Curative Control

Plants in pest control

Physical methods

1. Yellow plastic gallon containers mounted upside down on sticks coated with transparent automobile grease or used motor oil. These should be placed in and around the field at about 10 cm above the foliage. Clean and re-oil when traps are covered with flies (Braun; Shepard, 1997: pp. 5-6).
2. Yellow sticky boards
   To use, place 1 to 4 yellow sticky cards per 300 square meter field area. Replace traps at least once a week. It is difficult to determine the population of newly trapped whiteflies on a sticky card from those previously trapped ones (Parker; Talenar; Skinner, 1995).
   To make your own sticky trap, spread petroleum jelly or used motor oil on yellow painted plywood, 6 cm x 15 cm in size or up. Place traps near the plants but faraway enough to prevent the leaves from sticking to the board (Ellis; Bradley, 1996: pp. 465-466). Traps when hung should be positioned 60-70 cm zone above the plants.
3. Yellow plastic trapping sheets. A 2 m long x 75 cm wide yellow plastic sheet coated with motor oil, both ends attached to bamboo or wooden poles and carried by 2 persons through the field to mass capture adult flies (CABI, 2003).
4. Plastic trays placed under the plants to monitor and catch pupating larvae as they leave the plants to pupate in the soil (Braun; Shepard, 1997: p. 6).
5. An inverted kitchen funnel capped with a plastic vial to monitor adults' emergence from the seedbeds (Olkowski; Daar; Olkowski, 1991: p.390).
6. Yellow plastic drinking cups coated with adhesives and stapled on stakes above plant canopies to trap flies (University of Florida, 2003).