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| Web URL(s): | https://www.plantmanagementnetwork.org/sub/trial/amt31/PDF/G/G11.pdf
Last checked: 11/11/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Thompson, Sarah R. |
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| Author Affiliation: | Department of Entomology, North Carolina State University, Raleigh, North Carolina |
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| Title: | Efficacy of high and low rates of Beauveria bassiana for control of mole cricket nymphs in turf, 2004 |
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| Source: | Arthropod Management Tests. Vol. 31, 2006, p. G11. |
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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: Cynodon dactylon; Beauveria bassiana; Insect control; Application rates; Gryllotalpidae; Scapteriscus vicinus; Scapteriscus borellii; Injuries by insects
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| Abstract/Contents: | "The efficacy of Beauveria bassiana spore applications for control of mole cricket nymphs in turf was investigated in a field trial. The objective of this test was to compare the efficacy of high and low rates of B. bassiana to Talstar Flowable and an untreated check. Plots, 20 d#x 20 ft, were established on the Bermuda grass driving range at Sandpiper Bay Golf Course in Brunswick Co., NC. This area has a history of mole cricket infestations and signs of damage present at the time of application. The test was a RCB design with four replicates of each treatment. All insecticide applications were made on 26 Aug using a CO2-powered backpack sprayer calibrated to deliver 30 gpa. B. bassiana treatments included the rates of 2 ^D#x 1013 spores/acre and 5 ^D#x 1012 spores/acre. Talstar was applied at the label rate of 10 oz/1000 ft2. The golf course irrigation system provided approximately 0.50 inch of water to the test site immediately following treatment applications. At the time of application, soil temperature at four inches depth was 82°F and air temperature was 86°F. Soil at the test site was classified as Leon fine sand with a pH of 4.5 and 1.67% humic matter. Soapy water flush sampling at the test site indicates that the driving range population was 84% tawny mole crickets and 16% southern mole crickets. Plots were evaluated for fresh mole cricket surface damage on 31 Aug, 9, 16, and 23 Sep using the damage grid evaluation method of Cobb and Mack (1989). A one square meter grid divided into nine subsections was randomly placed in each plot and a damage rating was assigned based on the occurrence of surface damage in each of the nine subsections (with 0 = no damage and 9 = severe damage). Five ratings were made for each plot on each of the evaluation dates. The actual damage means for the five ratings are reported in the Table. All data were transformed √ (x + 0.5) prior to ANOVA and means separation by LSD test (P ≤ 0.05). Mole cricket infestation levels at this site were very high prior to treatment applications. There were no differences between any of the pre-treatment damage rating means. On 31 Aug, there were no significant differences between any of the treatments and the untreated check. There were also no differences between any of the treatments and the untreated check on the other evaluation dates of 9, 16, and 23 Sep; however, the high rate of B. bassiana had numerically lower damage rating means compared to the low rate on three of the evaluation dates. Both rates of B. bassiana provided the same level of control as the turfgrass insecticide Talstar, but none of the treatments lowered mole cricket activity to an acceptable level. Mole cricket nymphs are typically large and very active during the time of the year when this test was conducted, and earlier applications of any of these products may be more appropriate to achieve satisfactory levels of control." |
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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):
Thompson, S. R. 2006. Efficacy of high and low rates of Beauveria bassiana for control of mole cricket nymphs in turf, 2004. Arthropod Manage. Tests. 31:p. G11. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/sub/trial/amt31/PDF/G/G11.pdf
Last checked: 11/11/2016
Requires: PDF Reader |
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MSU catalog number: SB 951 .A1 I48 |
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