| |
Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2000/55-534.pdf Last checked: 05/04/2017 Requires: PDF Reader |
Publication Type:
| Report |
Author(s): | Watkins, John;
Wit, L. A. |
Author Affiliation: | Watkins: Department of Plant Pathology; and Wit: Department of Horticulture, University of Nebraska, Lincoln, NE |
Title: | Evaluation of fungicides for control of gray leaf spot of perennial ryegrass, 1999 |
Section: | Turf grass reports Other records with the "Turf grass reports" Section
|
Source: | Fungicide and Nematicide Tests. Vol. 55, 2000, p. 534. |
Publishing Information: | St. Paul, MN: American Phytopathological Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Disease control; Disease severity; Application rates; Lolium perenne; Gray leaf spot; Pyricularia grisea; Fungicides; Fungicide evaluation
|
Abstract/Contents: | "Plots were located on a blend of perennial ryegrasses at the John Seaton Anderson Turf and Ornamental Research Facility at the University of Nebraska Agricultural Research and Development Center near Mead, NE. Plots were mowed weekly at a height of 1.0 in. and irrigated to maintain at 100% ETp. Preemergence weed control was with Tupersan at 8 lb/acre applied in early May. The plot area was overseeded in late Jun with a perennial ryegrass blend and was inoculated in early Jul and again in mid-Jul with Pyricularia grisea cultured on sterlized tall fescue seed. Preventive fungicide treatments were applied to 25 sq ft plots using a CO₂ pressurized (30 psi) backpack sprayer with a flat fan nozzle. The sprayer was calibrated to deliver 5 gal spray solution per 1000 sq ft. Three replications per treatment were arranged in a randomized complete block design. Precipitation was above normal in Apr and May and below normal in Jun to Sep. Temperatures were above normal during Jul with an intermittent cool period in early Aug. Temperatures were moderate during the first half of Sep. Soil type at this site is a Sharpsburg silty clay loam with a pH of 7.2. Sulfur-coated urea (32-0-0) was applied in mid-Jun at 1 lb. N/1000 sq ft. Gray leaf spot prevalence was moderate during Aug and moderately sever during early Sep. All treatments had significantly less gray leaf spot than the nontreated check. There were no significant differences between treatments. Heritage 50WG applied on a 21-day treatment interval was slightly less effective than on a 14-day treatment interval. Similar results were noted for Eagle 40W on a 28-day treatment interval as compared to the 14-day treatment interval. The differences in gray leaf spot prevalence between treatment intervals for both products, however, was not significant. Junction at 8 oz/1000 sq ft and Pentathlon 4F at 12.8 fl oz/1000 sq ft were slightly more effective than the respective products at 4 or 6 oz and 9.6 fl oz, but the differences were not significant. No phytotoxicity was observed with any of the products applied." |
Language: | English |
References: | 0 |
Note: | Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Watkins, J., and L. A. Wit. 2000. Evaluation of fungicides for control of gray leaf spot of perennial ryegrass, 1999. Fungicide Nematicide Tests. 55:p. 534. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=70144 |
| If there are problems with this record, send us feedback about record 70144. |
| Choices for finding the above item: |
| Web URL(s): https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2000/55-534.pdf Last checked: 05/04/2017 Requires: PDF Reader |
| MSU catalog number: SB 951.3 .F82 |
| Find from within TIC: Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |