Abstract
ABSTRACT Turfgrass quality is often limited by the availability of photosynthetically active radiation (PAR) delivered to the turf surface. The cumulative PAR at a given site during 1 d is termed the daily light integral (DLI) and is an effective measurement for quantifying light requirements for various turfgrass systems. The minimum DLI necessary to maintain acceptable quality on creeping bentgrass ( Agrostis stolonifera L.) putting greens has yet to be determined. Shade timing, trinexapac‐ethyl growth regulator, and ultraviolet‐absorbing plant colorant applications may affect the DLI requirement of creeping bentgrass putting greens. The objective of this research was to determine the DLI requirement of a creeping bentgrass putting green by evaluating the effects of shade intensity and timing, as well as the influence of trinexapac‐ethyl and a plant colorant on turfgrass quality and coverage. Intensity treatments of 0, 70, 80, and 90% shade were applied during either morning (sunrise to solar noon) or afternoon (solar noon to sunset) hours from May through October 2016 and 2017 on a ‘Tyee’ creeping bentgrass, sand‐based putting green. Evaluations of visual turf quality and turf coverage were performed every 2 wk. After 2 yr, the DLI requirement to maintain acceptable putting green quality was estimated to be 30 mol m −2 d −1 . Although effective in improving turf quality at times during summer months, trinexapac‐ethyl and the plant colorant did not significantly reduce the DLI requirement.
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Claims 5
Claim · model-written summary
The daily light integral for acceptable putting green quality was estimated at 30 mol m −2 d −1.
- Taxon
- creeping bentgrass
Agrostis stoloniferat0 - Outcome
- DLI requirement to maintain acceptable putting green qualitye0
- Value
- 30 mol m −2 d −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the DLI requirement to maintain acceptable putting green quality was estimated to be 30 mol m −2 d −1”
t0“Creeping Bentgrass”
Claim · model-written summary
Trinexapac‐ethyl improved turf quality at times in summer.
- Taxon
- Creeping BentgrassAgrostis stoloniferat0
- Treatment
- trinexapac‐ethyle0
- Outcome
- turf qualitye0
- Direction
- improvinge0
- Qualifier
- at times during summer monthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although effective in improving turf quality at times during summer months, trinexapac‐ethyl and the plant colorant did not significantly reduce the DLI requirement”
t0“Creeping Bentgrass”
Claim · model-written summary
The plant colorant improved turf quality at times in summer.
- Taxon
- Creeping BentgrassAgrostis stoloniferat0
- Treatment
- plant colorante0
- Outcome
- turf qualitye0
- Direction
- improvinge0
- Qualifier
- at times during summer monthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although effective in improving turf quality at times during summer months, trinexapac‐ethyl and the plant colorant did not significantly reduce the DLI requirement”
t0“Creeping Bentgrass”
Claim · model-written summary
Trinexapac‐ethyl did not significantly reduce the DLI requirement.
- Taxon
- Creeping BentgrassAgrostis stoloniferat0
- Treatment
- trinexapac‐ethyle0
- Outcome
- DLI requiremente0
- Direction
- did not significantly reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“trinexapac‐ethyl and the plant colorant did not significantly reduce the DLI requirement”
t0“Creeping Bentgrass”
Claim · model-written summary
The plant colorant did not significantly reduce the DLI requirement.
- Taxon
- Creeping BentgrassAgrostis stoloniferat0
- Treatment
- plant colorante0
- Outcome
- DLI requiremente0
- Direction
- did not significantly reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“trinexapac‐ethyl and the plant colorant did not significantly reduce the DLI requirement”
t0“Creeping Bentgrass”
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.