Full TGIF Record # 1015
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Author(s):Menn, W. G.; Beard, J. B.; Grisham, M. P.; Toler, R. W.
Author Affiliation:Turfgrass Instructor; Professor, Turfgrass Physiology and Management, The Texas Agricultural Experiment Station, Department of Soil and Crop Sciences; Assistant Professor, Turfgrass Pathology; and Professor of Plant Virology, The Texas Agricultural Experiment Station, Department of Plant Pathology and Microbiology, College Station, Texas
Title:1983 St. Augustinegrass cultivar characterizations - including brown patch susceptibility
Other records with the "Turfgrasses" Section
Source:Texas Turfgrass Research - 1984. 1984, p. 45-49.
# of Pages:5
Publishing Information:College Station, TX: Texas Agricultural Experiment Station.
Series:Consolidated PR 4269-4289
Keywords:TIC Keywords: Stenotaphrum secundatum; Shoot density; Thanatephorus cucumeris; Cold resistance; Cultivars; Quality; Leaf width; Adaptation; Growth habit; Internode length
Abstract/Contents:Texas A & M University Turfgrass Field Laboratory is the site where nine St. Augustinegrass clutivars are being tested. Six of the cultivars were vegetatively established in August of 1978, two vegetatively established in July of 1979, and one vegetatively established in July of 1982. Floratum, Garretts 141, NCSA-21 (Raleigh), Scott's 516 (Seville), Scott's 1081, and Texas common were all cultivars planted in 1978. Bitter Blue and Floratine were the cultivars planted in 1979 with FA 108 being the only cultivar planted in 1982. Each plot was six feet by nine feet with the cultivars being mowed at two inches. All cultivars received 0.5 pound of actual nitrogen per 1000 square feet per growing month and enough water to prevent visual wilt. No curative pesticide was used on plots. Categories measured were: turfgrass quality, internode length and diameter, leaf width, shoot density, and brown patch susceptibility. The following results are for the fourth year of full growth on all cultivars tested. Garrett's 141 produced the shortest internode length while FA 108 had the longest internode length. The other seven cultivar lengths were almost identical. Internode diameter found Garrett's 141 with the smallest while Floratam and FA 108 had the thickest. Leaf width results found Seville and Garrett's 141 to be the finest textured while Floratam had the coarsest leaf texture. The other six cultivars had relatively the same texture. Shoot density evaluation found Seville, Scott's 1081, Bitter Blue, and Texas Common to have significantly denser stands while FA 108 showed low shoot density. Checking 1983 results found Floratine to have denser shoots but NCSA-21 (Raleigh) had a considerable shoot density drop. After four years maturation, nine of the cultivars were hit with Brown Patch. Results showed FA 108, Floratam, and Bitter Blue to be the least susceptible to brown patch. Cultivars showing the most susceptibility to brown patch were: Scott's 1081, Texas Common, and Florantine, followed closely by Seville and Garratt's 141. Spring evaluation of 1984 showed those areas hit by brown patch had more severe damage from low temperature kill. No final results or conclusions are possible, since the test has two more years to run before they will be compiled.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Menn, W. G., J. B. Beard, M. P. Grisham, and R. W. Toler. 1984. 1983 St. Augustinegrass cultivar characterizations - including brown patch susceptibility. Tex Turfgrass Res. p. 45-49.
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