Sitona hispidulus 3 claims

species · family Curculionidae · animal · NCBI Taxonomy ↗

Common name: clover root weevil — Also written in claims: clover root weevil — NCBI synonyms: Sitona hispidula

Sitona hispidulusgbohne from Berlin, Germany · CC BY-SA 2.0 · Wikimedia Commons ↗

3 claims

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Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Moist soil significantly enhanced root weevil larval numbers recovered per plot.

Taxon: clover root weevilSitona hispiduluse0
Treatment: moist soil conditionse0
Interactor: White cloverTrifolium repense0host
Outcome: clover root weevil (CRW) larval numbers recovered per plote0
Direction: enhancede0

Not reportedComparator

Verbatim

e0
“White clover growth was significantly enhanced by moist soil conditions, as were clover root weevil (CRW) larval numbers recovered per plot.”
✓ located verbatim in the source · abstract, characters 366–506

Title

Factors affecting clover root weevil ( Sitona lepidus ) numbers and clover production

J. P. J. Eerens; S. Hardwick New Zealand Journal of Agricultural Research 2003. doi:10.1080/00288233.2003.9513558

Other claims from this paper (11)

Intervention effect Moist soil significantly enhanced white clover growth.
Observation Under dry soil conditions fewer than 1% of root weevil larvae developed from eggs applied at 4000/m 2.
Observation Dry soil dominated effects attributable to other treatments.
Observation More root weevil larvae, about 10.5%, developed in moist soil.
Intervention effect Clover tolerated larvae in moist soil without significant shoot production losses.
Intervention effect Root weevil larvae significantly lowered clover shoot/root ratio by 50% on average.
Intervention effect Mineral soil increased clover dry matter production significantly.
Intervention effect Nitrogen application significantly increased clover dry matter production.
Intervention effect Challenge produced significantly more clover dry matter than Prop.
Intervention effect Cutting regime had a minor influence on clover production at P < 0.10.
Intervention effect The influence of Olsen-P level on clover production was not significant.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Under dry soil conditions fewer than 1% of root weevil larvae developed from eggs applied at 4000/m 2.

Taxon: clover root weevilSitona hispiduluse1
Treatment: dry soil conditionse0
Outcome: CRW larvae developede0
Direction: Fewe0
Value: <1%e0
Qualifier: applied at 4000/m 2e0

Verbatim

e0
“Few (<1%) CRW larvae developed from the eggs (applied at 4000/m 2 ) under dry soil conditions.”
✓ located verbatim in the source · abstract, characters 507–601

e1
“clover root weevil (CRW)”
✓ located verbatim in the source · abstract, characters 447–471

Title

Factors affecting clover root weevil ( Sitona lepidus ) numbers and clover production

J. P. J. Eerens; S. Hardwick New Zealand Journal of Agricultural Research 2003. doi:10.1080/00288233.2003.9513558

Other claims from this paper (11)

Intervention effect Moist soil significantly enhanced white clover growth.
Intervention effect Moist soil significantly enhanced root weevil larval numbers recovered per plot.
Observation Dry soil dominated effects attributable to other treatments.
Observation More root weevil larvae, about 10.5%, developed in moist soil.
Intervention effect Clover tolerated larvae in moist soil without significant shoot production losses.
Intervention effect Root weevil larvae significantly lowered clover shoot/root ratio by 50% on average.
Intervention effect Mineral soil increased clover dry matter production significantly.
Intervention effect Nitrogen application significantly increased clover dry matter production.
Intervention effect Challenge produced significantly more clover dry matter than Prop.
Intervention effect Cutting regime had a minor influence on clover production at P < 0.10.
Intervention effect The influence of Olsen-P level on clover production was not significant.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

More root weevil larvae, about 10.5%, developed in moist soil.

Taxon: clover root weevilSitona hispiduluse1
Treatment: moist soil conditionse0
Outcome: CRW larvae developede0
Direction: Moree0
Value: c. 10.5%e0

Verbatim

e0
“More (c. 10.5%) CRW larvae developed under moist soil conditions”
✓ located verbatim in the source · abstract, characters 689–753

e1
“clover root weevil (CRW)”
✓ located verbatim in the source · abstract, characters 447–471

Title

Factors affecting clover root weevil ( Sitona lepidus ) numbers and clover production

J. P. J. Eerens; S. Hardwick New Zealand Journal of Agricultural Research 2003. doi:10.1080/00288233.2003.9513558

Other claims from this paper (11)

Intervention effect Moist soil significantly enhanced white clover growth.
Intervention effect Moist soil significantly enhanced root weevil larval numbers recovered per plot.
Observation Under dry soil conditions fewer than 1% of root weevil larvae developed from eggs applied at 4000/m 2.
Observation Dry soil dominated effects attributable to other treatments.
Intervention effect Clover tolerated larvae in moist soil without significant shoot production losses.
Intervention effect Root weevil larvae significantly lowered clover shoot/root ratio by 50% on average.
Intervention effect Mineral soil increased clover dry matter production significantly.
Intervention effect Nitrogen application significantly increased clover dry matter production.
Intervention effect Challenge produced significantly more clover dry matter than Prop.
Intervention effect Cutting regime had a minor influence on clover production at P < 0.10.
Intervention effect The influence of Olsen-P level on clover production was not significant.