Encapsulated Rabon for Larval House Fly1 Control in Cow Manure2,3

Authors: MILLER, R. W.; GORDON, C. H.

Source: Journal of Economic Entomology, Volume 65, Number 2, April 1972 , pp. 455-458(4)

Publisher: Entomological Society of America

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.A series of 5 trials was conducted to determine the feasibility of encapsulating RabonĀ® (2-chloro-I- (2,4,5-trichlorophenyl) vinyl dim ethyl phosphate) and feeding it to lactating dairy cows for control of Alusca domestica L. larvae in the feces. In the 1st trial, an insecticidal balance experiment, 15% of the encapsulated Ra bon reached the feces as compared with 0.3% that was found earlier with a 75% WP formulation. No (‘0.005) Ra bon appeared in the milk from this cow. The next 2 trials confirmed the feasibility of encapsulating Ra bon for feed-additive use and they determined that the most effective formulation available was AC-360 which contained 59% active Ra bon, When 30 ppm Ra bon as AC-360 was fed to dairy cows, 100% of organophosphate-resistant house fly larvae seeded onto the feces were killed. In a field trial, manure from cows fed 66 ppm Ra bon (AC-360) or 66 ppm Ra bon in a new (WT-80) encapsulated formulation caused a 94% reduction in fly larvae when compared with manure from control cows. In the final trial, 2 cows were fed 60 ppm Ra bon as AC-360 for a 4- or 6-month period. The average concentration of Ra bon in the feces of these cows was 2.24 ppm. Residues of Ra bon in milk ranged between ‘0.005 and 0.013 ppm. No adverse effects on feed intake, milk production, or general health of these animals were observed.

Document Type: Research Article

Publication date: April 1, 1972

More about this publication?
  • 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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