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| Web URL(s): | https://listings.lib.msu.edu/iowat/1991.pdf#page=59
Last checked: 01/10/2017
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Kassmeyer, S. M.;
Lewis, D. R.;
Agnew, M. L.;
Christians, N. E. |
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| Author Affiliation: | Kassmeyer is a Technical Assistant, field research area; Lewis is an Associate Professor, Extension Entomologist, Entomology Department, Iowa State University, Ames, IA; Agnew is an Associate Professor, Extension Turfgrass Specialist, Horticulture Department, Iowa State University, Ames, IA; Christians is a Professor, Turfgrass Science, Iowa State University, Ames, Iowa |
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| Title: | Controlling adult bluegrass billbugs in Kentucky bluegrass--1990 |
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| Source: | 1991 Iowa Turfgrass Research Report. July 1991, p. 54-55. |
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| Publishing Information: | Ames, Iowa: Iowa State University |
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| Keywords: | TIC Keywords: Sphenophorus; Poa pratensis; Insecticides; Festuca rubra subsp. rubra
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| Abstract/Contents: | "Damage resulting from the bluegrass billbug Sphenophorus parvulus Gyll. is generally not observed until late summer when it is too late to chemically treat the billbugs. A more effective means of controlling the bluegrass billbug is to kill the adult billbug before egg laying in April or early May. The objective of this field test was to study the effectiveness of 12 insecticide treatments in controlling adult bluegrass billbugs in the spring as they emerge. This study was conducted on a home lawn in Fort Dodge, Iowa, with the help of Myron Groat, owner ABC Lawn Care. The testing area consisted of Kentucky bluegrass, Poa pratensis L. and red fescue, Festuca rubra L. An apparent thatch layer was present. The area consisted of 12 insecticide treatment plots and one untreated check plot, randomly assigned, and replicated three times (Table 26). Each plot consisted of a 5 ft by 5 ft2 area. The testing area was partially shaded during late afternoon. The plot area was mowed at 2 1/2 inc and received record rainfalls in May, June, and July. Larvae damage from the previous year was apparent and adult bluegrass billbugs were found before treatments were applied. The insecticide treatments were applied on April 20, 199,0 [1990,] with a carbon-dioxide backpack sprayer attached to a Chemlawn gun. The plots were evaluated for billbug damage on July 7, 1990 (Table 26). Very few larvae were observed in the test area. Each plot was rated on a scale of 0 to 10, with 0 equalling no injury and 10 equalling 100% injury. Very little damage was observed in the test area. No significant differences were observed by the July 7th rating. The lack of billbug activity on this particular site was unexpected. This lawn had billbug damage the previous three years. The only difference was that climatic conditions of 1987 through 1989 were dry. In 1988, which was the hottest and driest on record, billbug damage to this lawn was extensive. In 1990, the rainfall of Fort Dodge hit an all-time high. Over 35 in of rainfall were registered by August 1. The excessive rains either masked billbug injury or prevented a viable hatching in 1990." |
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| Language: | English |
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| References: | 0 |
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| Note: | Article appears as abstract
Table |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kassmeyer, S. M., D. R. Lewis, M. L. Agnew, and N. E. Christians. 1991. Controlling adult bluegrass billbugs in Kentucky bluegrass--1990. Iowa Turfgrass Res. Rep. p. 54-55. |
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| Web URL(s):
https://listings.lib.msu.edu/iowat/1991.pdf#page=59
Last checked: 01/10/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 I55 |
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