Use of Dichlorvos in a Portable Automatic Sprayer Mineral Station to Control Face Flies ( Diptera : Muscidae ) and Pyrethroid - Resistant Horn Flies ( Diptera : Muscidae ) on Beef Cattle '
نویسنده
چکیده
J. Agric. Entomol. 9(4);273-281 (October 1992) ABSTRACT A portable automatic sprayer, actuated when cattle obtain mineral, was tested against face fiies and pyrethroid·resistanL horn nics using 0.5% Al dichlorvos in a waler spray mixture. Horn ny populations were initially 48-fold resistant to pCt-methrin with no '"esistancc to diazinon. Horn Oy control averaged 90.3 to 99.1% reduction. Resistance to permcthrin decreased from 48-fold La 33-fold over 2 yr with no change in diazinon resistance. Face Oy control averaged from 56.4 to 76.8% reduction. The cost for this system of Oy control was approximately 33% the cost of effective insecticide car lags (two/head).
منابع مشابه
Economic effects of horn fly (Diptera: Muscidae) populations on beef cattle exposed to three pesticide treatment regimes.
Horn flies could not be maintained below 50 per animal with sprays or dusts during a 21-wk study. However, weights of cows and calves and condition scores of cows were not influenced by suppression of Haematobia irritans (L.) populations. Results show that cattle in northwest Florida can tolerate average populations of greater than or equal to 200 flies for 70 d with no adverse economic effects...
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