Growth Suppression of ‘Kenblue’ Kentucky Bluegrass Using Plant Growth Regulators and Degree Day Application Timing

1989 ◽  
Vol 81 (5) ◽  
pp. 749-752 ◽  
Author(s):  
B. E. Branham ◽  
T. K. Danneberger
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Kentucky Bluegrass ◽  
Growth Suppression ◽  
Application Timing ◽  
Degree Day

Response of Centipedegrass (Eremochloa ophiuroides) to Plant Growth Regulators

1992 ◽  
Vol 6 (1) ◽  
pp. 113-118 ◽  
Author(s):  
B. Jack Johnson
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Vegetative Growth ◽  
Initial Treatment ◽  
Growth Suppression ◽  
Severe Injury ◽  
Eremochloa Ophiuroides

CGA 163935, paclobutrazol, and paclobutrazol plus mefluidide were evaluated for their growth regulating effect on centipedegrass over 3 yr. Paclobutrazol did not effectively suppress seedhead production or vegetative growth. Paclobutrazol plus mefluidide at 1.1 + 0.3 kg ai ha–1in each of two applications at a 2-wk interval suppressed seedhead development 77% (average of 3 yr) at 10 wk after the initial treatment without severe injury or loss of stand, but duration of vegetative growth suppression was variable (0 to 6 wk). CGA 163935 applied at 0.4 kg ai ha–1and followed by 0.2 kg ai ha–12 wk later suppressed vegetative growth of mowed and nonmowed centipedegrass for 10 wk, while suppressing seedhead production for 3 to 5 wk. CGA 163935 caused severe injury and stand loss of centipedegrass.

Sequential Herbicide and Plant Growth Regulator Treatments on Bermudagrass (Cynodonspp.)

1991 ◽  
Vol 5 (3) ◽  
pp. 607-611 ◽  
Author(s):  
B. Jack Johnson ◽  
Tim R. Murphy
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Vegetative Growth ◽  
Plant Growth Regulator ◽  
Growth Suppression

Sequential applications of MSMA plus metribuzin with selected plant growth regulators interacted synergistically and increased injury of ‘Tifway’ bermudagrass 1 and 2 wk after treatment. However, the higher injury at 3 wk after treatment, from sequential MSMA plus metribuzin with flurprimidol plus mefluidide or paclobutrazol with mefluidide, was additive. The vegetative growth suppression of bermudagrass at 2 wk after treatment with 2,4-D plus mecoprop plus dicamba with flurprimidol was antagonistic. The higher growth suppression 2 wk after treatment for MSMA plus metribuzin and flurprimidol plus mefluidide was additive compared to flurprimidol with mefluidide alone.

scholarly journals Response of `Tifway' Bermudagrass to Rate and Frequency of Flurprimidol and Paclobutrazol Application

HortScience ◽  
1992 ◽  
Vol 27 (3) ◽  
pp. 230-233 ◽  
Author(s):  
B.J. Johnson
Keyword(s):  
Plant Growth ◽  
Field Experiment ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Vegetative Growth ◽  
Growth Suppression ◽  
Time Interval ◽  
Initial Application ◽  
Repeated Applications ◽  
Cynodon Transvaalensis

A field experiment was conducted for 2 years to determine the effects of rate and time interval for repeated applications of the plant growth regulators (PGR) flurprimidol and paclobutrazol on vegetative suppression of `Tifway' bermudagrass [Cynodon transvaalensis Burtt-Davy × C. dactylon (L.) Pers.]. Suppression of vegetative growth of this grass was generally the same when either flurprimidol or paclobutrazol was applied twice after a 2-, 3-, or 4-week interval. The duration of growth suppression was also similar after initial application with flurprimidol at 0.84 kg·ha-l and repeated at 0.28 to 0.84 kg·ha-1 or with paclobutrazol applied initially at 1.1 kg·ha-1 an d repeated at 0.56 to 1.1 kg·ha-1. Both PGRs caused slight to moderate turfgrass injury at these rates, but the injury was temporary and the grass had fully recovered by 10 weeks. Chemical names used: α -(1-methylethyl)- α -[4-(trifluoromethoxy)-phenyl]-5-pyrimidinemethanol (flurprimidol); (±)-(R*R*) β -[(4-chlorophenyl)-methyl]- α -(1,1-dimethylethyl)-1H-1,2,4-triazole-l-ethanol (paclobutrazol).

Plant Growth Regulators Alter Kentucky Bluegrass Canopy Leaf Area and Carbon Exchange

Crop Science ◽  
2007 ◽  
Vol 47 (2) ◽  
pp. 757-764 ◽  
Author(s):  
Jeffrey S. Beasley ◽  
Bruce E. Branham ◽  
L. Arthur Spomer
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Kentucky Bluegrass ◽  
Carbon Exchange
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