| |
| Web URL(s): | http://usgatero.msu.edu/v08/n02.pdf
Last checked: 03/02/3009
Requires: PDF Reader |
|---|
| Publication Type:
| Report |
|---|
| Author(s): | McDonald, Steven J.;
Dernoeden, Peter H.;
Bigelow, Cale A. |
|---|
| Author Affiliation: | McDonald: President, Turfgrass Disease Solutions, Limited, Spring City, Pennsylvania; Dernoeden: Professor, Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland; Bigelow: Associate Professor of Agronomy, Purdue University, West Lafayette, Indiana |
|---|
| Title: | Irrigation frequency in late summer impacts dollar spot severity and the ability of chemicals to control the disease |
|---|
| Source: | USGA Turfgrass and Environmental Research Online. Vol. 8, No. 2, January 15 2009, p. [1-8]. |
|---|
| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
|---|
| # of Pages: | 10 |
|---|
| Keywords: | TIC Keywords: Irrigation frequency; Dollar spot; Disease severity; Disease control; Chemical control; Irrigation practices; Agrostis stolonifera; Chlorothalonil; Paclobutrazol; Soil moisture
|
|---|
| Abstract/Contents: | "This field study assessed the influence of two irrigation regimes (light and frequent nighttime vs. deep and infrequent morning irrigation) and six chemical treatments (Daconil Ultrex, chlorothalonil; Trimmit 2SC, paclobutrazol; Primer Select, polymeric polyoxyalkylene 95% oxoalkonyl hydroxyl polyoxlalkane diyl 5%; chlorothalonil + Trimmit 2SC, Daconil Ultrex 82.5WDG + Primer Select, and Daconil Ultrex 82.5WDG + Trimmit 2SC + Primer Select) on dollar spot severity on creeping bentgrass maintained at fairway height over a three-year period. Data indicated: Applying a low label rate of Trimmit 2SC alone reduced dollar spot levels in all years. Applying a combination of Daconil Ultrex 82.5WDG + Trimmit 2SC was beneficial in the reduction of dollar spot, but applying a tank-mix of Daconil Ultrex 82.5WDG + Primer Select was not. Dollar spot was more severe in late summer in creeping bentgrass that received deep and infrequent vs. light and frequent irrigation in 2002 and 2004, and disease severity was negatively correlated with volumetric soil moisture. That is, dollar spot was less severe in late summer of 2002 and 2004 in plots that were irrigated daily. This outcome was the opposite of our hypothesis, which was that frequent nighttime irrigation would enhance dollar spot severity. Irrigation frequency during early and mid-summer epidemics had no effect on dollar spot in any year. Soil moisture levels above 25% for this silt loam soil were associated with an improved ability of all three materials to suppress dollar spot." |
|---|
| Language: | English |
|---|
| References: | 9 |
|---|
| See Also: | Other Reports from this USGA research project: 2002-05-235 |
|---|
| Note: | Summary as abstract
Pictures, color
Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McDonald, S. J., P. H. Dernoeden, and C. A. Bigelow. 2009. Irrigation frequency in late summer impacts dollar spot severity and the ability of chemicals to control the disease. USGA Turfgrass Environ. Res. Online. 8(2):p. [1-8]. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=145668 |
| If there are problems with this record, send us feedback about record 145668. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://usgatero.msu.edu/v08/n02.pdf
Last checked: 03/02/3009
Requires: PDF Reader |
| 
MSU catalog number: b3952822a |
| 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) |
