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Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2001.91.6.S147#page=2 Last checked: 10/16/2015 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Clarke, B. B.;
Vaiciunas, S. S. |
Author Affiliation: | Department of Plant Pathology, Rutgers University, New Brunswick, NJ |
Title: | Best management practices for the control of gray leaf spot |
Section: | Biology of Magnaporthe grisea on turfgrass Other records with the "Biology of Magnaporthe grisea on turfgrass" Section
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Meeting Info.: | 2001 APS/MSA/SON Joint Meeting, Salt Lake City, Utah: August 25-29, 2001 |
Source: | Phytopathology. Vol. 91, No. 6, June Supplement 2001, p. S148. |
Publishing Information: | St. Paul, MN: American Phytopathological Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Best management practices; Disease control; Gray leaf spot; Lolium perenne; Festuca arundinacea; Stenotaphrum secundatum; Nitrogen; Water soluble nitrogen; Slow-release fertilizers; Mowing height; Disease severity; Clipping removal; Dithiopyr; Ethofumesate; Herbicides; Fungicides; Azoxystrobin; Thiophanate-methyl; Propiconazole; Trifloxystrobin; Chlorothalonil
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Abstract/Contents: | "Management practices can influence the development of gray leaf spot (GLS) on perennial ryegrass (PRG), tall fescue (TF), and St. Augustinegrass (SA). For all three grasses, the incidence and severity of GLS typically increases with increasing nitrogen (N) rate above an application rate of 24.4 kg N ha-1. N source has also been reported to affect GLS in PRG and TF, but not SA. Compared to controls, water-soluble N sources can increase the severity of GLS, but slow release N sources may reduce the disease. In a New Jersey study, there was a consistent positive association between mowing height and the severity of GLS, whereas no association was reported in a Kentucky study. Removal of infested clippings does not appear to affect GLS. The herbidices dithiopyr and ethofumesate can increase GLS. Fungicides are most effective when used preventively. Azoxystrobin and thiophanate-methyl are most efficacious, whereas propiconazole, trifloxystrobin, and chlorothalonil often provide good to excellent control under moderate GLS pressure. SA and TF germ plasm has a wide range of resistance to GLS, but little natural resistance has been reported for PRG." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Clarke, B. B., and S. S. Vaiciunas. 2001. Best management practices for the control of gray leaf spot. Phytopathology. 91(6):p. S148. |
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| Web URL(s): http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2001.91.6.S147#page=2 Last checked: 10/16/2015 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: SB 599 .P48 |
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