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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Baxendale, F. P.;
Weinhold, A. P.;
Gaussoin, R. E. |
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| Author Affiliation: | Department of Entomology and Department of Horticulture, University of Nebraska, NE |
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| Title: | Influence of application timing of WRC928-12356 on annual white grub control, 1992 |
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| Source: | Insecticide and Acaricide Tests. Vol. 18, 1993, p. 321. |
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| Publishing Information: | Lanham, MD: Entomological Society of America |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Poa pratensis; Insecticide application; Lolium perenne; Application timing; Insect control; Ochrosidia dillosa
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| Geographic Terms: | Nebraska |
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| Abstract/Contents: | "This study was conducted in Lincoln, NE on a Kentucky bluegrass (50%) and perennial rye (50%) golf course rough. The turf was maintained at a mowing height of 3.8 cm and thatch matter, 3-5%; soil pH, 6.0 to 7.0; water pH, 7.0; soil moisture, near field capacity. Plots were 2.44 X 2.44 m and the experimental design was a RCB with 4 replications. Liquid formulations of WRC928-12356 were applied 10,17, 24 and 31 Aug. Some plots treated 10 and 17 Aug received a second application on 24 Aug and 31 Aug, respectively. Triumph 4 E was applied 17 Aug at the time of estimated 99% SMC egg hatch (based on light trap monitoring of the SMC beetle flight). Subsequent light trap collections and projections of oviposition and egg development, indicated 99% egg death occurred approximately 16 Aug at the study site. Insecticides were applied using a CO2 sprayer using a LF-4 nozzle at 165.5 KPa and 18.9 liter/93 m2. Product efficacy was evaluated 22 Sep (22 days following the last application) by removing six, 20.3 cm diam turf-soil cores (0.19 m2 total area) to a depth of 7.6 cm, from a 1.22 X 1.22 m section in the center of each plot. Numbers of surviving grubs were recorded. The southern masked chafer age class distribution at evaluation was 1% second instar and 99% third instar grubs. Triumph 4 E and the 10 Aug application of WRS928-12356 provided statistically significant reductions in white grub numbers. All other treatments (including those receiving multiple applications resulted in white grub reductions that were not significantly different from the untreated check. A high degree of variability among plots (CV=90.1) resulted in relatively poor separation of means. No phytotoxicity was observed." |
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| Language: | English |
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| References: | 0 |
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| Note: | Table
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baxendale, F. P., A. P. Weinhold, and R. E. Gaussoin. 1993. Influence of application timing of WRC928-12356 on annual white grub control, 1992. Arthropod Manage. Tests. 18:p. 321. |
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