Claim · model-written summary
Seeding rate (22 vs. 44 kg/ha) had no effect on the production of seeded grass.
- Taxon
- grasse1
- Treatment
- seeding rate (22 kg/ha vs. 44 kg/ha)e1
- Outcome
- production of seeded grasse1
- Direction
- had no effecte1
- Comparator
- 22 kg/hae1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Verbatim
e1“Burning doubled production of seeded grass, but seeding rate (22 kg/ha vs. 44 kg/ha) had no effect”
Title
John F. Lehmkuhl Research Exchange (Washington State University) 2002
Other claims from this paper (13)
- Intervention effect Burning doubled the production of seeded grass compared with no burning.
- Observation Grass biomass peaked at 3 years.
- Observation Grass biomass then declined to negligible levels after its peak.
- Intervention effect Native plant species richness decreased after burning.
- Intervention effect After 5 years, native plant species richness nearly equalled that of unburned areas.
- Intervention effect Seeding rate did not affect native plant species richness.
- Observation Native plant cover increased with time after clear felling regardless of treatment.
- Association In burned areas, seeding reduced native plant cover slightly.
- Observation Exotic species richness and cover were highest in burned areas.
- Observation About 25% of planted western hemlock seedlings died, mostly in the first year.
- Intervention effect Seeding increased western hemlock seedling mortality by 64% in burned areas compared with unseeded burned areas.
- Intervention effect Final seedling height of western hemlock was 4% higher in burned than in unburned areas.
- Intervention effect Seeding rate had no effect on western hemlock seedling height.