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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T077.pdf
Last checked: 11/11/2016
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): | Martínez-Espinoza, A. D.;
Burpee, L. L. |
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| Author Affiliation: | Department of Plant Pathology, University of Georgia, Griffin, Georgia |
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| Title: | Evaluation and application of fungicide timing for dollar spot control on bentgrass, 2008 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 3, 2009, p. T077. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Application timing; Boscalid; Disease control; Dollar spot; Fungicide efficacy; Fungicide evaluation; Iprodione; Sclerotinia homoeocarpa; Triticonazole
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| Cultivar Names: | Penncross |
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| Trade Names: | Emerald 70 WG; Trinity; Iprodione PRO |
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| Abstract/Contents: | "A fungicide trial was conducted on a 15-yr-old sward of creeping bentgrass grown on a sand/peat root zone (pH 6.2) at the Georgia Experiment Station. Fertilizer treatments consisted of 1.0 lb and 0.5 lb nitrogen (Lesco 24-4-10) per 1,000 sq ft applied on 5 May and 8 Sep, respectively. The turfgrass was maintained at a height of 0.2-in. by mowing three times per week. The objective of the trial was to evaluate the proper timing of fungicides that can provide disease control and maintain high turf quality. Treatments were arranged as plots (3.3 ft x 5 ft) in a randomized complete block design with four replications. For the preventive program, an initial fungicide application was made on 8 May, followed by subsequent applications on a 14-day schedule. For the curative programs, an initial fungicide application was made on 22 May, followed by subsequent applications on a 14-day schedule. Fungicides were applied using 2.5 gal of water per 1,000 sq ft with a wheel-mounted, CO2- pressured boom sprayer at 30 psi using XR TeeJet 8002VS nozzles. The turfgrass was inoculated with an autoclaved tall fescue/barley/wheat seed mixture infested with a bentgrass isolate of S. homoeocarpa on 9 May. 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 evaluation of dollar spot infection centers was conducted at 7- to 14-day intervals from the beginning 22 May. Values were subjected to analysis of variance and means were separated using Fisher's protected LDS at α=0.05. Dollar spot incidence progressed rapidly, reaching =209 dollar spot centers by 10 Jul. The highest infection was observed on 29 Jul in which the infection centers reached 300 in non-treated plots. Throughout the study, all treatments provided significant (α<0.05) disease suppression compared to the non-treated check." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Martínez-Espinoza, A. D., and L. L. Burpee. 2009. Evaluation and application of fungicide timing for dollar spot control on bentgrass, 2008. PDMR: Plant Dis. Manage. Rep. 3:p. T077. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T077.pdf
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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