Evaluation of equipment modifications and dosage rates of ground ULV applications of naled against Aedes taeniorhynchus in a Florida citrus grove
Curtis, G.A.; Mason, J.
Journal of the American Mosquito Control Association 4(3): 345-350
1988
ISSN/ISBN: 8756-971X PMID: 3251479 Document Number: 319806
Efficiency of ground-applied Dibrom 14 (naled), based on caged mosquito bioassays in a moderately vegetated coastal southeastern Florida citrus grove, proved to be significantly associated with downwind distance. However, association analysis between wind speed, temperature or relative humidity revealed no correlation between these meteorological factors and mosquito mortality. Tests conducted with 3 of the commonly used ULV machines (LECO, London Aire and Curtis-Dyna) demonstrated no significant differences in efficiency. Equipment modifications (adaptation of London Aire to a Buffalo Turbine, and adding extension tubes to the Curtis-Dyna) to simulate aerial application by elevating the spray release point proved ineffective. Increasing the dosage of naled to 3 times the labelled rate for the ground treatment (i.e. from 3.6 fluid oz/min to 10.8 fluid oz/min) resulted in >95% mortality.