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| Web URL(s): | https://scisoc.confex.com/scisoc/2018am/meetingapp.cgi/Paper/113972
Last checked: 11/14/2018
Requires: JavaScript |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Roberts, Joseph Anthony |
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| Author Affiliation: | University of Maryland, College Park, MD |
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| Title: | Understanding and evaluating management factors that contribute to bacterial etiolation occurring in cool-season golf course fairways |
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| Section: | C05 turfgrass science
Other records with the "C05 turfgrass science" Section
Turfgrass pest management: Weed science and plant pathology
Other records with the "Turfgrass pest management: Weed science and plant pathology" Section
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| Meeting Info.: | Baltimore, Maryland: November 4-7, 2018 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2018, p. 113972. |
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| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Canadian Society of Agronomy] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Bacteria; Cool season turfgrasses; Etiolation; Golf fairways; Plant growth regulators
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| Abstract/Contents: | "Bacterial etiolation has emerged as a significant issue on multiple cool-season turfgrasses. Symptoms have been observed primarily on golf course greens, but new reports have occurred golf course fairway turfgrass. In addition to bacterial pathogens, previous reports have implicated fertilization source and the use of plant growth regulators (PGRs) to play a role in symptom development. In 2016, severe etiolation symptoms were observed on a mixed stand of perennial ryegrass (Lolium perenne L.) and annual bluegrass (Poa annua L.) managed as a golf course fairway in Phoenix, MD. Turf exhibiting etiolation was surface sterilized, examined for isolation of bacterial pathogens, and resulting bacteria were identified as Pantoea spp. throughsequencing of the 16S subunit. In addition to confirmation of pathogenicity, a 2-year field trial was established at the initial golf course to assess how fertilization in combination with antimicrobial and PGR applications impact symptom development. The study design was a 2 x 9 factorial with treatments arranged in a randomized complete block design. The main plot consisted of fertilizer (Urea vs. Ammonium Sulfate) applied as 0.2 lb N 1000 ft-2 every 14 d. The subplot factor included antimicrobial or PGRs [propiconazole, prohexadione calcium, trinexapac-ethyl, chlorothalonil + acibenzolar-S-methyl, Aluminum tris, mineral oil, tebuconazole, paclobutrazol, or none] applied at label rates every 2 weeks. Turf was rated visually every 2 weeks for percent etiolation development. Data was analyzed using the mixed procedure (SAS 9.4) with means separated using Tukeys HSD (Pr<0.05). Fertilization source was not significant when comparing etiolation across both years. Considering all of the treatments evaluated, prohexadione calcium and trinexapac-ethyl resulted in the least etiolation regardless of fertilizer source. Additional research is underway to better understand Pantoea spp. that infect turfgrasses." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"174-5" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Roberts, J. A. 2018. Understanding and evaluating management factors that contribute to bacterial etiolation occurring in cool-season golf course fairways. Agron. Abr. p. 113972. |
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Last checked: 11/14/2018
Requires: JavaScript |
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