Abstract
Bacterial etiolation, caused by Acidovorax avenae, is a widespread problem in creeping bentgrass putting green turf. The symptoms normally appear as abnormally elongated turfgrass stems and leaves. Observations at multiple field sites suggest the involvement of plant growth regulators (i.e., GA-biosynthesis inhibitors) commonly applied to turf, alluding to a phytohormone imbalance caused by the bacterium. A 2-year field study examined the effects of trinexapac-ethyl, flurprimidol, and paclobutrazol on bacterial etiolation severity caused by A. avenae. Trinexapac-ethyl applied at 0.05 kg a.i. ha −1 every 7 days and 0.10 kg ha −1 every 14 days increased etiolation compared with all other treatments in both years. Flurprimidol and paclobutrazol were not different from the control but high-rate applications caused phytotoxicity that lowered turf quality early in 2014. When the etiolated turfgrass was removed with mowing, turfgrass treated with trinexapac-ethyl exhibited the highest turfgrass quality on most rating dates. Results from this work illustrate that using plant growth regulator materials with different modes of action is a solution to managing creeping bentgrass growth while limiting the potential for bacterial etiolation outbreaks.
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Claims 5
Claim · model-written summary
Trinexapac-ethyl increased bacterial etiolation in creeping bentgrass compared with all other treatments in both years
- Taxon
- creeping bentgrass
Agrostis stoloniferae0 - Treatment
- Trinexapac-ethyle1
- Interactor
- Acidovorax avenaeParacidovorax avenaee0pathogen
- Outcome
- etiolatione1
- Direction
- increasede1
- Comparator
- all other treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial etiolation, caused by Acidovorax avenae, is a widespread problem in creeping bentgrass putting green turf”
e1“Trinexapac-ethyl applied at 0.05 kg a.i. ha −1 every 7 days and 0.10 kg ha −1 every 14 days increased etiolation compared with all other treatments in both years”
Claim · model-written summary
Flurprimidol and paclobutrazol did not differ from the control in bacterial etiolation severity on creeping bentgrass
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- Flurprimidol and paclobutrazole2
- Interactor
- A. avenaeParacidovorax avenaee3pathogen
- Outcome
- etiolation severitye3
- Direction
- not differente2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial etiolation, caused by Acidovorax avenae, is a widespread problem in creeping bentgrass putting green turf”
e2“Flurprimidol and paclobutrazol were not different from the control”
e3“A 2-year field study examined the effects of trinexapac-ethyl, flurprimidol, and paclobutrazol on bacterial etiolation severity caused by A. avenae”
Claim · model-written summary
High-rate applications of flurprimidol and paclobutrazol caused phytotoxicity that lowered creeping bentgrass turf quality early in 2014
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- high-rate applicationse2
- Outcome
- turf qualitye2
- Direction
- lowerede2
- Qualifier
- phytotoxicitye2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial etiolation, caused by Acidovorax avenae, is a widespread problem in creeping bentgrass putting green turf”
e2“high-rate applications caused phytotoxicity that lowered turf quality early in 2014”
Claim · model-written summary
Trinexapac-ethyl gave the highest creeping bentgrass turfgrass quality on most rating dates when etiolated turfgrass was removed by mowing
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- trinexapac-ethyle4
- Outcome
- turfgrass qualitye4
- Direction
- higheste4
- Qualifier
- on most rating datese4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial etiolation, caused by Acidovorax avenae, is a widespread problem in creeping bentgrass putting green turf”
e4“When the etiolated turfgrass was removed with mowing, turfgrass treated with trinexapac-ethyl exhibited the highest turfgrass quality on most rating dates”
Claim · model-written summary
Using plant growth regulators with different modes of action is a solution for managing creeping bentgrass growth while limiting bacterial etiolation outbreaks
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- plant growth regulator materials with different modes of actione5
- Outcome
- managing creeping bentgrass growthe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial etiolation, caused by Acidovorax avenae, is a widespread problem in creeping bentgrass putting green turf”
e5“using plant growth regulator materials with different modes of action is a solution to managing creeping bentgrass growth while limiting the potential for bacterial etiolation outbreaks”
The same questions in other papers
trinexapac-ethyl · quality: general · Agrostis stolonifera (creeping bent grass)Results agree
4 papers in the same direction as this paper
- positive
- positive
- 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.