WHITEFLY CONTROL
ABOUT WHITEFLIES:
Whiteflies are small, flying insects that belong to the family Aleyrodidae. They are typically around 1-3 millimeters long and have a white or yellowish color, which gives them their name. These pests are considered significant agricultural and horticultural pests due to their ability to reproduce rapidly and feed on a wide range of plants. Whiteflies can be found on the undersides of leaves, where they cluster in large numbers.
There are three whitefly species of particular concern to growers (although there are more than three species of whitefly which can be considered problematic): the greenhouse whitefly, the silverleaf whitefly, and the sweet potato whitefly. You can determine the differences in the pupae of the whitefly. The pupae of the greenhouse whitefly are raised with sides perpendicular to the leaf's surface and fringed with hair-like growths. The silverleaf and sweet potato whitefly pupae are dome shaped and lack most of the hairs.
Whiteflies are considered pests because they feed on plant sap by piercing the plant tissues with their mouthparts. As they feed, they excrete honeydew, a sticky substance that serves as a medium for the growth of black sooty mold. This honeydew and sooty mold can cover the leaves, affecting photosynthesis and reducing the overall vigor of the plants. Additionally, whiteflies can transmit plant viruses, further compromising the health and productivity of the plants. Heavy infestations can lead to stunted growth, leaf yellowing, and even plant death. Symptoms of Whitefly infestation includes yellowing leaves, wilting and stunted growth, sooty mold, leaf curling, and reduced yield.
Integrated pest management (IPM) approaches, such as introducing natural predators or parasites, using traps & lures, applying natural protectants & treatments, and practicing good plant hygiene, can help manage pest insect populations effectively. Regular monitoring and early detection are crucial in preventing severe infestations and minimizing the damage caused by these persistent pests.
NATURAL PREDATORS:
Delphastus catalinae
Encarsia formosa
Eretmocerus eremicus
Lacewing Larvae
Ladybugs
