Field tests of formulated permethrin (Permanone 30:30) and malathion applied by ground ultra-low volume equipment were conducted using caged, laboratory-reared, adult Ochlerotatus taeniorhynchus. Cages were placed in an open field and also in semi-dense scrub pine. Two doses, a high and a medium dose of each compound, were applied as suggested by the label. Regardless of application rate, neither chemical provided satisfactory control under the canopy. The average mortality count at the open site and vegetated site was 86.6% and 49.1%, respectively (F.pr. < 0.001, SED 3.87). Malathion for both open and canopied areas achieved significantly greater mortality compared to permethrin.
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