| |
| Publication Type:
| Report |
|---|
| Author(s): | Soika, M. D.;
Sanders, P. L. |
|---|
| Author Affiliation: | Department of Plant Pathology, Pennsylvania State University |
|---|
| Title: | Residual Efficacy of Fungicide seed Treatments in Suppression of Pythium Aphanidermatum on Seedling, Pot-Grown Creeping Bentgrass, Kentucky Bluegrass, and Perennial Ryegrass |
|---|
| Source: | Fungicide and Nematicide Tests. Vol. 43, 1988, p. 278-279. |
|---|
| Publishing Information: | St. Paul: American Phytopathological Society |
|---|
| Keywords: | TIC Keywords: Agrostis stolonifera; Poa pratensis; Lolium perenne; Pythium diseases
|
|---|
| Abstract/Contents: | "'Seaside' creeping bentgrass, 'Park' Kentucky bluegrass, and 'Premier' perennial ryegrass which had been treated with the test fungicides by Gustafson, Inc., Dallas TX, were seeded into pasteurized sand in 10 cm plastic pots, and topdressed with Terragreen soil conditioner. A seeding rate of approximately six times the normal field rate was employed. To obtain a uniform grass stand across species, bentgrass was seeded at 0.25 g per pot, bluegrass at 1.0 g, and ryegrass at 1.75 g. Pots were kept moist with mist until emergence, after which grass was irrigated as required. Following emergence, grass was fertilized weekly with 20:20:20 soluble fertilizer. Inoculations were made at 10, 18, 21, 24 and 27 days post-feeding by placing uniform quantities of Pythium aphanidermatum-infested ryegrain in the center of the grass area pots. Following inoculation, pots were covered with individual polyethylene bags and placed on shaded greenhouse benches at 32-35 C until nontreated grass was completely blighted. Each treatment was replicated three times, and nontreated checks were included for comparison. Disease severity was evaluated by estimating percent blighting in each pot. Excellent control was obtained on all grasses through 24 days post-seeding with Apron and Combinations of Apron/Rovral, Apron/Topsin, and Apron/Rovral/Topsin. Efficacy was of much longer duration on perennial ryegrass than on the other two grass species. This finding is probably related to the greater amount of fungicide present on the larger ryegrass seeds, and indicates that more concentrated fungicide formulations may be required for treating small-seeded grasses. Since these experiments were conducted using a sand growth medium, the uptake and efficacy duration of the test fungicides would be maximized, and results cannot be extrapolated to field situations." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Soika, M. D., and P. L. Sanders. 1988. Residual Efficacy of Fungicide seed Treatments in Suppression of Pythium Aphanidermatum on Seedling, Pot-Grown Creeping Bentgrass, Kentucky Bluegrass, and Perennial Ryegrass. Fungicide Nematicide Tests. 43:p. 278-279. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=13280 |
| If there are problems with this record, send us feedback about record 13280. |
| 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) |
