2 that infected the plant in the test tubes for the treatment with An compared with DW control for both species of nematode. In pluronic gel bioassay on Petri dish, treatment with Em resulted in an increase in the number of M. chitwoodi J2 that reached a 0.5cm area around the root when the J2 were pre-exposed for 24h in the solution. There was no difference between treatments after 6h pre-exposure time for this species. When M. hapla was the test species, Em resulted in a high number of J2 that reached a 0.5cm area around the root after 6h pre-exposure of J2 to the solution.
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Claims 10
Claim · model-written summary
Seaweed treatment did not change nematode recovery within species.
- Taxon
- tomato plants
Solanum lycopersicume1 - Treatment
- seaweed producte0
- Outcome
- nematodes recoverede0
- Direction
- did not differe0
- Comparator
- distilled water (DW)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nematodes recovered from plants treated with the seaweed product and distilled water (DW) as control did not differ between treatments within the same species”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
Nematode recovery differed significantly between species.
- Taxon
- tomato plantsSolanum lycopersicume1
- Interactor
- Meloidogyne chitwoodi
.jpg?width=60)
Meloidogyne chitwoodie2pest - Outcome
- nematodes recoverede3
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“differed significantly between the two species after one generation”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
e2“Meloidogyne chitwoodi and M. hapla”
e3“nematodes recovered from plants”
Claim · model-written summary
Ascophyllum product at 50% reduced M. hapla hatch.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- 50%e0
- Interactor
- M. hapla
Meloidogyne haplae0pest - Outcome
- Percentage hatche0
- Direction
- reducede0
- Comparator
- distilled water (DW)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentage hatch from egg masses immersed in the seaweed products for 64 days was significantly reduced with 50% and 100% concentrations of An, for M. hapla and M. chitwoodi respectively, but not with Em compared with distilled water (DW) control treatment”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
Ascophyllum product at 100% reduced M. chitwoodi hatch.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- 100% concentrations of Ane0
- Interactor
- M. chitwoodiMeloidogyne chitwoodie0pest
- Outcome
- Percentage hatche0
- Direction
- reducede0
- Comparator
- distilled water (DW)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentage hatch from egg masses immersed in the seaweed products for 64 days was significantly reduced with 50% and 100% concentrations of An, for M. hapla and M. chitwoodi respectively, but not with Em compared with distilled water (DW) control treatment”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
Ecklonia product did not reduce egg hatch.
- Taxon
- tomato plantsSolanum lycopersicume2
- Treatment
- Eme0
- Outcome
- Percentage hatche1
- Direction
- note0
- Comparator
- distilled water (DW)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not with Em compared with distilled water (DW) control treatment”
e1“Percentage hatch from egg masses”
e2“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
At 6h pre-exposure, neither product changed juvenile infection.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- test solutionse0
- Outcome
- number of second-stage juveniles (J2) that infected the plante0
- Direction
- no differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When pre-exposed to the test solutions for 6h, there was no difference for both products in the number of second-stage juveniles (J2) that infected the plant”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
At 24h, Ascophyllum product reduced juvenile infection for both nematodes.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- Ane0
- Outcome
- number of J2 that infected the plante0
- Direction
- reductione0
- Comparator
- DW controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 24h pre-exposure time, there was a significant reduction in the number of J2 that infected the plant in the test tubes for the treatment with An compared with DW control for both species of nematode”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
Ecklonia product increased M. chitwoodi juveniles near roots after 24h.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- Eme0
- Interactor
- M. chitwoodiMeloidogyne chitwoodie0pest
- Outcome
- number of M. chitwoodi J2 that reached a 0.5cm area around the roote0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment with Em resulted in an increase in the number of M. chitwoodi J2 that reached a 0.5cm area around the root when the J2 were pre-exposed for 24h in the solution”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
At 6h, treatments did not differ for M. chitwoodi juveniles near roots.
- Taxon
- tomato plantsSolanum lycopersicume2
- Treatment
- treatmentse0
- Interactor
- M. chitwoodiMeloidogyne chitwoodie1pest
- Outcome
- M. chitwoodi J2 that reached a 0.5cm area around the roote1
- Direction
- no differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference between treatments after 6h pre-exposure time for this species”
e1“M. chitwoodi J2 that reached a 0.5cm area around the root”
e2“tomato plants (Solanum lycopersicum cv. Moneymaker)”
Claim · model-written summary
Ecklonia product produced high M. hapla juvenile numbers near roots after 6h.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- Eme0
- Interactor
- M. haplaMeloidogyne haplae0pest
- Outcome
- high number of J2 that reached a 0.5cm area around the roote0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When M. hapla was the test species, Em resulted in a high number of J2 that reached a 0.5cm area around the root after 6h pre-exposure of J2 to the solution”
e1“tomato plants (Solanum lycopersicum cv. Moneymaker)”
The same questions in other papers
other · Nematoda · Solanum lycopersicum (tomato)Positive and negative results
3 in the opposite direction
- 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.