Claim · model-written summary
Fertilizer, irrigation, defoliation and blossom removal had only temporary or no effects on aphid populations.
- Taxon
- Strawberry
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Fragaria ×ananassat0 - Treatment
- Fertilizers, irrigation, defoliation to stimulate production of new leaves, and removal of blossomse0
- Outcome
- populationse0
- Direction
- temporary effects or nonee0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“Fertilizers, irrigation, defoliation to stimulate production of new leaves, and removal of blossoms had only temporary effects or none on populations”
t0“Strawberry Aphid”
Title
Population Dynamics of the Strawberry Aphid1in Southwestern Washington2
Carl H. Shanks; Brian Finnigan Environmental Entomology 1972. doi:10.1093/ee/1.1.81
Other claims from this paper (9)
- Intervention effect Caged field plants had much larger aphid populations.
- Observation No parasitized aphids were found.
- Observation Aphid populations grew even larger in an unheated greenhouse and remained large through winter.
- Observation Aphid populations became low in field cages.
- Observation Field aphid populations always declined in late summer, including in cages.
- Association Aphid populations tended to correlate with nonreducing sugar concentration in strawberry foliage.
- Mechanism Predators were interpreted as an important factor controlling aphid populations.
- Mechanism Wind and rain were proposed to harm aphids.
- Mechanism Declining leaf nutritional value and rising predator populations were proposed as main causes of the late summer aphid decline.