Abstract
Abstract Repeated measures using multispectral radiometry resolutely quantify canopy attributes of identical turfgrass cultivars under similar management. Concern regarding multispectral radiometric characterization of turfgrass canopies <24 h following synthetic phthalocyanine colorant application has been affirmed and is accordingly now avoided; yet explicit guidance on subsequent employ, at time(s) > 24‐h postapplication, is lacking. Our objective assessed how petroleum‐derived spray oil (PDSO) and synthetic Cu II phthalocyanine colorant (CPC) combination product influences creeping bentgrass ( Agrostis stolonifera L.) reflectance up to 10 d following application. A maintained fairway received semimonthly 9.76 kg ha –1 soluble N treatments alone or in combination with 27 L PDSO+CPC ha –1 . Treatment by PDSO+CPC increased mean shoot growth (kg ha –1 ) and dark green color index (DGCI) calculated by visible waveband reflectance. Yet reduced far red and near infrared reflectance from PDSO+CPC treated plots artificially deflated mean normalized differential vegetative indices. Cautious interpretation of vegetative indices relying on 710‐to‐810‐nm canopy reflectance is encouraged when evaluating fairways treated by PDSO and Cu II phthalocyanine combination product(s).
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Claims 5
Claim · model-written summary
PDSO+CPC treatment increased mean shoot growth in creeping bentgrass.
- Taxon
- creeping bentgrass
Agrostis stoloniferat0 - Treatment
- PDSO+CPCe0
- Outcome
- mean shoot growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment by PDSO+CPC increased mean shoot growth (kg ha –1 ) and dark green color index (DGCI) calculated by visible waveband reflectance.”
t0“creeping bentgrass”
Claim · model-written summary
PDSO+CPC treatment increased dark green color index (DGCI) in creeping bentgrass.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- PDSO+CPCe0
- Outcome
- dark green color index (DGCI)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment by PDSO+CPC increased mean shoot growth (kg ha –1 ) and dark green color index (DGCI) calculated by visible waveband reflectance.”
t0“creeping bentgrass”
Claim · model-written summary
PDSO+CPC reduced far red and near infrared reflectance in creeping bentgrass plots.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- PDSO+CPCe0
- Outcome
- far red and near infrared reflectancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced far red and near infrared reflectance from PDSO+CPC treated plots artificially deflated mean normalized differential vegetative indices.”
t0“creeping bentgrass”
Claim · model-written summary
Reduced reflectance in PDSO+CPC plots artificially deflated mean normalized differential vegetative indices.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- PDSO+CPCe0
- Outcome
- mean normalized differential vegetative indicese0
- Direction
- deflatede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced far red and near infrared reflectance from PDSO+CPC treated plots artificially deflated mean normalized differential vegetative indices.”
t0“creeping bentgrass”
Claim · model-written summary
Interpret vegetative indices cautiously for fairways treated by PDSO and Cu II phthalocyanine products.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- PDSO and Cu II phthalocyanine combination product(s)e0
- Outcome
- Cautious interpretation of vegetative indicese0
- Qualifier
- 710‐to‐810‐nm canopy reflectancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cautious interpretation of vegetative indices relying on 710‐to‐810‐nm canopy reflectance is encouraged when evaluating fairways treated by PDSO and Cu II phthalocyanine combination product(s).”
t0“creeping bentgrass”
The same questions in other papers
phthalocyanine · growth · Agrostis stolonifera (creeping bent grass)Positive and negative results
1 in the opposite direction
- negative
application · growth · Agrostis stolonifera (creeping bent grass)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- negative
2 papers more in this group
See all 6 papers →application · quality: postharvest · Agrostis stolonifera (creeping bent grass)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.