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ANT MOUNDING ON A GOLF COURSE FAIRWAY, 2007

ANT MOUNDING ON A GOLF COURSE FAIRWAY, 2007 (G41) TURFGRASS: Agrostis palustris (Huds) David R. Smitley Department of Entomology 243 Natural Sciences Building Michigan State University East Lansing, MI 48824-1115 Phone: (517) 355-3385 Fax: (517) 353-4354 E-mail: smitley@msu.edu Terrance W. Davis Phone: (517) 353-9672 E-mail: tdavis@msu.edu Turfgrass ant: Lasius neoniger Emery An irrigated bentgrass section of the eighth fairway of the Norway course at a Resort in Cadillac, MI was divided into 9 ft x 9 ft treatment plots with a 3 ft buffer between plots. Each treatment plot was replicated six times. Plots were blocked based on precounts taken on 28 Jun by counting the no. of active ant mounds in each plot. The treatments were applied on 28 Jun with a handheld salt shaker as all of the treatments were granular. The fairway with the applied treatments was not irrigated the night following insecticide applications. The golf course is on sandy soil and the irrigation was run nightly throughout the rest of the test. Plots were evaluated on 5 Jul, 12 Jul, 19 Jul, 25 Jul, 2 Aug, 9 Aug, 23 Aug, 6 Sep and 20 Sep by counting active ant mounds in each plot. All of the compounds tested except Triazicide gave significant ant mounding reduction 7 DAT. At the 70-day and 84-day post application counts, there were no significant differences in ant mounding. There were no significant differences between the untreated checksand any of the compounds containing imidacloprid/synthetic pyrethroid or synthetic pyrethroids by themselves at any time after the 7-day sample. Compounds containing thiamethoxam generally gave greater than 50% reduction in ant mounding throughout the test, with these differences being significant for the first 60 d following application. The A15008B formulation of thiamethoxam/lambda cyhalothrin gave the highest amount of ant mound reduction through the 35-day sample, but the longest period of 50% or greater reduction of mounding was in plots treated with thiamethoxam by itself. Triazicide was not significantly effective in reducing ant mounding at any time during the test. Table 1. Mean number of ant mounds per 81 ft Treatment Rate formulation product/acre 6/28/2007 7/5/2007 7/12/2007 7/19/2007 7/25/2007 8/2/2007 8/9/2007 8/23/2007 9/6/2007 9/20/2007 A11859J 0.22 G 80 lb 32.8a 10.0abc 6.2bc 9.7bcd 11.7bcde 7.8ab 9.2a 5.8ab 7.3a 5.2a A11859G 0.22 G 80 lb 34.2a 11.0bc 6.8bc 8.0ab 9.2ab 10.0abcde 10.2ab 5.2a 7.3a 5.5a A15008B 0.24 G 130 lb 34.2a 4.8a 2.5a 5.7a 7.2ab 6.5a 10.7ab 5.8abc 6.5a 5.8a A15008A 0.24 G 130 lb 36.0a 5.3a 7.3bc 10.5abc 12.3abc 10.5abc 11.3ab 11.3cd 8.7a 4.7a A15008A 0.24 G 87 lb 33.7a 7.2ab 5.0b 8.3ab 11.3abcd 10.3abcd 14.7bc 9.3bcd 8.7a 7.0a Bayer AD 0.2 G 130 lb 33.3a 11.3bc 10.2bcd 13.7bcde 15.8bcde 15.8cdef 17.3cd 11.7d 8.7a 7.3a A14556B 0.04 G 130 lb 32.2a 6.5ab 10.2cde 14.2cde 11.7bcde 15.5bcdef 19.7cd 11.3d 9.7a 6.5a Ortho Bug B Gone 175 lb 32.7a 10.3abc 8.7bcd 20.5e 13.7bcde 20.2f 19.7cd 12.3d 13.2a 9.5a Max 0.115 G Triazicide 0.1 G 52 lb 34.3a 15.8 cd 16.3de 20.8e 18.5de 18.3ef 20.7cd 13.8d 10.5a 8.3a A14556D0.04 G 130 lb 38.7a 8.0abc 19.8e 20.7de 19.3cde 18.3def 31.5d 17.0d 18.0a 12.2a Untreated check --- 33.5a 29.7d 14.5de 19.3de 18.0e 24.3f 23.0cd 12.5d 14.8a 11.2a Means followed by the same letter are not significantly different (LSD < 0.05). Means transformed log+1 prior to ANOVA. Untransformed means are presented in table Table 2. Mean percent reduction in ant mounding from the untreated check mean by date Treatment/ Rate formulation product/acre 6/28/2007 7/5/2007 7/12/2007 7/19/2007 7/25/2007 8/2/2007 8/9/2007 8/23/2007 9/6/2007 9/20/2007 A11859J 0.22 G 80 lb 0.0 66.3 57.5 49.9 35.2 67.8 60.1 53.3 50.5 53.9 3A11859G 0.22 G 80 lb 0.0 63.0 52.9 58.5 49.1 58.8 55.8 58.7 50.5 50.9 A15008B 0.24 G 130 lb 0.0 83.7 82.8 70.6 60.2 73.3 53.6 53.3 56.1 47.9 A15008A 0.24 G 130 lb 0.0 82.0 49.4 45.6 31.5 56.8 50.7 9.3 41.4 58.3 A15008A 0.24 G 87 lb 0.0 75.9 65.5 56.8 37.0 57.5 36.2 25.3 41.4 37.5 Bayer AD 0.2 G 130 lb 0.0 61.8 29.9 29.2 12.0 34.8 24.6 6.7 41.4 34.6 A14556B 0.04 G 130 lb 0.0 78.1 29.9 26.6 35.2 36.2 14.5 9.3 34.7 42.0 Ortho Bug B Gone 175 lb 0.0 65.2 40.2 0.0 24.1 17.0 14.5 1.3 11.0 15.2 Max 0.115 G Triazicide 0.1 G 52 lb 0.0 46.7 0.0 0.0 0.0 24.6 10.1 0.0 29.1 25.6 A14556D0.04 G 130 lb 0.0 73.1 0.0 0.0 0.0 24.6 0.0 0.0 0.0 0.0 Untreated check --- 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

ANT MOUNDING ON A GOLF COURSE FAIRWAY, 2007

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Oxford University Press
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2155-9856
DOI
10.1093/amt/33.1.G41
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Abstract

(G41) TURFGRASS: Agrostis palustris (Huds) David R. Smitley Department of Entomology 243 Natural Sciences Building Michigan State University East Lansing, MI 48824-1115 Phone: (517) 355-3385 Fax: (517) 353-4354 E-mail: smitley@msu.edu Terrance W. Davis Phone: (517) 353-9672 E-mail: tdavis@msu.edu Turfgrass ant: Lasius neoniger Emery An irrigated bentgrass section of the eighth fairway of the Norway course at a Resort in Cadillac, MI was divided into 9 ft x 9 ft treatment plots with a 3 ft buffer between plots. Each treatment plot was replicated six times. Plots were blocked based on precounts taken on 28 Jun by counting the no. of active ant mounds in each plot. The treatments were applied on 28 Jun with a handheld salt shaker as all of the treatments were granular. The fairway with the applied treatments was not irrigated the night following insecticide applications. The golf course is on sandy soil and the irrigation was run nightly throughout the rest of the test. Plots were evaluated on 5 Jul, 12 Jul, 19 Jul, 25 Jul, 2 Aug, 9 Aug, 23 Aug, 6 Sep and 20 Sep by counting active ant mounds in each plot. All of the compounds tested except Triazicide gave significant ant mounding reduction 7 DAT. At the 70-day and 84-day post application counts, there were no significant differences in ant mounding. There were no significant differences between the untreated checksand any of the compounds containing imidacloprid/synthetic pyrethroid or synthetic pyrethroids by themselves at any time after the 7-day sample. Compounds containing thiamethoxam generally gave greater than 50% reduction in ant mounding throughout the test, with these differences being significant for the first 60 d following application. The A15008B formulation of thiamethoxam/lambda cyhalothrin gave the highest amount of ant mound reduction through the 35-day sample, but the longest period of 50% or greater reduction of mounding was in plots treated with thiamethoxam by itself. Triazicide was not significantly effective in reducing ant mounding at any time during the test. Table 1. Mean number of ant mounds per 81 ft Treatment Rate formulation product/acre 6/28/2007 7/5/2007 7/12/2007 7/19/2007 7/25/2007 8/2/2007 8/9/2007 8/23/2007 9/6/2007 9/20/2007 A11859J 0.22 G 80 lb 32.8a 10.0abc 6.2bc 9.7bcd 11.7bcde 7.8ab 9.2a 5.8ab 7.3a 5.2a A11859G 0.22 G 80 lb 34.2a 11.0bc 6.8bc 8.0ab 9.2ab 10.0abcde 10.2ab 5.2a 7.3a 5.5a A15008B 0.24 G 130 lb 34.2a 4.8a 2.5a 5.7a 7.2ab 6.5a 10.7ab 5.8abc 6.5a 5.8a A15008A 0.24 G 130 lb 36.0a 5.3a 7.3bc 10.5abc 12.3abc 10.5abc 11.3ab 11.3cd 8.7a 4.7a A15008A 0.24 G 87 lb 33.7a 7.2ab 5.0b 8.3ab 11.3abcd 10.3abcd 14.7bc 9.3bcd 8.7a 7.0a Bayer AD 0.2 G 130 lb 33.3a 11.3bc 10.2bcd 13.7bcde 15.8bcde 15.8cdef 17.3cd 11.7d 8.7a 7.3a A14556B 0.04 G 130 lb 32.2a 6.5ab 10.2cde 14.2cde 11.7bcde 15.5bcdef 19.7cd 11.3d 9.7a 6.5a Ortho Bug B Gone 175 lb 32.7a 10.3abc 8.7bcd 20.5e 13.7bcde 20.2f 19.7cd 12.3d 13.2a 9.5a Max 0.115 G Triazicide 0.1 G 52 lb 34.3a 15.8 cd 16.3de 20.8e 18.5de 18.3ef 20.7cd 13.8d 10.5a 8.3a A14556D0.04 G 130 lb 38.7a 8.0abc 19.8e 20.7de 19.3cde 18.3def 31.5d 17.0d 18.0a 12.2a Untreated check --- 33.5a 29.7d 14.5de 19.3de 18.0e 24.3f 23.0cd 12.5d 14.8a 11.2a Means followed by the same letter are not significantly different (LSD < 0.05). Means transformed log+1 prior to ANOVA. Untransformed means are presented in table Table 2. Mean percent reduction in ant mounding from the untreated check mean by date Treatment/ Rate formulation product/acre 6/28/2007 7/5/2007 7/12/2007 7/19/2007 7/25/2007 8/2/2007 8/9/2007 8/23/2007 9/6/2007 9/20/2007 A11859J 0.22 G 80 lb 0.0 66.3 57.5 49.9 35.2 67.8 60.1 53.3 50.5 53.9 3A11859G 0.22 G 80 lb 0.0 63.0 52.9 58.5 49.1 58.8 55.8 58.7 50.5 50.9 A15008B 0.24 G 130 lb 0.0 83.7 82.8 70.6 60.2 73.3 53.6 53.3 56.1 47.9 A15008A 0.24 G 130 lb 0.0 82.0 49.4 45.6 31.5 56.8 50.7 9.3 41.4 58.3 A15008A 0.24 G 87 lb 0.0 75.9 65.5 56.8 37.0 57.5 36.2 25.3 41.4 37.5 Bayer AD 0.2 G 130 lb 0.0 61.8 29.9 29.2 12.0 34.8 24.6 6.7 41.4 34.6 A14556B 0.04 G 130 lb 0.0 78.1 29.9 26.6 35.2 36.2 14.5 9.3 34.7 42.0 Ortho Bug B Gone 175 lb 0.0 65.2 40.2 0.0 24.1 17.0 14.5 1.3 11.0 15.2 Max 0.115 G Triazicide 0.1 G 52 lb 0.0 46.7 0.0 0.0 0.0 24.6 10.1 0.0 29.1 25.6 A14556D0.04 G 130 lb 0.0 73.1 0.0 0.0 0.0 24.6 0.0 0.0 0.0 0.0 Untreated check --- 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2008

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