Abstract
Little barley is a winter annual grass weed commonly found in pastures and hayfields across the southeastern United States. Its dense growth can delay bermudagrass greenup and is highly undesirable as a forage after flowering. A study was conducted at two sites in Alabama to evaluate the efficacy of glyphosate and nicosulfuron for little barley control, bermudgrass response, and subsequent warm season weedy grass response. Herbicide treatments were applied in mid March just prior to bermudagrass greenup. In general, glyphosate controlled little barley faster than nicosulfuron treatments but all herbicides were effective by six weeks after treatment (WAT). Bermudagrass injury was less than three percent at 6 WAT for all treatments. At 13 WAT, large crabgrass and other weedy grasses were generally released by herbicide treatment but were strongly suppressed by little barley in the untreated plots. Bermudagrass cover did not respond consistently to little barley control but this was more likely a function of summer annual grass competition than herbicide injury.
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Claims 9
Claim · model-written summary
Glyphosate controlled little barley faster than nicosulfuron.
- Taxon
- bermudagrass
Cynodon dactylont0 - Treatment
- glyphosatee0
- Outcome
- controlled little barleye0
- Direction
- fastere0
- Comparator
- nicosulfuron treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, glyphosate controlled little barley faster than nicosulfuron treatments but all herbicides were effective by six weeks after treatment (WAT).”
t0“Little Barley Control with Herbicides in Dormant Bermudagrass Hayfields”
Claim · model-written summary
All herbicides effectively controlled little barley by six weeks after treatment.
- Taxon
- bermudagrassCynodon dactylont0
- Treatment
- all herbicidese0
- Outcome
- little barleye0
- Direction
- effectivee0
- Qualifier
- six weeks after treatment (WAT)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, glyphosate controlled little barley faster than nicosulfuron treatments but all herbicides were effective by six weeks after treatment (WAT).”
t0“Little Barley Control with Herbicides in Dormant Bermudagrass Hayfields”
Claim · model-written summary
Bermudagrass injury was below three percent at six weeks for all treatments.
- Taxon
- BermudagrassCynodon dactylone0
- Outcome
- Bermudagrass injurye0
- Direction
- less thane0
- Value
- three percente0
- Qualifier
- 6 WATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bermudagrass injury was less than three percent at 6 WAT for all treatments.”
Claim · model-written summary
Herbicide treatment generally released large crabgrass at 13 weeks.
- Taxon
- bermudagrassCynodon dactylont0
- Treatment
- herbicide treatmente0
- Outcome
- large crabgrasse0
- Direction
- releasede0
- Qualifier
- 13 WATe0
- Comparator
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 13 WAT, large crabgrass and other weedy grasses were generally released by herbicide treatment but were strongly suppressed by little barley in the untreated plots.”
t0“Dormant Bermudagrass Hayfields”
Claim · model-written summary
Herbicide treatment generally released other weedy grasses at 13 weeks.
- Taxon
- bermudagrassCynodon dactylont0
- Treatment
- herbicide treatmente0
- Outcome
- other weedy grassese0
- Direction
- releasede0
- Qualifier
- 13 WATe0
- Comparator
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 13 WAT, large crabgrass and other weedy grasses were generally released by herbicide treatment but were strongly suppressed by little barley in the untreated plots.”
t0“Dormant Bermudagrass Hayfields”
Claim · model-written summary
Little barley strongly suppressed large crabgrass in untreated plots.
- Taxon
- bermudagrassCynodon dactylont0
- Outcome
- large crabgrasse0
- Direction
- strongly suppressede0
- Setting
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 13 WAT, large crabgrass and other weedy grasses were generally released by herbicide treatment but were strongly suppressed by little barley in the untreated plots.”
t0“Little Barley Control with Herbicides in Dormant Bermudagrass Hayfields”
Claim · model-written summary
Little barley strongly suppressed other weedy grasses in untreated plots.
- Taxon
- bermudagrassCynodon dactylont0
- Outcome
- other weedy grassese0
- Direction
- strongly suppressede0
- Setting
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 13 WAT, large crabgrass and other weedy grasses were generally released by herbicide treatment but were strongly suppressed by little barley in the untreated plots.”
t0“Little Barley Control with Herbicides in Dormant Bermudagrass Hayfields”
Claim · model-written summary
Bermudagrass cover responded inconsistently to little barley control.
- Taxon
- BermudagrassCynodon dactylone0
- Treatment
- little barley controle0
- Outcome
- Bermudagrass covere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bermudagrass cover did not respond consistently to little barley control but this was more likely a function of summer annual grass competition than herbicide injury.”
t0“Little Barley Control with Herbicides in Dormant Bermudagrass Hayfields”
Claim · model-written summary
The authors suggest summer annual grass competition explains inconsistent bermudagrass cover.
- Taxon
- BermudagrassCynodon dactylone0
- Outcome
- Bermudagrass covere0
- Qualifier
- summer annual grass competitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bermudagrass cover did not respond consistently to little barley control but this was more likely a function of summer annual grass competition than herbicide injury.”
t0“Little Barley Control with Herbicides in Dormant Bermudagrass Hayfields”
The same questions in other papers
glyphosate · control · Cynodon dactylon (Bermuda grass)Positive and negative results
10 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
9 papers more in this group
See all 13 papers →herbicide · organism · Cynodon dactylon (Bermuda grass)Positive and negative results
3 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- negative
- no effect
5 papers more in this group
See all 9 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.