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| Web URL(s): | https://www.plantmanagementnetwork.org/sub/trial/amt31/PDF/G/G36.pdf
Last checked: 11/11/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Heller, P. R.;
Kline, D.;
Ellis, P. J. |
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| Author Affiliation: | Department of Entomology, Pennsylvania State University, University Park, Pennsylvania |
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| Title: | Application of DPXE2Y45 and Merit to preventively suppress white grubs based at two timing intervals, 2005 |
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| Source: | Arthropod Management Tests. Vol. 31, 2006, p. G36. |
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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: Poa pratensis; Lolium perenne; Imidacloprid; White grubs; Application timing; Popillia japonica; Cyclocephala borealis; Application rates
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| Abstract/Contents: | "This study was undertaken to determine product effectiveness when applied in Apr and May to control a predominant Northern masked chafer (NMC) and Japanese beetle (JB) white grub population on a golf course rough in Centre County, PA. The turfgrass area consisted of perennial ryegrass (20%) and Kentucky bluegrass (80%). Treatment plots were 6 ^D#x 9 ft, arranged in a RCB and replicated three times with a 1 ft barrier around all replicates. Liquid formulations were applied by using a CO2 sprayer with four 8002VS TeeJet nozzles mounted on a 6 ft boom, operating at 28 psi, and applied in 816 ml of water/54 ft2 or delivering 4.0 gal/1000 ft2. Conditions during mid morning on 6 Apr (treatment time one) were sunny with air temp = 65°F and RH = 47.7%. At that time, soil was moist with a temp at 1 and 2 inch depth of 48 and 44°F, respectively. Thatch, 0.25 inch thick, was moist and water pH was 7.0. General soil conditions were: soil textural class, silt loam; soil particle size analysis: sand, 36.5%; silt, 51.7%; clay, 11.8%; soil percent water content (percent by wt), 27.8; organic matter, 4.9%; CEC, 9.2; and soil pH, 5.4. Each replicate was irrigated post treatment with a hand held watering can with 4 gal water which is equivalent to 0.125 inch post treatment irrigation. The fairway irrigation had not yet been turned on this early in the season. Total rainfall recorded between 6 Apr through 7 Apr was 0.1 inch. Conditions during early morning on 5 May (treatment time two) were sunny with air temp = 51°F and RH = 48.2%. At that time, soil was dry with a temp at 1 and 2 inch depth of 42 and 40°F, respectively. Thatch, 0.25 inch thick, was moist and water pH = 7.0. General soil conditions were as follows: soil textural class, loam; soil particle size analysis: sand, 41.2%; silt, 47.6%; clay, 11.2%; soil percent water content (percent by wt), 17.9; organic matter, 4.1%; CEC, 9.1; and soil pH, 5.6. The experimental area was irrigated post treatment with 0.3 inch of water. Throughout the summer and early fall the area was placed on a regular fairway irrigation schedule. Three one ft2 soil samples were removed from each replicate on 21 Sep and the total number of NMC and JB grubs was recorded. Data was analyzed using Waller-Duncan k ratio (WD; P ≤ 0.05). The area selected for the experiment had been infested with a natural population of NMC and JB during the spring of 2005. Adult NMC flight was monitored in 2005 in Centre County with a black light trap maintained at the Valentine Turfgrass Research Center. The first adult NMC was collected on 24 Jun. Adult NMC flight peaked between 2 and 8 Jul, and the last NMC adult was collected on 28 Jul. JB adults were observed flying late this season. Second instars, as well as, third instar grubs were present on 21 Sep. Drought conditions delayed development of scarab grubs in 2005. All treatments provided significant suppression of JB, while 10 treatments provided significant reduction of NMC with exception to DPXE2Y45 1.67SC applied at 0.05 lb (AI)/acre applied on 5 May. All treatments significantly reduced combined JB and NMC grub populations. 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., D. Kline, and P. J. Ellis. 2006. Application of DPXE2Y45 and Merit to preventively suppress white grubs based at two timing intervals, 2005. Arthropod Manage. Tests. 31:p. G36. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/sub/trial/amt31/PDF/G/G36.pdf
Last checked: 11/11/2016
Requires: PDF Reader |
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MSU catalog number: SB 951 .A1 I48 |
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