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| Web URL(s): | https://academic.oup.com/amt/article/25/1/G66/111708/EFFECT-OF-APPLICATION-TIMING-ON-MANAGEMENT-OF
Last checked: 02/23/2017
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Notes: Guide Page |
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| Publication Type:
| Report |
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| Author(s): | Heller, P. R.;
Walker, R.;
Rowan, M. |
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| Author Affiliation: | Department of Entomology, Pennsylvania State University. University Park, PA |
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| Title: | Effect of application timing on management of white grubs with Merit and Mach-2, 1999 |
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| Section: | Reports: Ornamentals
Other records with the "Reports: Ornamentals" Section
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| Source: | Arthropod Management Tests. Vol. 25, 2000, p. 390. |
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| Publishing Information: | Annapolis, MD: Entomological Society of America |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Insecticide evaluation; Application rates; Pest density; Lolium perenne; Popillia japonica; Application timing; Grub control; Imidacloprid; Halofenozide; Insecticides
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| Abstract/Contents: | "This study was undertaken to determine residual control of a JB white grub population on a turfgrass area maintained at Penn State's Landscape Management Research Center at University Park, PA. The turfgrass area consisted [of] primarily perennial ryegrass (100%). Treatment plots were 9 x 6 ft, arranged in a RCB design and replicated three times. Liquid formulations were applied by using a CO₂ sprayer with 4 8002VS TeeJet nozzles mounted on a 6 ft boom, operating at 28 psi, and applied in 817 ml of water/54 ft² or delivering 4.0 gal/1000 ft². At the first treatment time (4 Jun), the following soil and environmental conditions existed: air temp, 57°F, soil temp at 1 inch depth, 58°F; soil temp at 2 inch, 59°F; RH, 77%; amt of thatch, 0.125 inch; soil percent water content (percent by wt), 20.3; water pH, 7.0; application time, early-morning; and clear skies. The experimental area was not irrigated after this treatment. At the second treatment time (23 Jul), the following soil and environmental conditions existed: air temp, 90°F; soil temp at 1 inch depth, 89°F; soil temp at 2 inch, 84°F; RH, 51%; amt of thatch, 0.125 inch; soil percent water content (percent by wt), 24.5; water pH, 7.0; application time, early-afternoon; and clear skies. At the third treatment time (19 Aug), the following soil and environmental conditions existed: air temp, 75°F; soil temp at 1 inch depth, 77°F; soil temp at 2 inch, 75°F; RH, 71%; amt of thatch, 0.125 inch; soil percent water content (percent by wt), 20.8; water pH, 7.0; application time, early-afternoon; and overcast skies. The experimental area was not irrigated after the treatment. General soil conditions were as follows: soil textural class, silt clay loam; soil particle size analysis: sand, 13.2%; silt, 56.4%; clay, 30.4%; organic matter, 4.8%; and soil pH, 7.0. Three white PVC cylinders (8 inch x 6 inch height) were placed in each replicate and 25 JB adults were released inside each cylinder on two separate release dates: 8 Jul (60% females) and 14 Jul (60% females). Adult beetles were maintained inside by covering individual cylinders with white shade screen. The latter procedure allowed for oviposition by adult female beetles. All PVC cylinders were removed on 22 Jul. Post-treatment counts were made on 6 Oct. Three ft² sod samples were taken from each replicate. Each ft² sample was centered on turfgrass located withing the 8 inch PVC cylinder infestation area. the total no. of JB grubs/ft² was recorded. Adult JBs were first observed flying on 20 Jun in Centre County. The stage of grubs sampled at Penn State's Valentine Turfgrass Center 19 Aug included second instar JB. Grub samples recorded on 26 Aug included second instar JB grubs. Eight treatments provided significant reduction of JB on 6 Oct. Severe drought conditions may have influenced white grub density in 1999. No phytotoxicity was noted." |
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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):
Heller, P. R., R. Walker, and M. Rowan. 2000. Effect of application timing on management of white grubs with Merit and Mach-2, 1999. Arthropod Manage. Tests. 25:p. 390. |
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| Web URL(s):
https://academic.oup.com/amt/article/25/1/G66/111708/EFFECT-OF-APPLICATION-TIMING-ON-MANAGEMENT-OF
Last checked: 02/23/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website
Notes: Guide Page |
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MSU catalog number: SB 951 .A1 I48 |
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