| |
| Publication Type:
| Report |
|---|
| Author(s): | Scott, D. H. |
|---|
| Author Affiliation: | Purdue University |
|---|
| Title: | Evaluation of Fungicides for Control of Dollar Spot in Creeping Bentgrass, 1986. |
|---|
| Source: | Fungicide and Nematicide Tests. Vol. 42, 1987, p. 156. |
|---|
| Publishing Information: | St. Paul: American Phytopathological Society |
|---|
| Keywords: | TIC Keywords: Agrostis; Dollar spot; Fungicides
|
|---|
| Abstract/Contents: | "Fungicide treatments were evaluated on an experimental green at Purdue University. The turf received convetional golf course green care and was maintained at 0.2 in height. Treatments were applied to 3.3 ft x 6.6 ft plots arranged in a randomized complete block design with three replications. A 3.3 ft untreated buffer strip was left between treated plots to reduce interplot interference. Treatments were applied with a hand held CO2 pressurized sprayer at 22 psi with a 9504E Tee Jet nozzle at a rate of 2 gal/1000 sq ft. Untreated control plots were sprayed with water only. All treatments were first applied on 28 May. Thereafter, Cadminate was applied on 24 Jun (30 day schedule), and Daconil 2787 at 3.0 fl oz and Actidione TGF at 1.0 oz treatments were applied on 18, 27 Jun, 11 and 21 Jul (approximating a 10 day schedule). All other treatments were applied thereafter on 18 Jun and 11 Jul (approximating a 21 day schedule). The number of infection centers/plot were recorded on 28 May, 9, 24 Jun, 15, 21, 29 Jul, 19 and 26 Aug. A low incidence of dollar spot was first observed in the experimental area on 27 May. The disease continued to increase in severity through Jun and reached severe proportions by mid Jul. Disease severity then moderated until Aug when it became severe. All treatments had significantly less dollar spot than the untreated control throughout the test, except Actidione TGF 2.1W at 0.34 oz, Chipco 26019 50W at 1.0 oz and Rizolex 75DG at 2.1 oz. Chipco 26019 2F at 8.0 fl oz (2.0 oz ai) was superior to Chipco 26019 50W at 4.0 oz (2.0 oz ai). Cadminate 60W at 0.5 fl oz gave effective control of dollar spot for at least 56 days after last treatment, while DPX H6573 40EC at 1.5 oz gave at least 46 days effective control. The DPX H6573 40EC Treatments at 0.38 and 0.75 fl oz gave at least 39 days effective control, and all remaining treatments except Daconil 2787 and Actidione TGF gave at least 25 days effective control after the last application. Daconil 2787 4.17F at 3.0 fl oz and Actidione TGF 2.1W at 1.0 oz gave effective control for only up to 15 days after last treatment. Slight phytotoxicity was noted on 24 Jun only with DPX H6573 at 1.5 fl oz and DPX H 6573 0.38 fl oz + Tersan 1991 1.0 oz. Moderate phytotoxicity was observed on 24 Jun only with Actidione TGF at 1.0 oz and Prochloraz 3.0 oz + Actidione TGF 0.34 oz." lea on 24 Jun only with DPX H6573 at 1.5 fl oz and DPX H 6573 0.38 fl oz + Tersan 1991 1.0 oz. |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | Table |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Scott, D. H. 1987. Evaluation of Fungicides for Control of Dollar Spot in Creeping Bentgrass, 1986.. Fungicide Nematicide Tests. 42:p. 156. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=14054 |
| If there are problems with this record, send us feedback about record 14054. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: SB 951.3 .F82 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
