Abstract
Plant growth regulators were evaluated on common and African ‘Tifway’ bermudagrass. Flurprimidol plus mefluidide applied at 1.1 plus 0.14 kg ha -1 and followed by 0.56 plus 0.14 kg ha -1 at 2- to 3-week interval suppressed vegetative growth of mowed common bermudagrass for 5 wk (17 to 23%) and unmowed turf for 6 wk (40%), but severely injured the turf. The injury ranged from 25 to 32% from 2 to 6 wk after treatment. The plant growth regulators that injured common bermudagrass less than flurprimidol plus mefluidide did not suppress the mowed turf for as long a period. Vegetative growth of common bermudagrass not mowed was suppressed for 6 wk when treated once with flurprimidol plus mefluidide and twice with flurprimidol, mefluidide, imazethapyr, paclobutrazol (1.1 plus 1.1 kg ha -1 ), and paclobutrazol plus mefluidide. Of the plant growth regulators evaluated, only imazethapyr suppressed common bermudagrass seedheads. The suppression was 70% for 4 wk, but reduced to <70% by 5 wk. Paclobutrazol applied initially at 1.1 kg ha -1 and followed at 0.56 kg ha -1 suppressed vegetative growth of mowed Tifway bermudagrass for 5 wk and unmowed turf for 8 wk without causing severe injury. The suppression of mowed Tifway bermudagrass with two applications of paclobutrazol was as good or better than with any other plant growth regulator. All plant growth regulators suppressed vegetative growth of unmowed Tifway bermudagrass for 8 wk.
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Claims 11
Claim · model-written summary
Sequential flurprimidol plus mefluidide suppressed mowed common bermudagrass growth for five weeks by 17 to 23%.
- Taxon
- common bermudagrasse0
- Treatment
- Flurprimidol plus mefluidide applied at 1.1 plus 0.14 kg ha -1 and followed by 0.56 plus 0.14 kg ha -1e0
- Outcome
- vegetative growthe0
- Direction
- suppressede0
- Value
- 17 to 23%e0
- Qualifier
- for 5 wke0
Not reportedComparator
Verbatim
e0“Flurprimidol plus mefluidide applied at 1.1 plus 0.14 kg ha -1 and followed by 0.56 plus 0.14 kg ha -1 at 2- to 3-week interval suppressed vegetative growth of mowed common bermudagrass for 5 wk (17 to 23%)”
Claim · model-written summary
The sequential combination suppressed unmowed turf growth for six weeks by 40%.
- Taxon
- bermudagrass
Cynodon dactylont0 - Treatment
- Flurprimidol plus mefluididee0
- Outcome
- unmowed turfe0
- Direction
- suppressede0
- Value
- 40%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flurprimidol plus mefluidide applied at 1.1 plus 0.14 kg ha -1 and followed by 0.56 plus 0.14 kg ha -1 at 2- to 3-week interval suppressed vegetative growth of mowed common bermudagrass for 5 wk (17 to 23%) and unmowed turf for 6 wk (40%), but severely injured the turf”
t0“Bermudagrass (Cynodon spp.)”
Claim · model-written summary
The treatment severely injured turf, with injury of 25 to 32% from two to six weeks.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- treatmente0
- Outcome
- injurye0
- Value
- 25 to 32%e0
- Qualifier
- from 2 to 6 wke0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The injury ranged from 25 to 32% from 2 to 6 wk after treatment”
t0“Bermudagrass (Cynodon spp.)”
Claim · model-written summary
Less injurious regulators suppressed mowed common bermudagrass for a shorter period.
Verbatim
e0“The plant growth regulators that injured common bermudagrass less than flurprimidol plus mefluidide did not suppress the mowed turf for as long a period”
Claim · model-written summary
Several listed regulators suppressed unmowed common bermudagrass growth for six weeks.
- Taxon
- common bermudagrasse0
- Treatment
- flurprimidol plus mefluididee0
- Outcome
- Vegetative growthe0
- Direction
- suppressede0
- Qualifier
- for 6 wke0
Not reportedComparator
Verbatim
e0“Vegetative growth of common bermudagrass not mowed was suppressed for 6 wk when treated once with flurprimidol plus mefluidide and twice with flurprimidol, mefluidide, imazethapyr, paclobutrazol (1.1 plus 1.1 kg ha -1 ), and paclobutrazol plus mefluidide”
Claim · model-written summary
Only imazethapyr suppressed common bermudagrass seedheads.
Not reportedComparator
Verbatim
e0“only imazethapyr suppressed common bermudagrass seedheads”
Claim · model-written summary
Imazethapyr seedhead suppression was 70% for four weeks and fell below 70% by week five.
- Taxon
- bermudagrassCynodon dactylont0
- Outcome
- suppressione0
- Direction
- reducede0
- Value
- 70%e0
- Qualifier
- <70% by 5 wke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The suppression was 70% for 4 wk, but reduced to <70% by 5 wk”
t0“Bermudagrass (Cynodon spp.)”
Claim · model-written summary
Sequential paclobutrazol suppressed mowed Tifway vegetative growth for five weeks.
- Taxon
- bermudagrassCynodon dactylone0
- Material
- Tifwaye0
- Treatment
- Paclobutrazol applied initially at 1.1 kg ha -1 and followed at 0.56 kg ha -1e0
- Outcome
- vegetative growthe0
- Direction
- suppressede0
- Qualifier
- for 5 wke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Paclobutrazol applied initially at 1.1 kg ha -1 and followed at 0.56 kg ha -1 suppressed vegetative growth of mowed Tifway bermudagrass for 5 wk”
Claim · model-written summary
Sequential paclobutrazol suppressed unmowed Tifway growth for eight weeks without severe injury.
- Taxon
- BermudagrassCynodon dactylont0
- Material
- Tifwaye0
- Treatment
- Paclobutrazole0
- Outcome
- unmowed turfe0
- Direction
- suppressede0
- Qualifier
- without causing severe injurye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Paclobutrazol applied initially at 1.1 kg ha -1 and followed at 0.56 kg ha -1 suppressed vegetative growth of mowed Tifway bermudagrass for 5 wk and unmowed turf for 8 wk without causing severe injury”
t0“Bermudagrass (Cynodon spp.)”
Claim · model-written summary
Two paclobutrazol applications suppressed mowed Tifway at least as well as other regulators.
- Taxon
- bermudagrassCynodon dactylone0
- Material
- Tifwaye0
- Treatment
- two applications of paclobutrazole0
- Outcome
- suppressione0
- Direction
- as good or bettere0
- Comparator
- any other plant growth regulatore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The suppression of mowed Tifway bermudagrass with two applications of paclobutrazol was as good or better than with any other plant growth regulator”
Claim · model-written summary
All regulators suppressed unmowed Tifway growth for eight weeks.
- Taxon
- bermudagrassCynodon dactylone0
- Material
- Tifwaye0
- Treatment
- All plant growth regulatorse0
- Outcome
- vegetative growthe0
- Direction
- suppressede0
- Qualifier
- for 8 wke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All plant growth regulators suppressed vegetative growth of unmowed Tifway bermudagrass for 8 wk”
The same questions in other papers
Mefluidide · growth · Cynodon dactylon (Bermuda grass)Positive and negative results
1 in the opposite direction
- negative
paclobutrazol · control · Cynodon dactylon (Bermuda grass)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
Flurprimidol · growth · Cynodon dactylon (Bermuda grass)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
1 paper more in this group
See all 5 papers →paclobutrazol · growth · Cynodon dactylon (Bermuda grass)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
3 papers more in this group
See all 7 papers →class · growth · Cynodon dactylon (Bermuda grass)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- 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.