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“decrease in density”

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1990 2000 ’10

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Organism: Solanum lycopersicum ✕

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Fungal density in soil fell rapidly below acceptable control levels, which limits use of the fungus as a biocontrol agent.

Taxon: tomatoSolanum lycopersicumt0
Outcome: fungal density in soile7
Direction: decreasee7
Qualifier: limit the use of this funguse7

Verbatim

t0
“Relationship between inoculum density of the nematophagous fungus Paeeilomyces Zilacinus and control of Meloidogyne arenaria on tomato (l)”
✓ located verbatim in the source · title, characters 0–138

e7
“a rapid decrease in fungal density in soil below the acceptable control levels, limit the use of this fungus as a bioIogical control agent”
✓ located verbatim in the source · abstract, characters 1098–1236

Title

Relationship between inoculum density of the nematophagous fungus Paeeilomyces Zilacinus and control of Meloidogyne arenaria on tomato (l)

Gomes Carneiro; J. C. Cayrol Revue de nématologie 1991

Other claims from this paper (6)

Association The number of fungal propagules in soil was correlated with the initial dose and decreased over time at higher doses.
Intervention effect The fungus at 10 and 100 g of spores/m2 significantly reduced Meloidogyne arenaria populations in the second and third nematode generations.
Intervention effect Colonized egg masses and non-viable eggs increased with fungal inoculum.
Intervention effect The fungus was most effective at a density of IO6 sporedg of soil.
Observation At the highest control level, only 50 O/O of the eggs were parasitized.
Observation Twenty three percent of the larvae remained, an important residual inoculum potential.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Fallow periods showed the same declining nematode and infestation trends.

Taxon: tomatoSolanum lycopersicume1
Treatment: fallow periodse0
Interactor: Meloidogyne incognitaMeloidogyne incognitae2pest
Outcome: nematode densitye1
Direction: decreasee1

Verbatim

e0
“This trend was also observed during the fallow periods in the other treatments.”
✓ located verbatim in the source · abstract, characters 1130–1209

e1
“The resistant tomato crop showed a sharp decrease in the nematode density at the end of the crop sequence, with a similar synchronous decrease of the endospore infestation.”
✓ located verbatim in the source · abstract, characters 957–1129

e2
“Meloidogyne incognita juveniles (J2)”
✓ located verbatim in the source · abstract, characters 27–63

Title

Population dynamics of Meloidogyne incognita and infestation levels by Pasteuria penetrans in a naturally infested field in Martinique.

Aurelio Ciancio; Patrik Queneherve Nematropica 2000

Other claims from this paper (12)

Association J2 density fluctuated synchronously with endospore infestation.
Observation The first four crop sequences reached 1 000 to 1 500 nematodes per 100 g soil.
Observation The last two crop sequences reached 150 to 250 J2 per 100 g soil.
Observation The peak proportion of nematodes bearing endospores ranged from 50 to 70%.
Intervention effect Resistant tomato reduced nematode density sharply at the end of the sequence.
Intervention effect Endospore infestation also declined synchronously after resistant tomato.
Observation Susceptible crops permitted a sharp rise in J2 density.
Association During rapid J2 population growth, accompanying increases in endospore infestation were interrupted.
Mechanism J2 density progressively declined in the velvetbean sequence because of its reported host status.
Intervention effect J2 density progressively declined in the longer-fallow sequence.
Association Pooled J2 density and endospore infestation had a significant linear correlation.
Observation Pooled mean densities followed a Gutenberg-Richter power-law distribution.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Tomato firmness declined with storage time.

Taxon: tomatoSolanum lycopersicume0
Outcome: firmnesse0
Direction: decreasee0
Setting: ambient conditionse0

Verbatim

e0
“The effect of packaging films on post-harvest life span of tomato in relation to their effect on the activities of potential cell wall hydrolyzing enzymes were investigated. Tomato cv. ‘Punjab Upma’ and ‘Punjab Ratta’ picked at pink stage were placed in open trays, high density polyethylene (HDPE)-, low density polyethylene (LDPE)- and polypropylene (PP)-bags and stored under ambient conditions till their edible stat…” Show full quote
✓ located verbatim in the source · abstract, characters 0–675

Title

Effect of packaging films on cell wall hydrolyzing enzymes in relation to shelf life enhancement of tomatoes stored under ambient conditions

Parampreet Kaur; Surekha Bhatia Applied Biological Research 2017. doi:10.5958/0974-4517.2017.00010.6

Other claims from this paper (10)

Observation Activity of polygalacturonase rose during storage.
Observation Activity of pectin methylesterase rose during storage.
Observation Activity of cellulase rose during storage.
Observation Activity of β-galactosidase rose during storage.
Intervention effect Polythene bags reduced changes relative to open trays.
Association Punjab Ratta showed slower increase in cell wall hydrolase activities than Punjab Upma.
Association Punjab Ratta lost less firmness than Punjab Upma.
Intervention effect LDPE packaging gave the slowest changes in enzymatic activities.
Intervention effect LDPE packaging gave the slowest changes in firmness.
Intervention effect LDPE packaging enhanced shelf life.

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