Imported Fire Ant Toxic Bait Studies: Further Tests with Granulated Mirex-Soybean Oil Bait1
Additional tests with granulated mirex-soybean oil bait for control of the imported fire ant, Solenopsis saevissima made to a 960-acre plot containing land of variable tel rain and ground cover. Eight months later I colony of ants was found on 1 of thirty-three 1/2- to 1 1/2-acre observation plots. The total pretreatment count of ant colonies on these plots was 750, or an average of 23 per plot. Applications of bail made during the cooler part of the year (November-April) to open land in sunny weather gave good control (96-100%).However, fast and complete kills of ants was dependent upon warm weather. The bait in the previous tests contained 0.075% mirex, 14.925% soybean oil, and 85% corncob grits, and was applied at the rate of 12\;2 Ib/acre. Bait containing 0.075, 0.15, or 0.3% mirex and applied at the rates of 3, 5, or 10 Ib/acre all gave excellent control of ants. In general, observations have shown that areas treated with bait in the first half of the year become reinfested the next fall, while areas treated during the last half of the year will not become reinfested until the fall of the next year. In either case, the actual reinfestation appears to coincide with the period of greatest mating flight activity (May- plete kills of ants was dependent upon warm weather. June).
Document Type: Research Article
Publication date: October 1, 1964
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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