Ground Application of Ultra-Low-Volume Malathion and Fenthion for Horn Fly¹ Control in New Mexico²

Author: KINZER, H. G.

Source: Journal of Economic Entomology, Volume 63, Number 3, June 1970 , pp. 736-739(4)

Publisher: Entomological Society of America

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Abstract:

Ground applications of ultra-low-volume (ULV) formulations of malathion and fenthion applied at 7-day intervals to unrestrained range cattle were evaluated for control of Haematobia irritans (L.). Insecticides were applied on the upwind side of herds with a ULV applicator transported on a pick-up truck. The air blast generated by the applicator plus the natural wind currents carried the insecticides onto the herds.

Horn fly populations were reduced an average of 94, 83, and 59% at 1 hour, 2 days, and 7 days, respectively, following ULV malathion treatments applied at an average calibrated truck speed of 2.75 mph, and with an "0" nozzle dispensing 22.5 oz/min of insecticide. With the same speed and an "00" nozzle dispensing 11.3 oz/min, population reduction were 91, 90, and 51% at the same time intervals.

Control with ULV fenthion (3.3 oz/min at 2.0 mph) was slightly better than with malathion treatments. Population reductions at 7 days after treatment averaged 70% and gave slightly better population suppression over a 30-day period than did a single application of 0.25% top-line spray of coumaphos.

Document Type: Research article

Publication date: 1970-06-01

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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