Claim · model-written summary
Over 60% of weed seed in the top 19 cm of soil was in the top 1 cm under no-tillage at both sites.
- Taxon
- Weed Seedt0
- Treatment
- no-tillagee1
- Outcome
- weed seede1
- Value
- Over 60%e1
- Setting
- Arlington and Hancock, WIe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorDirectionQualifier
Verbatim
t0“Weed Seed in Soil”
e0“evaluated in three tillage systems at Arlington and Hancock, WI, in 1989 and 1990”
e1“Over 60% of all weed seed in the top 19 cm of soil were found in the top 1 cm in no-tillage at both sites”
Title
Effects of Tillage on Vertical Distribution and Viability of Weed Seed in Soil
Joseph P. Yenish; Jerry D. Doll; Douglas D. Buhler Weed Science 1992. doi:10.1017/s0043174500051869
Other claims from this paper (10)
- Association Weed seed concentration declined logarithmically with increasing depth under no-tillage.
- Observation Under chisel plowing, over 30% of weed seed was in the top 1 cm of soil.
- Association Under chisel plowing, weed seed concentration decreased linearly with depth.
- Observation Moldboard plowing gave a uniform distribution of weed seed in the top 19 cm of soil.
- Intervention effect Preemergence metolachlor plus atrazine decreased weed seed population by 50% compared with no treatment over all tillage systems.
- Intervention effect One year of herbicide plus handweeding did not reduce seed numbers in chisel or moldboard plowing compared with herbicide alone.
- Intervention effect No-tillage with weed-free conditions decreased seed numbers by 40% relative to herbicide alone.
- Intervention effect Common lambsquarters germination was 40% greater under moldboard and chisel plowing than under no-tillage.
- Association Germination was highest for seed taken from 9 to 19 cm deep under moldboard plowing.
- Association Germination was highest for seed taken from 0 to 9 cm deep under chisel plowing.