Abstract
The research was conducted on remnant tallgrass prairie located in Lancaster County, Nebraska in 1990. Plots (5 by 10-m) were not burned or burned on either April 23, May 2, May 14, or May 26, 1990. Leafy spurge stem density and yield and yield of associated herbaceous vegetation were determined in July 1990 to assess response of the grassland community to prescribed burning treatments. Burning in late April through mid-May stimulated leafy spurge stem production. Density of leafy spurge stems in plots burned by mid-May significantly exceeded (P<0.04) the stem density in plots burned at the end of May. Leafy spurge stem density in plots burned the first week in May averaged 84 stems m-2 as compared to only 27 stems m-2 in plots burned at the end of May. Stem density on unburned plots was not different from burned plots, regardless of time of burning. Leafy spurge yield from plots burned the first week in May and unburned plots were greater (P<0.05) than plots burned the end of May. Yield of other vegetation components was not affected by time of burning.
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Claims 7
Claim · model-written summary
Burning from late April through mid-May stimulated leafy spurge stem production.
- Taxon
- leafy spurge
Euphorbia esulat0 - Treatment
- Burning in late April through mid-Maye0
- Outcome
- leafy spurge stem productione0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Burning in late April through mid-May stimulated leafy spurge stem production.”
t0“leafy spurge”
Claim · model-written summary
Leafy spurge stem density was significantly greater in plots burned by mid-May than in plots burned at the end of May.
- Taxon
- leafy spurgeEuphorbia esulat0
- Treatment
- plots burned by mid-Maye0
- Outcome
- Density of leafy spurge stemse0
- Direction
- exceedede0
- Value
- P<0.04e0
- Comparator
- plots burned at the end of Maye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Density of leafy spurge stems in plots burned by mid-May significantly exceeded (P<0.04) the stem density in plots burned at the end of May.”
t0“leafy spurge”
Claim · model-written summary
Leafy spurge stem density averaged 84 stems m-2 after burning in the first week of May, versus 27 stems m-2 after burning at the end of May.
- Taxon
- leafy spurgeEuphorbia esulat0
- Treatment
- plots burned the first week in Maye0
- Outcome
- Leafy spurge stem densitye0
- Direction
- as compared to onlye0
- Value
- 84 stems m-2e0
- Qualifier
- 27 stems m-2e0
- Comparator
- plots burned at the end of Maye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leafy spurge stem density in plots burned the first week in May averaged 84 stems m-2 as compared to only 27 stems m-2 in plots burned at the end of May.”
t0“leafy spurge”
Claim · model-written summary
Unburned plots did not differ from burned plots in leafy spurge stem density at any burn date.
- Taxon
- leafy spurgeEuphorbia esulat0
- Treatment
- burned plotse0
- Outcome
- Stem densitye0
- Direction
- not differente0
- Qualifier
- regardless of time of burninge0
- Comparator
- unburned plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem density on unburned plots was not different from burned plots, regardless of time of burning.”
t0“leafy spurge”
Claim · model-written summary
Leafy spurge yield was greater after burning in the first week of May than after burning at the end of May.
- Taxon
- leafy spurgeEuphorbia esulat0
- Treatment
- plots burned the first week in Maye0
- Outcome
- Leafy spurge yielde0
- Direction
- greatere0
- Comparator
- plots burned the end of Maye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leafy spurge yield from plots burned the first week in May and unburned plots were greater (P<0.05) than plots burned the end of May.”
t0“leafy spurge”
Claim · model-written summary
Leafy spurge yield was greater in unburned plots than plots burned at the end of May.
- Taxon
- leafy spurgeEuphorbia esulat0
- Treatment
- unburned plotse0
- Outcome
- Leafy spurge yielde0
- Direction
- greatere0
- Comparator
- plots burned the end of Maye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leafy spurge yield from plots burned the first week in May and unburned plots were greater (P<0.05) than plots burned the end of May.”
t0“leafy spurge”
Claim · model-written summary
Burn timing did not affect yield of other vegetation components.
- Taxon
- other vegetation componentse0
- Treatment
- time of burninge0
- Outcome
- Yield of other vegetation componentse0
- Direction
- not affectede0
Not reportedComparator
Verbatim
e0“Yield of other vegetation components was not affected by time of burning.”
The same questions in other papers
fire · organism · Euphorbia esula (leafy spurge)Results agree
1 paper in the same direction as this paper
- negative
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.