Abstract
Dimension herbicide (dithiopyr) was applied to common bermudagrass turf at 90, 60, and 45 days before fall overseeding to measure the efficacy for turf safety and for control of fall germinating POA Annua (PA). Applications were made at 0.25, 0.375, and 0.50 lbs. AI/A on each date. One half of each plot was overseeded, while the other half was not. Percent plot (PA) infestation and percent weed control was more greatly affected by the process of overseeding, than that of the herbicide applications alone. When not overseeded, the bermudagrass turf had a maximum of 45% PA control in November, which decreased dramatically to little or no control from January to March 2000. With the inclusion of ryegrass overseed, the high rate (0.50 lbs. AI/A) applied closest to the overseeding (45 DBOS) provided between 79-82% PA control over the length of the test. Actual infestation levels among non-chemical receiving control plots showed a 3X increased level in PA suppression due to overseeding, when compared to the non-overseeded, non-chemical controls. Dimension herbicide alone had little effect for PA control. When combined with overseeding, the 0.50 lb. AI/A rate, applied at 60 or 45 DBOS provided the greatest levels of PA control. The performance of Dimension on non-overseeded bermudagrass does not support the anticipated use of this chemical for PA control.
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Claims 8
Claim · model-written summary
Overseeding affected POA Annua infestation and weed control more than herbicide alone.
- Taxon
- bermudagrass
Cynodon dactylone1 - Treatment
- overseedinge0
- Interactor
- PAe0weed
- Outcome
- Percent plot (PA) infestation and percent weed controle0
- Direction
- more greatly affectede0
- Comparator
- herbicide applications alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent plot (PA) infestation and percent weed control was more greatly affected by the process of overseeding, than that of the herbicide applications alone”
e1“common bermudagrass turf”
Claim · model-written summary
Without overseeding, bermudagrass turf had a maximum 45% PA control in November.
- Taxon
- bermudagrassCynodon dactylone0
- Interactor
- PAe0weed
- Outcome
- PA controle0
- Direction
- maximume0
- Value
- 45%e0
- Qualifier
- not overseedede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When not overseeded, the bermudagrass turf had a maximum of 45% PA control in November”
Claim · model-written summary
Without overseeding, PA control fell to little or none from January to March 2000.
- Taxon
- bermudagrassCynodon dactylone1
- Interactor
- PAe1weed
- Outcome
- PA controle1
- Direction
- decreased dramaticallye0
- Qualifier
- January to March 2000e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased dramatically to little or no control from January to March 2000”
e1“the bermudagrass turf had a maximum of 45% PA control”
Claim · model-written summary
Ryegrass overseeding with 0.50 lbs. AI/A herbicide at 45 DBOS provided 79-82% PA control.
- Taxon
- bermudagrassCynodon dactylone1
- Treatment
- ryegrass overseede0
- Interactor
- PAe0weed
- Outcome
- PA controle0
- Value
- 79-82%e0
- Qualifier
- 0.50 lbs. AI/Ae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the inclusion of ryegrass overseed, the high rate (0.50 lbs. AI/A) applied closest to the overseeding (45 DBOS) provided between 79-82% PA control over the length of the test”
e1“common bermudagrass turf”
Claim · model-written summary
In untreated plots, overseeding increased PA suppression threefold versus no overseeding.
- Taxon
- bermudagrassCynodon dactylone1
- Treatment
- overseedinge0
- Interactor
- PAe0weed
- Outcome
- PA suppressione0
- Direction
- increasede0
- Value
- 3Xe0
- Comparator
- non-overseeded, non-chemical controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“non-chemical receiving control plots showed a 3X increased level in PA suppression due to overseeding, when compared to the non-overseeded, non-chemical controls”
e1“common bermudagrass turf”
Claim · model-written summary
Dimension herbicide alone had little effect on PA control.
- Taxon
- bermudagrassCynodon dactylone1
- Treatment
- Dimension herbicidee0
- Interactor
- PAe0weed
- Outcome
- PA controle0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dimension herbicide alone had little effect for PA control”
e1“common bermudagrass turf”
Claim · model-written summary
With overseeding, 0.50 lb. AI/A Dimension at 60 DBOS gave among the greatest PA control.
- Taxon
- bermudagrassCynodon dactylone1
- Treatment
- 0.50 lb. AI/A rate, applied at 60 or 45 DBOSe0
- Interactor
- PAe0weed
- Outcome
- PA controle0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When combined with overseeding, the 0.50 lb. AI/A rate, applied at 60 or 45 DBOS provided the greatest levels of PA control”
e1“common bermudagrass turf”
Claim · model-written summary
Dimension performance without overseeding did not support use for PA control.
- Taxon
- bermudagrassCynodon dactylone0
- Treatment
- Dimensione0
- Interactor
- PAe0weed
- Outcome
- anticipated use of this chemical for PA controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The performance of Dimension on non-overseeded bermudagrass does not support the anticipated use of this chemical for PA control”
The same questions in other papers
herbicide · control · Cynodon dactylon (Bermuda grass)Positive and negative results
1 paper in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.