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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2012/T053.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Report |
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| Author(s): | Martinez-Espinoza, A. D.;
Burpee, L. L. |
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| Author Affiliation: | Department of Plant Pathology, University of Georgia, Griffin, GA |
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| Title: | Evaluation of fungicides for control of brown patch on creeping bentgrass in Georgia, 2009 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 6, 2012, p. T053. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Disease control; Fungicide evaluation; Fungicide trials; Rhizoctonia solani
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| Cultivar Names: | Penncross |
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| Abstract/Contents: | "A fungicide trial was conducted on a 16-yr-old sward of creeping bentgrass grown on a sand/peat root zone (pH 6.2) at the University of Georgia-Griffin campus, Griffin GA. Fertilizer treatments consisted of 1.0 lb and 0.5 lb nitrogen (Lesco 24-4-10) per 1,000 sq ft applied on 6 May and 10 Sep, respectively. The turfgrass was maintained at a height of 0.2-in. by mowing three times per week. Treatments were arranged as plots (3.3 ft by 5 ft) in a randomized complete block design with four replications. An initial application was made on 16 Jun and followed by additional fungicide applications at a 14-day interval or 21 days. Fungicides were applied using 2.0 gal of water per 1,000 sq ft with a hand-held, CO2-pressured boom sprayer at 30 psi using XR TeeJet 8002VS nozzles. On 17 Jun, the experimental plots were inoculated with a bentgrass isolate of Rhizoctonia solani grown on a tall fescue/barley/wheat seed mixture, previously soaked in water overnight and then double sterilized in an Erlenmeyer flask. The plots received approximately 0.24-in. of irrigation water daily at 15:00 and 17:00 hr to ensure foliar wetness for infection. Visual ratings were performed at 7- to 14-day intervals from the initial application date. Visual estimates of brown patch disease severity were made using a modified Horsfall-Barratt rating scale (0 to 11), and then transformed to percent disease severity (0 = 0%, 5=37.5%, 11=100%). Percent of disease severity data were subjected to analysis of variance, and means were statistically separated using Fisher's protected LSD at α=0.05. Brown patch severity progressed rapidly and reached 89.5% on 17 Aug. All treatments provided significant (α<0.05) disease suppression compared to the non-treated check with the exception of one rating date in the onset of the experiment. Except for Emerald 70WG, all other treatments were statistically similar later in the trial and when the disease epidemic was severe. No phytotoxicity was observed for any of the treatments." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is as abstract and tables only!
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Martinez-Espinoza, A. D., and L. L. Burpee. 2012. Evaluation of fungicides for control of brown patch on creeping bentgrass in Georgia, 2009. PDMR: Plant Dis. Manage. Rep. 6:p. T053. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2012/T053.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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