scholarly journals Influence of Nitrogen Rate and Timing, Fungicide Application Method, and Simulated Rainfall after Fungicide Application on Brown Patch Severity in Tall Fescue

cftm ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 190018
Author(s):  
E. Lee Butler ◽  
Glenn H. Galle ◽  
James P. Kerns
Keyword(s):  
Tall Fescue ◽  
Simulated Rainfall ◽  
Nitrogen Rate ◽  
Brown Patch ◽  
Fungicide Application ◽  
Application Method

scholarly journals Development of Brown Patch and Pythium Blight in Tall Fescue as Affected by Irrigation Frequency, Clipping Removal, and Fungicide Application

Plant Disease ◽  
2001 ◽  
Vol 85 (5) ◽  
pp. 543-546 ◽  
Author(s):  
D. M. Settle ◽  
J. D. Fry ◽  
N. A. Tisserat
Keyword(s):  
Rhizoctonia Solani ◽  
Tall Fescue ◽  
Pythium Aphanidermatum ◽  
Irrigation Frequency ◽  
Brown Patch ◽  
Fungicide Application

We studied the effects of irrigation frequency, clipping removal, and fungicide application on the development of Rhizoctonia brown patch (Rhizoctonia solani) and Pythium blight (Pythium aphanidermatum) in tall fescue. Brown patch severity was not significantly different between plots irrigated daily and those irrigated on alternate days. Similarly, no differences in brown patch were observed in plots where grass clippings were returned to the sward with a mulching mower compared with plots where clippings were removed. Preventive applications of azox-ystrobin at 35-day intervals or postinfection applications of chlorothalonil reduced brown patch severity, but only the azoxystrobin treatment provided aesthetically acceptable (<10%) levels of brown patch control. However, azoxystrobin applications also increased Pythium blight compared with untreated or chlorothalonil-treated tall fescue, especially in plots that received daily irrigation.

Nitrogen Rate and Initiation Date Effects on Stockpiled Tall Fescue During Fall Grazing in Tennessee

cftm ◽  
2016 ◽  
Vol 2 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Renata L.G. Nave ◽  
Rondineli P. Barbero ◽  
Chris N. Boyer ◽  
Michael D. Corbin ◽  
Gary E. Bates
Keyword(s):  
Tall Fescue ◽  
Nitrogen Rate

scholarly journals Impact of Bispyribac-sodium Application on Annual Bluegrass Control and Brown Patch Severity in Tall Fescue

2012 ◽  
Vol 30 (4) ◽  
pp. 195-200
Author(s):  
Matthew Cutulle ◽  
Jeffrey Derr ◽  
Adam Nichols ◽  
David McCall ◽  
Brandon Horvath
Keyword(s):  
Rhizoctonia Solani ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Iron Supplementation ◽  
Field Research ◽  
Field Trials ◽  
Control Field ◽  
Brown Patch ◽  
Annual Bluegrass ◽  
Application Rates

Annual bluegrass (Poa annua L.) is a problematic weed in tall fescue [Festuca arundinacea (Schreb.) S.J. Darbyshire], with limited options available for postemergence control. Field research was conducted to evaluate bispyribac-sodium application rates (37 or 74 g ai·ha−1) (0.033 or 0.066 lb ai·A−1) and timings (March, April or May) as well as iron supplementation on brown patch (Rhizoctonia solani) severity, annual bluegrass control, and tall fescue quality. In general, applying bispyribac-sodium to tall fescue did not result in significantly more brown patch than in untreated plots in field trials. Applying bispyribac-sodium in March or April resulted in significantly higher annual bluegrass control than applications in May. In greenhouse experiments, bispyribac-sodium at 37 and 74 g ai·ha−1 (0.033 or 0.066 lb ai·A−1) was applied to brown patch-inoculated tall fescue plants. Under conditions of high inoculum and humidity in those greenhouse studies, applications of bispyribac-sodium increased the number of brown patch lesions relative to untreated plants. Tall fescue plant height was initially reduced after being treated with bispyribac-sodium; however, six weeks after application tall fescue plants in treated with herbicide were taller than the nontreated plants.

Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry

2014 ◽  
pp. 140519061711001
Author(s):  
David Ehret ◽  
Thomas Forge ◽  
Bernie Zebarth ◽  
Brenda Frey ◽  
Tom Helmer ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Highbush Blueberry ◽  
Nitrogen Rate ◽  
Application Method ◽  
Early Production

Nitrogen Rate and Application Timing Affect the Yield and Risk Associated with Stockpiling Tall Fescue for Winter Grazing

2011 ◽  
Vol 9 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Chris D. Teutsch ◽  
William M. Clapham ◽  
James M. Fedders ◽  
Gordon Groover ◽  
W. Mac Tilson
Keyword(s):  
Tall Fescue ◽  
Nitrogen Rate ◽  
Application Timing ◽  
Winter Grazing

Fungicide Management of Brown Patch of Tall Turf-type Fescue in the Residential Landscape in Oklahoma

2013 ◽  
Vol 14 (1) ◽  
pp. 4
Author(s):  
Damon L. Smith ◽  
Nathan R. Walker
Keyword(s):  
Transition Zone ◽  
Tall Fescue ◽  
Cultural Practices ◽  
Warm Season ◽  
Kentucky Bluegrass ◽  
Cool Season ◽  
Brown Patch ◽  
Lawn Care ◽  
The Usa ◽  
Residential Market

In the transition zone of the USA, cool-season grasses such as tall fescue are often planted in shaded areas, where warm-season grasses are less adapted. The most damaging disease of tall fescue is brown patch, caused by Rhizoctonia solani. Fungicide applications and cultural practices are often used to manage brown patch in this region. A three-year study was implemented in Oklahoma to evaluate ready-to-use fungicides available to residential lawn owners and compare these to several common commercial fungicide formulations used by professional lawn care applicators. A selection of fungicides representing products commonly available to the residential market and commercial standards were applied to small plots of tall fescue or tall fescue/Kentucky bluegrass mixtures from 2008 to 2010. All products tested, with the exception of azoxystrobin, provided limited or inconsistent control of brown patch and resulted in lower turfgrass quality in all years. Further examination of carrier type (granular vs. liquid) and timing (preventive vs. curative) did not result in strong differences in the level of brown patch control or overall quality. These studies suggest that control of brown patch in tall fescue in the transition zone should focus on integrated disease management principals and not only on applications of fungicides directed at the residential market. Accepted for publication 5 August 2013. Published 22 October 2013.

Effect of Simulated Rainfall on Tall Fescue (Lolium Arundinaceum) Control with Glyphosate

2008 ◽  
Vol 22 (3) ◽  
pp. 553-557 ◽  
Author(s):  
Travis W. Gannon ◽  
Fred H. Yelverton
Keyword(s):  
Tall Fescue ◽  
Field Experiments ◽  
Rainfall Amount ◽  
Simulated Rainfall ◽  
Lolium Arundinaceum ◽  
Application Rates ◽  
Glyphosate Formulation ◽  
Glyphosate Formulations

Field experiments were conducted to determine the effect of simulated rainfall after glyphosate application on tall fescue control. Three glyphosate formulations, three simulated rainfall amounts, two application rates, and three rain-free periods were evaluated. Glyphosate formulations evaluated included Roundup Original®, Roundup Pro®, and Roundup ProDry®. Herbicide drying periods, or rain-free intervals, included 15, 30, or 60 min. Simulated rainfall amounts were 0, 0.25, or 0.64 cm. Application rates of glyphosate were 3.4 or 6.7 kg ae/ha. Averaged across glyphosate formulation and simulated rainfall amount, excellent (≥ 90%) tall fescue control was observed when no simulated rainfall occurred within 60 min after application, whereas good (≥ 80%) tall fescue control was observed when 30 rain-free min were provided. Although current glyphosate labels are vague about rainfastness, these data indicate that critical rain-free periods may be as short as 30 min when higher application rates are used.

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