Full TGIF Record # 234419
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Author(s):Soika, M. D.; Sanders, P. L.
Author Affiliation:Department of Plant Pathology, The Pennsylvania State University, University Park, Pennsylvania
Title:Effect of various nitrogen sources, organic amendments, and biological control agents on turfgrass quality and disease development, 1990
Source:The Keynoter. Spring 1990, p. 3.
# of Pages:1
Publishing Information:Lemont, Pennsylvania: The Pennsylvania Turfgrass Council, Inc.
Abstract/Contents:"This study was conducted at the Valentine Turfgrass Research Center, University Park, PA, on creeping bentgrass maintained under golf course greens management conditions at 0.16 inch cutting height. The test area was fertilized on 4 Apr with LESCO 32-3-10 at 3lbs per 1000 sq. ft. Individual plots, 3ft * 15ft, were arranged in a randomized complete block design with five replications. On 9 May and 1 Aug, three core samples were taken from each individual plot for pre-and post-treatment soil analysis and thatch measurement. The test area was core-cultivated on 15 May, and aerifier holes were left open to facilitate movement of biological and organic amendments into the soil. The experimental area was inoculated on 11 Jun and 10 Jul by hand-scattering S. homoeocarpa -infected rye grain over the entire test area. Treatments were applied with hand-scattered from shaker-top jars. Applications were made on 5 Jun, 3 Jul, and Aug, except as noted in the table. The checks and treatments without a fertilizer component wew fertilized with 0.2 lb N per 1000 sq ft (urea/46-0-0) on 11 and 25 Jul and 9 Aug. Dollar sot and brown patch were visually evaluated on 17 Jul. Turfgrass quality was rated on 14 Aug. Data obtained were subjected to analysis of variance and Waller-Duncan K-ratio test. Excellent suppression of brown patch was obtained with Ringer Experimental 1, Ringer Experimental 2, Sustane, and ASC 66912. Ringer Experimental 1 and ASC 66912 provided suppression of dollar spot that was statistically different from the check, and not statistically different from the Dyrene standard. Plots treated with Dyrene and ASC 66912 were rated highest in overall turf quality. Average thatch depth was unchanged (2.0 cm) during the May-Aug period of the experiment."
Note:Reprint appears in A Patch of Green, November/December 1990, p. 24
Reprint appears in Turfgrass Research Results 1990/1991 [Penn State], 1991, p. 31-32
Reprint appears in Biological and Cultural Tests for Control of Plant. Vol. 6 1991, p. 91
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Soika, M. D., and P. L. Sanders. 1990. Effect of various nitrogen sources, organic amendments, and biological control agents on turfgrass quality and disease development, 1990. Keynoter. p. 3.
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