Abstract
Summary Although the effects of cold stratification on the release of physiological dormancy in seeds have been studied extensively, knowledge of the role of soil moisture content on seed dormancy release during cold stratification is limited. Our study determined seed dormancy characteristics and the effect of soil moisture content on seed dormancy breakage during cold stratification in the five common weed species Amaranthus retroflexus , Chenopodium album , Chenopodium hybridum , Plantago lanceolata and Setaria glauca . Seeds of all five species were dormant at the time of harvest and their germination response to light and temperature varied. Soil moisture content had a significant effect on seed dormancy release of all species except P. lanceolata . Germination percentage of A. retroflexus , C. album , C. hybridum increased and then decreased as soil moisture content increased, regardless of germination test temperature. The optimal soil moisture content and seed moisture content for dormancy breakage of A. retroflexus , C. album , C. hybridum were 8%, 12%, 8% and 22.0%, 37.7%, 25.7% respectively. Dry storage (after‐ripening) significantly increased germination of S. glauca . Moreover, increasing soil moisture content first slowed and then increased dormancy breakage in S. glauca . These results suggest that data on soil moisture content should be incorporated into models that predict weed seed dormancy breakage and timing of seedling emergence as well as those for weed management.
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Claims 13
Claim · model-written summary
All five species were dormant at harvest.
Verbatim
e0“Seeds of all five species were dormant at the time of harvest”
Claim · model-written summary
Germination responses to light and temperature varied among the species.
Not reportedTaxon
Verbatim
e0“their germination response to light and temperature varied”
Claim · model-written summary
Soil moisture significantly affected dormancy release in all species except P. lanceolata.
- Taxon
- all speciese0
- Treatment
- Soil moisture contente0
- Outcome
- seed dormancy releasee0
- Qualifier
- except P. lanceolatae0
Not reportedDirection
Verbatim
e0“Soil moisture content had a significant effect on seed dormancy release of all species except P. lanceolata”
Claim · model-written summary
Germination of three species rose then fell with increasing soil moisture.
- Taxon
- A. retroflexus , C. album , C. hybridum
Chenopodium album
Amaranthus retroflexus_IMG_1539.jpg?width=60)
Chenopodiastrum hybridume0 - Outcome
- Germination percentagee0
- Direction
- increased and then decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_IMG_1539.jpg?width=500)
Verbatim
e0“Germination percentage of A. retroflexus , C. album , C. hybridum increased and then decreased as soil moisture content increased”
Claim · model-written summary
Optimal soil moisture for A. retroflexus dormancy release was 8%.
- Taxon
- A. retroflexusAmaranthus retroflexuse0
- Outcome
- optimal soil moisture contente0
- Value
- 8%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal soil moisture content and seed moisture content for dormancy breakage of A. retroflexus , C. album , C. hybridum were 8%, 12%, 8% and 22.0%, 37.7%, 25.7% respectively”
Claim · model-written summary
Optimal soil moisture for C. album was 12%.
- Taxon
- C. albumChenopodium albume0
- Outcome
- optimal soil moisture contente0
- Value
- 12%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal soil moisture content and seed moisture content for dormancy breakage of A. retroflexus , C. album , C. hybridum were 8%, 12%, 8% and 22.0%, 37.7%, 25.7% respectively”
Claim · model-written summary
Optimal soil moisture for C. hybridum was 8%.
- Taxon
- C. hybridumChenopodiastrum hybridume0
- Outcome
- optimal soil moisture contente0
- Value
- 8%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal soil moisture content and seed moisture content for dormancy breakage of A. retroflexus , C. album , C. hybridum were 8%, 12%, 8% and 22.0%, 37.7%, 25.7% respectively”
Claim · model-written summary
Optimal seed moisture for A. retroflexus was 22.0%.
- Taxon
- A. retroflexusAmaranthus retroflexuse0
- Outcome
- seed moisture contente0
- Value
- 22.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal soil moisture content and seed moisture content for dormancy breakage of A. retroflexus , C. album , C. hybridum were 8%, 12%, 8% and 22.0%, 37.7%, 25.7% respectively”
Claim · model-written summary
Optimal seed moisture for C. album was 37.7%.
- Taxon
- C. albumChenopodium albume0
- Outcome
- seed moisture contente0
- Value
- 37.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal soil moisture content and seed moisture content for dormancy breakage of A. retroflexus , C. album , C. hybridum were 8%, 12%, 8% and 22.0%, 37.7%, 25.7% respectively”
Claim · model-written summary
Optimal seed moisture for C. hybridum was 25.7%.
- Taxon
- C. hybridumChenopodiastrum hybridume0
- Outcome
- seed moisture contente0
- Value
- 25.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal soil moisture content and seed moisture content for dormancy breakage of A. retroflexus , C. album , C. hybridum were 8%, 12%, 8% and 22.0%, 37.7%, 25.7% respectively”
Claim · model-written summary
Dry storage significantly increased S. glauca germination.
- Taxon
- S. glauca
Cenchrus americanuse0 - Treatment
- Dry storage (after‐ripening)e0
- Outcome
- germinatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry storage (after‐ripening) significantly increased germination of S. glauca”
Claim · model-written summary
Increasing soil moisture first slowed and then increased S. glauca dormancy breakage.
- Taxon
- S. glaucaCenchrus americanuse0
- Outcome
- dormancy breakagee0
- Direction
- slowed and then increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing soil moisture content first slowed and then increased dormancy breakage in S. glauca”
Claim · model-written summary
Models of weed emergence and management should include soil moisture data.
Verbatim
e0“data on soil moisture content should be incorporated into models that predict weed seed dormancy breakage and timing of seedling emergence as well as those for weed management”
The same questions in other papers
storage · growth · Cenchrus americanus (pearl millet)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.