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| Web URL(s): | http://www.newss.org/wp-content/uploads/2017/07/2017-NEPPSC-Proceedings-FINAL.pdf#page=54
Last checked: 04/16/2018
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Proceedings |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Ujcich, J.;
Fidanza, M. |
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| Author Affiliation: | Pennsylvania State University, Reading, PA |
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| Title: | Evaluation of dollar spot control and turf quality in creeping bentgrass from plant protection and plant health products |
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| Meeting Info.: | Philadelphia, Pennsylvania: January 3-6, 2017 |
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| Source: | Proceedings of the Second Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. 2017, p. 46. |
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| Publishing Information: | s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Disease control; Dollar spot; Fungicide efficacy; Fungicide evaluation; Plant health products; Product evaluation; Quality evaluation; Sclerotinia homoeocarpa
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| Cultivar Names: | PennTrio |
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| Abstract/Contents: | "Creeping bentgrass (Agrostis stoloniferous L.) is commonly maintained on golf course fairways in the Mid-Atlantic USA region. Dollar spot (Sclerotinia homoeocarpa F.T. Bennett) is a major foliar disease of fairway-height creeping bentgrass. During the summer months, golf course superintendents have the challenge to manage both dollar spot disease and maintain turf quality to meet golfer expectations for a suitable playing surface. An experiment was conducted from 6 June to 16 August 2016 to evaluate plant health products and a fungicide to control dollar spot and also facilitate acceptable turf quality. The experiment was conducted on creeping bentgrass at the Center for the Agricultural Sciences and a Sustainable Environment at Penn State Berks Campus in Reading, PA. Creeping bentgrass ('PennTrio') was mowed three times per week with a reel mower at a fairway height-of-cut of 10 mm with clippings removed. This site has a history of dollar spot activity. No supplemental fertilization was applied during this experiment, and irrigation was applied only to avoid drought stress to this sand-based rootzone with a pH 7.7 and 0.23% organic matter. Treatments included plant health products (mineral oil 27 or 54 L product•ha-1 ; Essential Plus 1-0-1 liquid fertilizer 9.3 L product•ha-1 ; Re-Store Plus 3-0-2 liquid fertilizer 9.3 L product•ha-1 ; soil surfactant 19 L product•ha-1 ), a fungicide (3.2 kg chlorothalonil ai•ha-1 with 0.006 kg acibenzolar-S-methyl ai•ha-1 ), and an untreated check. The mineral oil product was applied alone at both rates. The fungicide, a commonly used contact fungicide for control of dollar spot, was applied alone and in tank-mix combinations with the liquid fertilizer and soil surfactant products. All treatments were first applied on 6 June 2016, prior to any dollar spot incidence which was first observed on 15 June 2016. All fungicide and plant health treatments were re-applied at 21-day intervals on 27 June and again on 18 July 2016, however, the soil surfactant treatment was re-applied on a 28-day interval on 4 July and again on 1 August 2016. All treatments were applied with a CO2-pressured back-pack sprayer, calibrated to deliver 407 L•ha-1 water carrier at 275 kPa, from a single 8004E nozzle boom that provided 100% plot coverage. Individual plots measured 0.9 x 1.5 m, and all treatments were arranged as a randomized complete block design with four replications. All data was subjected to analysis of variance using ARM (Agricultural Research Manager, v. 2016, Gylling Data Management, Brookings, SD), and treatment means were compared using Fishers least significant difference test at p = 0.05. Dollar spot was evaluated by counting the number of active infection centers per plot on a weekly basis. Best dollar spot control was observed in plots treated with the fungicide and Essential Plus or Re-Store Plus, and also plots treated with the fungicide and soil surfactant. Turf quality was visually evaluated on a 1 to 9 scale each week, where 9 = best quality (color, uniformity, density) and 1 = worst quality. Best turf quality consistently was observed in plots treated with the fungicide and Essential Plus or Re-Store Plus, which is not surprising since those products contain nitrogen, and also plots treated with the fungicide and soil surfactant. Plots treated with the mineral oil alone exhibited a darker green color during two weeks after the first application, but severe dollar spot incidence in those plots resulted in poor turf quality. Of note, no consistent differences were detected among treatments using spectral reflectance (i.e., normalized difference vegetation index from a Crop Circle Model ACS-430; Holland Scientific, Lincoln, NE)." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ujcich, J., and M. Fidanza. 2017. Evaluation of dollar spot control and turf quality in creeping bentgrass from plant protection and plant health products. p. 46. In Proceedings of the Second Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. Philadelphia, Pennsylvania: January 3-6, 2017. s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division. |
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http://www.newss.org/wp-content/uploads/2017/07/2017-NEPPSC-Proceedings-FINAL.pdf#page=54
Last checked: 04/16/2018
Requires: PDF Reader
Notes: Item is within a single large file |
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