Claim · model-written summary
Spring and late-summer aphid counts fit the Poisson series poorly.
- Taxon
- Alfalfa
Medicago sativat0 - Outcome
- very low probability of a greater chi-squaree0
- Comparator
- Poisson seriese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a very low probability of a greater chi-square when the samples taken in the spring and in the late summer were fitted 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 Midsummer pea aphid populations were very low and closely fit the Poisson series.
- 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.