Chemical plant protectants and plant growth regulator effects on annual bluegrass survival of ice cover

2018 ◽  
Vol 205 (2) ◽  
pp. 202-212 ◽  
Author(s):  
Kevin Laskowski ◽  
Kevin Frank ◽  
Emily Merewitz
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Ice Cover ◽  
Chemical Plant ◽  
Annual Bluegrass

scholarly journals Growth Regulation and Tank Mixing Associated with a Glyphosate-tolerant Perennial Ryegrass Cultivar

2015 ◽  
Vol 25 (2) ◽  
pp. 214-220
Author(s):  
Christian M. Baldwin ◽  
A. Douglas Brede ◽  
Jami J. Mayer
Keyword(s):  
Plant Growth ◽  
Perennial Ryegrass ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Regulation ◽  
Management Strategies ◽  
Additional Benefit ◽  
Minimal Effect ◽  
Annual Bluegrass ◽  
N Sources

With the emergence of glyphosate-tolerant cultivars, identifying management strategies not applicable with older cultivars need to be revisited. Objectives of these research trials were to quantify the growth regulation effects following a glyphosate application and to determine the safety of tank mixing glyphosate with another herbicide, various nitrogen (N) sources, and a plant growth regulator (PGR) on a glyphosate-tolerant perennial ryegrass [PRG (Lolium perenne L.)] cultivar, Replay. In the growth regulation trial, glyphosate was applied at 0 to 1.03 lb/acre, whereas PGRs flurpimidol, trinexapac-ethyl, paclobutrazol, and trinexapac-ethyl + flurpimidol were applied at 0.50, 0.18, 0.37, and 0.09 + 0.22 lb/acre, respectively, on 15 July 2010 and 2 Aug. 2012. In the tank mixing trial, dicamba (0.50 lb/acre), urea (15 lb/acre N), and ammonium sulfate [AMS (15 lb/acre N)] were applied alone or tank mixed with glyphosate at 0 to 0.52 lb/acre. Tank mixing urea with glyphosate had minimal effect on PRG color, while adding AMS consistently improved color at the highest glyphosate rate of 0.52 lb/acre. Twenty days following a glyphosate application, only rates >0.40 lb/acre resulted in significant growth regulation compared with untreated plots. This study indicates that tank mixing glyphosate with another herbicide, a PGR, and various N sources appear safe to the glyphosate-tolerant PRG cultivar. Also, the growth regulating effects of glyphosate applications would serve as an additional benefit to annual bluegrass (Poa annua L.) control reported in previous trials.

Reducing Populations of Annual Bluegrass and Roughstalk Bluegrass in Creeping Bentgrass Fairways: A Nutritional Approach

1999 ◽  
Vol 13 (4) ◽  
pp. 829-834 ◽  
Author(s):  
Gregory E. Bell ◽  
Edward Odorizzi ◽  
T. Karl Danneberger
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Creeping Bentgrass ◽  
Field Studies ◽  
Golf Course ◽  
Irrigation Regime ◽  
Annual Bluegrass ◽  
Putting Green ◽  
And Control

Two field studies, a seeded study and a golf course study, were conducted to compare competition among creeping bentgrass, annual bluegrass, and roughstalk bluegrass when subjected to common weed control practices and foliar applications of iron and magnesium. A research site was selected for the seeded study and divided into 10 whole plots receiving irrigation at either 50 or 100% evapotranspiration deficit. Each whole plot was further divided into subplots receiving one of seven treatments: bensulide, ethofumesate, trinexapac-ethyl, foliar Mg, foliar Fe, foliar Mg plus foliar Fe, and control. The site was seeded to a mixture of creeping bentgrass, annual bluegrass, and roughstalk bluegrass in September 1995, and treatments began in March 1996. Annual bluegrass was reduced 29% in plots treated with foliar Fe and 65% in plots treated with foliar Fe plus foliar Mg. Roughstalk bluegrass was significantly reduced in seeded plots treated with foliar iron (50%), plant growth regulator (75%), and foliar iron plus foliar magnesium (100%). Annual bluegrass and roughstalk bluegrass proportions were not affected by irrigation regime. In a second study, the most effective treatment, foliar magnesium plus foliar iron, was tested on a working golf course fairway and on a practice putting green beginning April 1997 and ending November 1997. Treatments on the golf course fairway and practice putting green were ineffective due to the established, perennial nature of the annual bluegrass biotypes on these sites. Further research is required to improve the efficacy of nutritional treatments on these perennials.

scholarly journals Plant growth regulator effects on winter hardiness of annual bluegrass putting green turf

itsrj ◽  
2021 ◽  
Author(s):  
Michelle DaCosta ◽  
J. Scott Ebdon ◽  
Kevin Miele ◽  
Rachael P. Bernstein ◽  
John C. Inguagiato
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Winter Hardiness ◽  
Annual Bluegrass ◽  
Putting Green

Influence of plant growth regulator and rhizobial inoculation on nodulation and soybean nitrogen contant

2007 ◽  
Vol 35 (2) ◽  
pp. 993-996 ◽  
Author(s):  
Sulejman Redžepović ◽  
Sanja Sikora ◽  
Josip Čolo ◽  
Mihaela Blažinkov ◽  
Marija Pecina
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Rhizobial Inoculation

Assessing fine fescue mixtures and plant growth regulator applications to determine their effect on traffic tolerance and divot recovery

itsrj ◽  
2021 ◽  
Author(s):  
Maggie Reiter ◽  
Nicole T. Mihelich ◽  
Yinjie Qiu ◽  
Brian P. Horgan ◽  
Eric Watkins
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Traffic Tolerance ◽  
Fine Fescue
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