Claim · model-written summary
April-emerging knapweed seedlings had high survival and most flowered the next season.
Not reportedTaxonMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionValueQualifier
Verbatim
e0“Seedlings emerging in April had a high rate of survival with most plants flowering the following season”
Title
Seed Production and Spring Seedling Establishment of Diffuse and Spotted Knapweed
Roland Schirman Journal of Range Management 1981. doi:10.2307/3898452
Other claims from this paper (5)
- Association Dry years reduce viable seeds per head and annual seed production in diffuse knapweed.
- Association Dry years reduce viable seeds per head and annual seed production in spotted knapweed.
- Association Above-normal precipitation increases knapweed seed production through more heads per flower stem.
- Observation Knapweed seed production was approximately 1,000 times that needed to sustain observed infestation.
- Observation Knapweed seedlings emerging after May 15 had very low survival and almost no flower stems the following season.