Full TGIF Record # 64402
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Web URL(s):https://academic.oup.com/amt/article/24/1/G56/205541/CONTROL-OF-THE-RED-IMPORTED-FIRE-ANT-WITH-BAIT
    Last checked: 02/17/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide Page
Publication Type:
i
Report
Author(s):Hertl, P. T.; Brandenburg, R. L.; Xia, Y.
Author Affiliation:Department of Entomology, North Carolina State University, Raleigh, NC
Title:Control of the red imported fire ant with bait formulations applied as surface mound treatments, North Carolina, 1998
Section:Ornamentals
Other records with the "Ornamentals" Section
Source:Arthropod Management Tests. Vol. 24, 1999, p. 365-366.
Publishing Information:Annapolis, MD: Entomological Society of America
# of Pages:2
Keywords:TIC Keywords: Pest control; Insect control; Ant control; Insecticides; Insecticide evaluation; Application rates; Pest density; Formulations; Comparisons; Solenopsis invicta; Baits; Eremochloa ophiuroides; Paspalum notatum; Blends; Amidinohydrazone
Abstract/Contents:"Three experimental spinosad-based insecticide bait treatment (NAF-422, NAF-433, NAF-434) and two commercially avaliable baits (Amdro and Award) were tested to determine their efficacy as mound treatments for the control of the RIFA. The test was performed along Interstate 40 in Sampson Co., NC in an area planted with a Centipede/Bahiagrass mix. Sixty mounds, separated by a distance of at least 10 m, were individually selected and treatments were randomly assigned (CRD) to the mounds. All baits were applied by hand using a level tablespoon measure to apply the appropriate amount of each product to the top of the mound, and to an area approximately 2 ft around the mound to simulate the way these products are used by the average homeowner. The granular baits were applied on the morning of 7 Oct. Conditions on this date were clear and sunny with a mild breeze. Air temperature was 82°F and soil temperature (4-inch) was 78°F. The ants were actively foraging and were seen taking the bait as it was applied. The site remained undisturbed for the duration of the test. Control was evaluated using the following methods. Each mound was individually examined at all sampling dates to determine if live ants were present or absent. The top of each mound was uniformly disturbed using a probe and mounds with any living ants were classified as having 0% control, or as having 100% control if all ants were dead. Additionally, a morbidity raitng was done using a 0 to 10 scale. A mound was rated as having 0 morbidity if the activity and number of ants appearing in the disturbed area was comparable to those observed in untreated mounds examined outside of the test area just prior to evaluation on each date. Mounds with no living ants were rated as 10 if all ants were dead. Observations were also made to determine if the ants were moving or forming another mound. A colony was considered as moving if another mound was formed within 3 ft of the original mound, especially if there were trails or other evidence to suggest that the mounds were linked. Mounds were rated for colony size on three dates. Colony size was rated on a 0 to 4 scale depending on the size of the mound and the number of ants observed (0 = all ants dead, 1 = 1-99 ants, 2 = 100-999 ants, 3 = 1000-50,000, 4 = more than 50,000 ants present). Evaluations were made on 10, 14, 21 Oct, and 7, 18 Nov (3, 7, 14, 31, and 42 DAT, respectively). The actual mean values for colony size, percent control, morbidity, and percent colony movement on each evaluation date are reported in the Table. All were transformed for √(X + 0.5) for substantial analysis (ANOVA and Tukey's Studentized Range Test). Evaluation of colony size 3 DAT showed no differences among treatments. Significant differences in morbidity ratings were noted with all spinosad treatments (NAF-422, NAF-433, NAF-434), the Amdro treatment having higher morbidity ratings than the Award-treated mounds or the untreated check. Additionally, both the NAF-422 and NAF-433 treatments had significantly higher morbidity ratings than the Amdro treatment, while the morbidity observed in the NAF-434 treatment was not found to be different from that observed in either the NAF-422, NAF-433, or AmdroR treatment. 7 DAT, the average morbidity ratings of all the bait treatments were significantly higher than those observed in the untreated check. However, average morbidity ratings in all the spinosad treatments and the Amdro treatment were significantly higher than those observed in the AwardR treatment. Significant differences were noted in ratings of colony size 14 DAT. Colony size in the spinosad treatments were found to be smaller than in the Award treatment or the untreated control, but were not found to be different than those observed in the Amdro treatment. The average colony size rating for the Amdro-treated mounds was not found to be significantly different from those made in either the spinosad treatments or the Award bait treatment. All the bait treatments on this date had significantly higher average morbidity ratings than those observed in the untreated check. Morbidity ratings of the spinosad mound treatments were not found to be different from those observed in the Amdro bait treatment. No significant differences in morbidity ratings were noted between the Amdro and Award bait treatments this date. It should be noted that, 14 DAT, one mound in the Award treatment that was previously noted as having 100% control was found to be active. This may represent a secondary infestation, but was included in this and subsequent evaluations. Morbidity ratings 31 DAT showed results similar to those observed 14 DAT. Colony size and morbidity ratings 42 DAT gave identical results, both reflecting significantly better control in the spinosad treatment than in either the Award bait treatment or the untreated check. However, no significant differences in control were observed between any of the spinosad treatments and the Amdro bait treatment. Control in the Award® bait treatment was not found to be different from that observed in either the Amdro treatment or the untreated control. No phytotoxicity was observed."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hertl, P. T., R. L. Brandenburg, and Y. Xia. 1999. Control of the red imported fire ant with bait formulations applied as surface mound treatments, North Carolina, 1998. Arthropod Manage. Tests. 24:p. 365-366.
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https://academic.oup.com/amt/article/24/1/G56/205541/CONTROL-OF-THE-RED-IMPORTED-FIRE-ANT-WITH-BAIT
    Last checked: 02/17/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide Page
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