| |
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Scott, Donald H. |
|---|
| Author Affiliation: | Dept. Botany and Plant Pathology, Purdue Univ., West Lafayette, In. |
|---|
| Title: | Evaluation of fungicides for preventive control of dollar spot and brown patch in creeping bentgrass, 1990 |
|---|
| Source: | Fungicide and Nematicide Tests. Vol. 46, 1991, p. 299. |
|---|
| Publishing Information: | St. Paul, MN: American Phytopathological Society |
|---|
| Keywords: | TIC Keywords: Fungicides; Diseases; Disease control; Brown patch; Dollar spot; Agrostis stolonifera; Lanzia; Moellerodiscus; Rhizoctonia solani; Research; Phytotoxicity; Flutolanil; Iprodione; Propiconazole
|
|---|
| Abstract/Contents: | "Fungicide treatments were evaluated on an experimental green at Purdue University. The turf area received conventional golf course green care and was maintained at 0.3 height. Treatments were applied to 3.3 X 6.6 ft plots arranged in a randomized complete block design with 3 replications. Treatments were applied with a hand held CO-2 pressurized sprayer with 11003 LP flat fan nozzles at 22 psi and at a rate of 2 gal/1000 sq ft. Treatments with a 7 day spray interval were applied of 5, 13, 20, 27 Jun, 5, 12, 18, 25 Jul, 2 and 8 Aug. Treatments with a 14 day spray interval were applied on 5, 20 Jun, 5, 18 Jul and 2 Aug. Treatments with a 21 day spray interval were applied on 5, 27 Jun, 18 Jul, and 8 Aug. Treatments with a 28 day spray interval were applied on 5 Jun, 5 Jul and 2 Aug. Disease ratings were made weekly. Ratings for dollar spot are given for 3 dates in Jun when disease incidence was increasing and reached its maximum levels. Data for a single rating date is given for brown patch when it reached its maximum level. Rainfall was above normal for the growing season, and especially through middle Jun. Temperatures for the growing season were below normal. Dollar spot first appeared in the plot area on 5 Jun, the day the first fungicide applications were made. The disease continued to develop in intensity until 28 Jun at which time dollar spot was extremely severe throughout the test area. Disease severity declined after 28 Jun, but remained active at lower levels throughout the growing season. Brown patch appeared rather uniformly in the test area on 28 Aug, which was about 20 days after the last treatments were applied. Brown patch severity was moderate and short-lived in this test. Several treatments gave good control of dollar spot, but several were ineffective. The tank mix of Flutolanil with Banner did not adequately control dollar spot, while Banner alone was effective. Chipco 26019, which in past years has provided control for at least 21 days in this plot area, was effective for only 14 days in 1990. Many treatments had significantly less brown patch than the untreated control, even though several were applied more than 20 days before disease development. Notably, Banner at the 2 fl oz rate did not control brown patch, while the 4 fl oz rate did. Moderate phytotoxicity was observed with ASC 66608. At first, plots treated with this fungicide were darker green in color, but leaf necrosis was noted after the third application." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract, with table, only!
Table |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Scott, D. H. 1991. Evaluation of fungicides for preventive control of dollar spot and brown patch in creeping bentgrass, 1990. Fungicide Nematicide Tests. 46:p. 299. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=21418 |
| If there are problems with this record, send us feedback about record 21418. |
| 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) |
