| |
| Publication Type:
| Report |
|---|
| Author(s): | Schultz, T. R.;
Johnston, W. J.;
Golob, C. T. |
|---|
| Author Affiliation: | Department of Crop and Soil Sciences, Washington State Univ. |
|---|
| Title: | Control of ergot in Kentucky bluegrass seed production using fungicides and wetting agents, 1992 |
|---|
| Source: | Fungicide and Nematicide Tests. Vol. 48, 1993, p. 364. |
|---|
| Publishing Information: | St. Paul, MN: American Phytopathological Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Poa pratensis; Claviceps purpurea; Ergot; Seed production; Fungicide application; Disease evaluation; Phytotoxicity; Wetting agents
|
|---|
| Abstract/Contents: | "Fungicide trials were conducted in a commercial Kentucky bluegrass seed production field near Post Falls, ID. Individual treatment plots were 10 x 20 feet with four replications in a randomized complete-block design. Three fungicides were applied alone and in combination with two wetting agents, Penaturf and Sylgard, at 34, 338, and 676 oz. per acre. Treatments were applied with a CO2 pressurized boom sprayer at 40 psi using a 28 gal/acre carrier rate on 28 May (early anthesis). Plots were rated for disease severity and phytotoxicity on 26 June by visually observing the amount of sclerotia and seedhead exudate (honeydew) on the panicles. On 26 June, 30 to 50 panicles were harvested by hand from each plot and the mean weight of clean seed and sclerotia per panicle were determined. Warm, dry spring weather and a short bluegrass flowering period in northern Idaho during 1992 was not conducive for ergot development. Consequently, disease severity was low in all plots and only small differences in disease control were observed among the treatments. Disease control was not significantly different between fungicide and fungicide-wetting agent combinations except when using 676 oz. of Sylgard. Phytotoxicity was observed when fungicides were used in combination with 338 or 676 oz. of Sylgard. Phytotoxicity was not observed with any other treatment. Seed yield per panicle was relatively high among all treatments except those combined with the high rates of Sylgard. The highest seed yield per panicle was observed when each fungicide was combined with the lowest rate (34 oz.) of Sylgard, although they were not significantly higher than the nontreated control. Sclerotia yield per 100 panicles was reduced by all treatments compared to the nontreated control." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| See Also: | Other items relating to: Wetting Agents |
|---|
| Note: | Table |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Schultz, T. R., W. J. Johnston, and C. T. Golob. 1993. Control of ergot in Kentucky bluegrass seed production using fungicides and wetting agents, 1992. Fungicide Nematicide Tests. 48:p. 364. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=30045 |
| If there are problems with this record, send us feedback about record 30045. |
| 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) |
