Evaluation of Agnique MMF in man-made ponds for the control of pestiferous chironomid midges (Diptera: Chironomidae).

TL;DRAbstract

The efficacy of a monomolecular surface film, Agnique MMF (a liquid isostearyl alcohol ethoxylate containing 2 oxyethylene groups [ISA-2OE]) in suppressing emergence of adult Chironomidae from man-made earthen ponds was studied. Three replicated rates, 0.23, 0.47, and 0.94 ml/m2 (or 0.25, 0.5, and 1.0 gal/acre) of Agnique MMF were applied. Pretreatment and periodic posttreatment samples of adult chironomids were collected by employing submerged metal-cone traps as well as floating traps. Concurrently, water pH, dissolved oxygen, specific conductance, and water temperature were measured. Tanytarsini (>82%), Chironomini (16%), and Tanypodinae (1%) midges were collected during the study period. Midge adult collections in floating traps were not significantly reduced by the 0.23-ml/m2 treatment rate, but were significantly reduced (73-93%) for 1-2 wk posttreatment at 0.47 and 0.94 ml/m2 of Agnique MME The lowest rate significantly reduced midge adult emergence for 1 day posttreatment as me

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