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Web URL(s): | https://dl.sciencesocieties.org/publications/its/articles/13/1/566 Last checked: 10/15/2019 Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Thompson, Cole;
Kennelly, Megan;
Fry, Jack;
Sousek, Matt;
Reicher, Zac |
Author Affiliation: | Thompson and Sousek: Dep. of Agronomy and Horticulture, Univ. of Nebraska, Lincoln, Lincoln, NE; Kennelly: Dep. of Plant Pathology, Kansas State University, Manhattan, KS; Fry: Dep. of Horticulture, Forestry and Recreation Resources, Kansas State University, Manhattan, KS; Reicher: Bayer Environmental Science, Denton, NE |
Title: | Physiological and pathogenic contributors to the summer decline of roughstalk bluegrass |
Section: | Physiology and stress physiology Other records with the "Physiology and stress physiology" Section
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Meeting Info.: | New Brunswick, New Jersey: July 16-21, 2017 |
Source: | International Turfgrass Society Research Journal. Vol. 13, 2017, p. 1-9. |
Publishing Information: | s.l.: International Turfgrass Society |
# of Pages: | 9 |
Abstract/Contents: | "Roughstalk bluegrass (Poa trivialis L.) is a cool season perennial turfgrass species that is more sensitive to heat stress than other cool-season grasses. This sensitivity has been associated with increased rates of respiration compared with photosynthesis, or an inability to hydrolyze carbohydrates to simple sugars for metabolism during heat stress, but may also involve common turfgrass diseases, since roughstalk bluegrass has been shown to maintain quality from repeated applications of strobilurin fungicides in summer. Our objective was to differentiate between physiological and pathogenic contributors to roughstalk bluegrass decline and determine the effects of strobilurin fungicides on its growth and physiology. Roughstalk bluegrass was treated with azoxystrobin (Heritage 50 WDG or Heritage TL) at 610 g a.i. ha-1 or pyraclostrobin (Insignia 20 WG or Insignia SC) at 556 g a.i. ha-1 prior to summer heat stress in field plots in Manhattan, KS, (2011 and 2012) and Mead, NE (2012). Fungicides improved quality and percentage green cover over untreated roughstalk bluegrass in all studies, but fungicides rarely affected rooting or rates of gross photosynthesis. Disease sampling did not reveal any fungal pathogen consistently associated with summer turf decline. Our data suggest that nontarget physiological effects of strobilurin fungicides likely increased quality and cover over untreated roughstalk bluegrass during summer." |
Language: | English |
References: | 26 |
Note: | TIC-hosted web link available 2 years after publication date. Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Thompson, C., M. Kennelly, J. Fry, M. Sousek, and Z. Reicher. 2017. Physiological and pathogenic contributors to the summer decline of roughstalk bluegrass. Int. Turfgrass Soc. Res. J. 13:p. 1-9. |
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| Web URL(s): https://dl.sciencesocieties.org/publications/its/articles/13/1/566 Last checked: 10/15/2019 Access conditions: Item is within a limited-access website |
| MSU catalog number: b2394179 |
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