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| Publication Type:
| Report |
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| Author(s): | Johnson, James W.;
Boston, Steven L. |
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| Author Affiliation: | Dept. of Entomology, University of Missouri, Columbia. |
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| Title: | Fall Control of Annual White Grubs Using Artificial Infestations, 1987. |
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| Source: | Insecticide and Acaricide Tests. Vol. 13, 1988, p. 337-338. |
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| Publishing Information: | Lanham, MD:Entomological Society of America |
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| Keywords: | TIC Keywords: Poa pratensis; Cyclocephala lurida; Control; Autumn; Insecticides; Carbaryl; Isazophos; Bendiocarb; Ethoprophos; Fenpropathrin
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| Abstract/Contents: | "Plugs of bluegrass turf were cut with a standard 6-inch cup cutter and potted into 6-inch-diam X 6-inch-deep plastic pots on 17 Sep. Larvae of the southern masked chafer, Cyclocephala immaculata were placed into these pots at the rate of 4/pot. Pots were dampened to ensure survival of turf. Treatments were applied 21 Sep to pots arranged in a randomized complete block design with 3 replications. Pots were placed in a 5- X 5-ft plot with treatments applied to this area. Liquid treatments were applied with an R&D Systems CO2 pistol belt sprayer with Delavan LF-3 nozzles calibrated to deliver 30 gal of dilute spray/acre at 30 psi. Granular treatments were applied with a shaker bottle to apply the product evenly over the treatment area. Clay granules were added to granular treatments to a uniform weight of 30 g to ensure even distribution of the products. Approximately 0.5 inches of water was applied with sprinklers to the plots within 2 h of application. Additionally, 0.5 inches was applied 25 Sep; 1 inch of rainfall occurred on 28 Sep. The split-rate trial of DZN AG500 had one-half labeled rate (1.98 lb (AI)/acre) applied on 21 Sep, and again on 28 Sep. As the soil was already wet from the inch of rain fall during the previous 24-hr period, only 0.25 inches was applied to the DZN split-rate treatments. Data were taken on 24 Sep (72h), 28 Sep (1 wk), and 5 Oct (2 wk). Sample cores were carefully torn apart, and all grubs recovered from each replicate. The number of living and dead grubs were recorded. The summary % dead figure represents all replicates over all 3 time periods; a total of 36 grubs is used in calculating the summary % dead. Of the labeled compounds, DZN 14G, the split application of DZN AG500, and Triumph 4E performed equally well. The 40-45% kill at 3 wk is not excellent, but acceptable considering the large size of the grubs. Danitol and UBI 8451 provided excellent control, especially during the first 2 sampling periods. Standard materials such as Mocap and Turcam may not have had sufficient time to act, as the data show the number of grubs killed increased each sampling period." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Johnson, J. W., and S. L. Boston. 1988. Fall Control of Annual White Grubs Using Artificial Infestations, 1987.. Arthropod Manage. Tests. 13:p. 337-338. |
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MSU catalog number: SB 951 .A1 I48 |
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