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| Web URL(s): | https://www.plantmanagementnetwork.org/sub/trial/amt31/PDF/G/G1.pdf
Last checked: 11/11/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Heller, Paul 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: | Black cutworm larval residual efficacy study with conserve, DPXE2Y45, provaunt, and talstar, 2005 |
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| Source: | Arthropod Management Tests. Vol. 31, 2006, p. G1. |
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| Publishing Information: | Annapolis, MD: Entomological Society of America |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Agrotis ipsilon; Larva; Isouron; Bifenthrin; Application rates; Precipitation; Insecticide trials; Indoxacarb
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| Abstract/Contents: | "This experiment was completed on a bentgrass sand green without aerification maintained at Penn State's Valentine Turfgrass Research Center at University Park to determine the effectiveness of treatments against third instar black cutworm (BCW) larvae. Treatment plots were 6 ^D#x 6 ft, arranged in a RCB design and replicated four times. A one ft barrier was established between each replicate and block. 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 272 ml of water/36 ft2 or delivering 2.0 gal/1000 ft2. Ambient conditions in the early morning of 26 May (treatment time one) were partly sunny, air temp of 70°F, soil temp at 2 inch depth = 55°F, and RH = 52.6%. Applications were made in the early morning under partly sunny skies to moist thatch and soil using water with a pH of 7.0. Turf and soil conditions on the same date were moist with a 0.125 inch of thatch. Soil textural class on site is loamy sand with 77.1% sand, 17.0% silt, 5.9% clay. Soil percent water content (percent by wt) was 15.4%, organic matter = 1.7%, CEC = 9.1, and soil pH of 7.1. The experimental area was not irrigated after treatment. Applications were made in the early morning under cloudy skies on 5 Jul (treatment time two) to moist soil and thatch. Water pH and amt. of thatch were the same as before. Air temp at the time of application was 79°F, soil temp at 2 inch depth = 68°F, and RH = 77%. Soil sampled at this time was 81.6% sand, 13.5% silt, and 4.9% clay, with percent water content (percent by wt) of 10% and pH of 6.9. Soil organic matter was 1.5% with a CEC of 10.4. The experimental area was not irrigated after treatment but the area did received a light sprinkle (trace amt.) before all treatments were completed on 5 Jul. Plus, 0.31 inch of rain was recorded on the evening of 5 Jul, 0.44 inch on 7 Jul, and 0.75 inch of rain on 8 Jul. Thus 1.46 inches of rain was recorded with 72 hr of the initial treatment which is excessive. Eight inch diameter by six inch long white PVC cylinders were placed in each replicate and secured in place. None of the experimental area was aerified two weeks prior to the second treatment since an early treatment had been applied in May. The area could not be disturbed. Each cylinder was covered with white meshed shade cloth. One cylinder was placed in each replicate and 10 third instar black cutworm larvae were added to each cylinder on three introduction dates, respectively 8 Jul (3 DAT), 12 Jul (7 DAT), and 19 Jul (14 DAT). Efficacy data was recorded on 11 Jul, 15 Jul, and 22 Jul by counting the number of cutworm larvae flushed to the surface within one eight inch PVC cylinder per replicate by using a soap irritant drench. Data was analyzed by using Waller-Duncan k ratio (WD; P ≤0.05) and an Abbott's transformation. DPXE2Y45 1.67SC applications completed on 5 Jul provided significant suppression of black cutworm across all three infestation dates. Talstar F provided significant control across all three infestation dates but was not as consistent when compared to DPXE2Y45. Provaunt did not provide consistent control which might be attributed to the volume of rainfall that occurred within the first three days of the experiment. Conserve SC did not provide significant reduction of BCW. Excessive rainfall may have negatively impacted the residual activity of treatments. 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. Black cutworm larval residual efficacy study with conserve, DPXE2Y45, provaunt, and talstar, 2005. Arthropod Manage. Tests. 31:p. G1. |
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| Web URL(s):
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Last checked: 11/11/2016
Requires: PDF Reader |
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MSU catalog number: SB 951 .A1 I48 |
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