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Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Colbaugh, P. F.;
Engelke, M. C. |
Author Affiliation: | Texas Agric. Exp. Station, Dallas |
Title: | Pythium blight on creeping bentgrass. 1991 |
Source: | Biological and Cultural Tests for Control of Plant. Vol. 8, 1993, p. 114. |
Publishing Information: | St. Paul, MN: The American Phytopathological Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Agrostis stolonifera; Pythium aphanidermatum; Disease resistance
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Abstract/Contents: | "Nine commercial varieties and 11 germplasm lines of bentgrass were examined in inoculation studies for resistance to Pythium foliar blight. Nine replicate soil cores per variety entry in the National Turfgrass Evaluation Program were removed four times during the year from a bentgrass green with three completely randomized blocks and transferred to 8 cm diam plastic cups. One of the replicate soil cores of each variety was placed in a covered plastic container and inoculated with an agar disc containing Pythium aphanidermatum (P-24), known to be highly pathogenic on bentgrass. After inoculation, the bentgrass samples were incubated in a lighted walk-in chamber maintained at 28 C and were misted daily for five days with sterile water to favor foliar blighting. The mean percent infection of the bentgrasses varied during the year. The highest percentage of infection was during the Summer and Fall II inoculations which gave an overall mean percent blight rating of 68 and 71% respectively. The lowest ratings occurred during the Spring and Fall I inoculations which each gave 26% blight ratings. Pennlinks, Penncross, National, MSCB-6, SYN3-88 and Cobra were numerically the most resistant genotypes. Providence BR1518 were numerically the most susceptible bentgrasses tested during the one year study." |
Language: | English |
References: | 0 |
Note: | Table This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Colbaugh, P. F., and M. C. Engelke. 1993. Pythium blight on creeping bentgrass. 1991. Biol. Cult. Tests Control Plant Dis. 8:p. 114. |
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