Claim · model-written summary
Midsummer pea aphid populations were very low and closely fit the Poisson series.
- Taxon
- Alfalfa
Medicago sativat0 - Interactor
- pea aphids
Acyrthosiphon pisume0pest - Outcome
- close agreement to the Poisson seriese0
- Comparator
- Poisson seriese0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

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Verbatim
e0“The samples taken in midsummer showed a very low population of pea aphids and a close agreement to the Poisson series”
t0“Alfalfa Fields”
Title
The Spatial Pattern of the Pea Aphid in Alfalfa Fields
H. Y. Forsythe; George G. Gyrisco Journal of Economic Entomology 1963. doi:10.1093/jee/56.1.104
Other claims from this paper (4)
- Method / resource Spring and late-summer aphid counts fit the Poisson series poorly.
- Method / resource Spring, late-summer, and midnight aphid samples generally fit the negative binomial series.
- Method / resource Omitting one or two stems with unusually high aphid counts improved negative binomial fit.
- Association Daily weather extremes and parasitized or alate aphids had little apparent effect on spatial pattern.