| |
| Publication Type:
| Report |
|---|
| Author(s): | Parish, P. J.;
Sanders, P. L. |
|---|
| Author Affiliation: | Dept. of Plant Pathology, The Pennsylvania State University, University Park, Pennsylvania |
|---|
| Title: | Control of Pythium Blight with Fungicide Treatments, 1985. |
|---|
| Source: | Fungicide and Nematicide Tests. Vol. 41, 1986, p. 161. |
|---|
| Publishing Information: | St. Paul: American Phytopathological Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Lolium perenne; Poa annua; Pythium diseases; Fungicides; Control
|
|---|
| Abstract/Contents: | "Fungicides were evaluated at the Valentine Turfgrass Research center, University Park, PA, on a mixed stand of perennial ryegrass and annual bluegrass, maintained under home lawn/golf course fairway management conditions. The turf was fertilized 30 Mar with 0.5 lb actual N(10-6-4) and on 2 Jun with 0.5 lb actual N(NH4NO3). Tersan 1991 at 1.0 oz/1000 sq ft and cadminate at 0.5 oz/1000 sq ft were applied on 13, 19, and 26 Jul, and 2 Aug to control large brown patch and real thread in the experimental area. Individual treatment plots, 3 ft x 18 ft, were arranged in a randomized complete block design with 3 replications. Fungicides were applied with a CO2 powered, boom sprayer with Tee Jet 8004 nozzles, at 30 psi, in water equivalent to 2 gal/1000 sq ft. Treatments were applied once 11 Jul. On 13 Jul, two days after fungicide application, a 3 ft-wide strip across all treatments was inoculated with a 4-isolate pool of Pythium aphanidermatum grown on autoclaved rye grain. Successive weekly inoculations were made 19 and 26 Jul, and 2 Aug (8, 15, and 22 days after treatment), in the same way to evaluate long-term disease suppression. The 3 ft-wide inoculated strip was covered, following inoculation, with PVC pipe-framed, translucent plastic-covered humidity chambers, containing intermittent mist to maintain a saturated atmosphere and to minimize radiational cooling at night. Chamber ends were open and two 1-minute mists/hr were applied during daylight hours. At night, chamber ends were closed and no mist was applied. After approximately one week incubation, the chambers were removed and the inoculated areas were visually rated at 8, 15, 22, and 29 days after treatment. Data obtained were subjected to analysis of variance and Waller-Duncan K-ratio t test. Eight days after treatment, all chemicals, except the 0.5X rate of Banol, were providing excellent control. Disease suppression was effective 15 days after spray application with: the 0.5X mixture of Banol and Subdue; 0.5X mixture of Aliette and Subdue; Subdue 1 oz; and MF 741 and S 1446 at both rates. Only 2 treatments provided suppression 22 days after application, MF 741 at 2 oz and S 1446 at 1.4 fl oz." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | Reprint appears in The Keynoter, 13(3) Spring 1986, p. 4
Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Parish, P. J., and P. L. Sanders. 1986. Control of Pythium Blight with Fungicide Treatments, 1985.. Fungicide Nematicide Tests. 41:p. 161. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=14140 |
| If there are problems with this record, send us feedback about record 14140. |
| 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) |
