Indoor Ornamental Plant Research Articles

Pest Control and Phytotoxicity on Indoor Ornamental Plants with Dichlorvos Fumigation 1

Abstract A 20% dichlorvos impregnated polyvinyl chloride (PVC) resin strip (6.3 × 15.9 × 0.7 cm) per 28.3 m3 interior room significantly reduced the number of mealybugs (Phenacoccus solani Ferris) 48 hour posttreatment. Greenpeach aphid (Myzus persicae Sulzer) and twospotted spider mite (Tegranychus urticae Koch) populations were not suppressed. Exposure of pests to a stake label with an attached dichlorvos impregnated PVC strip produced the same effects as the room fumigation test. Placement of a 20% dichlorvos PVC resin strip per 25.4 × 70 cm polyethylene bag with infested plant material for 12 or 24 hr reduced populations of M. persicae, P. solani and T. urticae, however, 3 exposures at 7-day intervals were more effective in maintaining low populations. Fumigation in bags produced phytotoxic effects with specific plants.