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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-Lincoln, NE |
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| Title: | Biological control of annual white grubs with entomophagous nematodes, 1992 |
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| Source: | Insecticide and Acaricide Tests. Vol. 18, 1993, p. 342. |
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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: Biological control; Cyclocephala lurida; Ochrosidia dillosa; Nematoda; Lolium perenne
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| Geographic Terms: | Nebraska |
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| Abstract/Contents: | "This study was conducted in Lincoln NE on a perennial ryegrass golf course fairway. The turf (99% perennial rye) was maintained at a mowing height of 1.6 cm and thatch accumulation (finger compressed) in the plot area was 0.64 to 1.3 cm. Field conditions at the time of application were: air temperature, 20 degrees C; soil temperature (10-cm depth), 23.9 C; soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.0 to 7.0; water pH, 7.0; soil moisture, 18%. Plots were 3.05 X 3.05 m and the experimental design was a RCB with 4 replications. Insecticides were applied 12 Aug. Treatments were applied with a CO2 sprayer using a LF-4 nozzle at 165.5 KPa and delivering 18.9 liter spray/93 m2. The test area was irrigated prior to application with 0.64 cm of water and periodically syringed during treatment. Immediately following applications, plots were irrigated with approximately 1.3 cm of water. Treatments were evaluated 21 DAT on 2 Sep by removing from each plot nine, 20.3 cm diam turf-soil cores (0.3 m2 total area) to a depth of 7.6 cm and counting the number of surviving grubs. Pretreatment estimates indicated 50-100 SMC/0.09 m2 (12% eggs, 72% firts, 16% second instar) in the test area. Exhibit #326 and Dursban 4 E provided statistically significant reductions in white grub numbers and provided better than 78% grub control. A high degree of variability among plots (CV=96.8) 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. Biological control of annual white grubs with entomophagous nematodes, 1992. Arthropod Manage. Tests. 18:p. 342. |
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