Safety of Sequential Fall Methiozolin Applications on Creeping Bentgrass Putting Greens

cftm ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Xi Xiong ◽  
Justin Q. Moss ◽  
John B. Haguewood ◽  
Kyungjoon Koh
Keyword(s):  
Creeping Bentgrass ◽  
Putting Greens

Use of TEM in Plant Disease Diagnosis: A Xylem-Limited Bacterium Associated with Diseased ‘Toronto’ Creeping Bentgrass

1981 ◽  
Vol 39 ◽  
pp. 414-415
Author(s):  
Karen K. Baker ◽  
David L. Roberts
Keyword(s):  
Osmium Tetroxide ◽  
Plant Disease ◽  
Leaf Tissue ◽  
Infectious Agent ◽  
Creeping Bentgrass ◽  
Disease Diagnosis ◽  
Unknown Etiology ◽  
Agrostis Palustris ◽  
Putting Greens ◽  
Plant Disease Diagnosis

Plant disease diagnosis is most often accomplished by examination of symptoms and observation or isolation of causal organisms. Occasionally, diseases of unknown etiology occur and are difficult or impossible to accurately diagnose by the usual means. In 1980, such a disease was observed on Agrostis palustris Huds. c.v. Toronto (creeping bentgrass) putting greens at the Butler National Golf Course in Oak Brook, IL.The wilting symptoms of the disease and the irregular nature of its spread through affected areas suggested that an infectious agent was involved. However, normal isolation procedures did not yield any organism known to infect turf grass. TEM was employed in order to aid in the possible diagnosis of the disease.Crown, root and leaf tissue of both infected and symptomless plants were fixed in cold 5% glutaraldehyde in 0.1 M phosphate buffer, post-fixed in buffered 1% osmium tetroxide, dehydrated in ethanol and embedded in a 1:1 mixture of Spurrs and epon-araldite epoxy resins.

scholarly journals Humic acids-based biostimulants impact on root viability and hormone metabolism in creeping bentgrass putting greens

itsrj ◽  
2021 ◽  
Author(s):  
Xunzhong Zhang ◽  
Mike Goatley ◽  
David McCall ◽  
Kelly Kosiarski ◽  
Frank Reith
Keyword(s):  
Humic Acids ◽  
Creeping Bentgrass ◽  
Hormone Metabolism ◽  
Putting Greens

Control of Silvery-Thread Moss (Bryum argenteum Hedw.) in Creeping Bentgrass (Agrostis palustris Huds.) Putting Greens

2004 ◽  
Vol 18 (3) ◽  
pp. 560-565 ◽  
Author(s):  
Keith D. Burnell ◽  
Fred H. Yelverton ◽  
Joseph C. Neal ◽  
Travis W. Gannon ◽  
J. Scott McElroy
Keyword(s):  
Ferrous Sulfate ◽  
Field Experiments ◽  
Creeping Bentgrass ◽  
Nitrogen Fertilizers ◽  
Agrostis Palustris ◽  
Putting Greens ◽  
Rainfall Events ◽  
Population Reduction ◽  
Elk River ◽  
Turfgrass Quality

Field experiments were conducted to evaluate chemicals for silvery-thread moss control and bentgrass turfgrass quality. Treatments included iron (Fe)-containing products, nitrogen fertilizers, Ultra Dawn dishwashing detergent (UD) at 3% (v/v), and oxadiazon. In general, greater silvery-thread moss control was achieved with Fe-containing products. Ferrous sulfate at 40 kg Fe/ha plus ammonium sulfate at 30 kg N/ha, a combined product of ferrous oxide, ferrous sulfate, and iron humates (FEOSH) at 125 kg Fe/ha, and a combined product of iron disulfide and ferrous sulfate (FEDS) at 112 kg Fe/ha reduced silvery-thread moss populations 87, 81, and 69%, respectively, 6 wk after initial treatment (WAIT). UD reduced silvery-thread moss populations 57% 6 WAIT. The addition of oxadiazon to Fe-containing treatments did not improve silvery-thread moss population reduction. Other experiments evaluated two formulations of chlorothalonil, each applied at two rates, chlorothalonil with zinc at 9.5 and 17.4 kg ai/ha and chlorothalonil without zinc at 9.1 and 18.2 kg/ ha, and two spray volumes (2,038 and 4,076 L/ha). Greater silvery-thread moss population reduction was observed at Jefferson Landing in 1999 compared with Elk River in 1999 and 2000. Rainfall events at Elk River in 1999 and 2000 within 24 h after application and no rain at Jefferson Landing may account for variation in performance of products between sites. However, no difference in chlorothalonil formulation, rate, or spray volume was observed in any location or year. These data indicate that Fe-containing fertilizers or chlorothalonil can be used to reduce silvery-thread moss populations in creeping bentgrass putting greens.

Growing Substrates, Fertilization, and Irrigation for Creeping Bentgrass Establishment on Sand-Based Putting Greens

itsrj ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 394
Author(s):  
Sara Calvache ◽  
Agnar Kvalbein ◽  
Trygve S. Aamlid
Keyword(s):  
Creeping Bentgrass ◽  
Putting Greens

Implementation of Hyperspectral Radiometry in Irrigation Management of Creeping Bentgrass Putting Greens

Crop Science ◽  
2006 ◽  
Vol 46 (4) ◽  
pp. 1564-1569 ◽  
Author(s):  
K. C. Hutto ◽  
R. L. King ◽  
J. D. Byrd ◽  
D. R. Shaw
Keyword(s):  
Irrigation Management ◽  
Creeping Bentgrass ◽  
Putting Greens

Control of Lesser Swinecress in Creeping Bentgrass Putting Greens

2013 ◽  
Vol 10 (1) ◽  
pp. 1-3
Author(s):  
J. A. Hoyle ◽  
C. M. Straw ◽  
G. M. Henry ◽  
T. Cooper ◽  
L. L. Beck ◽  
...  
Keyword(s):  
Creeping Bentgrass ◽  
Putting Greens

Foliar Applications of Magnesium and Iron Encourage Annual Bluegrass in Shaded Creeping Bentgrass Putting Greens

2003 ◽  
Vol 2 (1) ◽  
pp. 1-7 ◽  
Author(s):  
James C. Stiegler ◽  
Gregory E. Bell ◽  
Dennis L. Martin
Keyword(s):  
Creeping Bentgrass ◽  
Putting Greens ◽  
Annual Bluegrass

scholarly journals Evaluation of Preventive Fungicide Applications for Fairy Ring Control in Golf Putting Greens and In Vitro Sensitivity of Fairy Ring Species to Fungicides

Plant Disease ◽  
2012 ◽  
Vol 96 (7) ◽  
pp. 1001-1007 ◽  
Author(s):  
G. L. Miller ◽  
M. D. Soika ◽  
L. P. Tredway
Keyword(s):  
Soil Temperature ◽  
Field Experiments ◽  
Chemical Properties ◽  
Creeping Bentgrass ◽  
Fungicide Sensitivity ◽  
Putting Greens ◽  
Growth Assay ◽  
Ring Species ◽  
The Impact

Fairy ring species induce symptoms on putting greens mostly indirectly, by modifying the soil physical or chemical properties. Therefore, preventive rather than curative fungicide applications may be more effective in managing fairy ring. Two field experiments were conducted on a creeping bentgrass research green to evaluate fairy ring control from preventive fungicide applications. A 3-year study investigated the optimal rate and soil temperature-based timing of a preventive application of triadimefon and tebuconazole. A 2-year study evaluated the impact of irrigation timing and fungicide + surfactant tank mixtures on the efficacy of preventive applications of triadimefon and triticonazole. Fungicide-treated plots in both studies exhibited less fairy ring severity than untreated plots. Data suggest that a 5-day average soil temperature range of 13 to 16°C may be suitable for initiating preventive applications. Symptoms occurred earlier in plots treated with a surfactant tank mix than in those treated with fungicide alone. Irrigation timing had no effect on fungicide performance. The sensitivity of 16 isolates representing major fairy ring species to flutolanil, propiconazole, tebuconazole, triadimefon, and triticonazole was determined with a mycelial growth assay. No significant differences in fungicide sensitivity were detected among species. Isolates had significantly higher 50% effective concentration values for triadimefon than for the other fungicides tested.

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