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| Full TGIF Record # 281197 Item 1 of 1 |
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| DOI: | 10.2135/cropsci2016.05.0383 |
| Publication Type: | Refereed |
| Author(s): | McCall, David S.; Ervin, Erik H.; Shelton, Camden D.; Reams, Nathaniel; Askew, Shawn D. |
| Author Affiliation: | Virginia Polytechnic Institute and State Univ., Blacksburg, VA |
| Title: | Influence of ferrous sulfate and its elemental components on dollar spot suppression |
| Section: | European Turfgrass Society Conference Other records with the "European Turfgrass Society Conference" Section |
| Meeting Info.: | Salgados, Portugal: June 5-8, 2016 |
| Source: | Crop Science. Vol. 57, No. 2, March/April 2017, p. 581-586. |
| Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
| # of Pages: | 6 |
| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/57/2/581 Last checked: 03/08/2017 Notes: Abstract only |
| Keywords: | TIC Keywords: Agrostis stolonifera; Chlorothalonil; Comparisons; Disease control; Dollar spot; Ferrous sulfate; Fungicide evaluation; Iron chelates; Nitrogen fertility; Sulfur |
| Abstract/Contents: | "Dollar spot (caused by Sclerotinia homoeocarpa F.T. Bennett) is a common disease of Agrostis stolonifera L. and is especially devastating on putting greens. Sequential fungicide applications are often required throughout the growing season for adequate control. This research was conducted to determine if ferrous sulfate (FeSO4) and its elemental components are capable of reducing dollar spot development. Trials were established in situ and in vitro to address this objective. Putting green trials were conducted in Blacksburg, VA, during the summers of 2012 and 2015. Biweekly (May to September) foliar treatments were applied in four randomized complete blocks as: control, FeSO4 (48.8 kg ha-1), sulfur (10.3 kg ha-1), and iron chelate (11.2 kg Fe ha-1). Dollar spot infection centers and visual turf quality were recorded throughout the summer. When disease exceeded a threshold of 75 infection centers per plot, chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile, 12.5 kg ha-1 a.i.) and nitrogen fertility (12.2 kg ha-1) were applied to encourage recovery. After recovery, inputs were minimized to encourage dollar spot development. Ferrous sulfate reduced dollar spot pressure each year. Turf quality was improved with FeSO4 in 2012, but not in 2015. Iron chelate suppressed dollar spot in 2012, but not in 2015. Sulfur had no impact on dollar spot or turf quality in either year. Direct fungitoxic activity of FeSO4 against the dollar spot pathogen was evaluated in vitro across a range of pH. Pure cultures of S. homoeocarpa obtained from the field test site were plated on 0.25x potato dextrose agar amended with 0, 10, 100, and 1000 mg kg-1 FeSO4. Mycelial growth was enhanced at 10 mg kg-1, was not affected at 100 mg kg-1, and was completely inhibited at 1000 mg kg-1. These data suggest FeSO4 suppresses dollar spot by acting as a fungistat against the pathogen." |
| Language: | English |
| References: | 22 |
| Note: | Pictures, color Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-like – may be incomplete): | McCall, D. S., E. H. Ervin, C. D. Shelton, N. Reams, and S. D. Askew. 2017. Influence of ferrous sulfate and its elemental components on dollar spot suppression. Crop Sci. 57(2):p. 581-586. |
| Fastlink to access this record outside TGIF: | http://tic.msu.edu/tgif/flink/RECNO/281197 |
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| DOI: 10.2135/cropsci2016.05.0383 | |
| MSU catalog number: | b2211522a |
| Find from within TIC: | Digitally in TIC by record number. |
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