Silverleaf Whitefly


Silverleaf Whitefly

Bemisia tabaci


In a Nutshell

    Silver-whiteflies sit on the underside of the leaves and scatter upon shaking the plantChlorotic spots appear on the leaf bladesThese spots later coalesce and the leaf eventually turns yellow, apart from the area around the veinsThe leaves may later curl or take a cupping shape

Hosts: %1$s

· Bean · Eggplant · Cucumber · Tomato · Lettuce · Potato · Gram · Cotton · Soybean · Additional · Melon


The larvae and the adults consume the plant’s sap and cause chlorotic spots to appear on the leaf blade. These spots are later disfigured by honeydew and the sooty moulds that grow there. In heavy infections, the spots may coalesce and engulf the whole leaf, which eventually turns yellow, apart from the area around the veins. The leaves may later become deformed, curl or take a cupping shape. Silverleaf whiteflies transmit viruses such as tomato yellow leaf curl virus or cassava brown streak virus.


Silverleaf whiteflies measure about 0.8 mm and have the body and both pairs of wings covered with a white to yellowish powdery, waxy secretion. They are often found on the underside of the leaves, where females lay their eggs. Tiny, yellow to white larval scales later appear there and are visible to the naked eye. In severe infestations, numerous small and white adult whiteflies will emerge in a cloud when the plant is shaken. Between plantings, adults survive on alternative hosts plants.

Biological Control

Employ natural insecticides based on sugar-apple oil (Annona squamosa) for effective population control. Also introduce or stimulate natural antagonists such as the parasitoid wasp Eretmocerus eremicus, predatory mites or nematodes. Pathogenic fungi have also been used to control/eradicate the pest. A new group of environmentally-friendly insecticides with surfactant-like properties kill the pest by overcoming the protective waxes on larvae and adults.

Chemical Control

Always consider an integrated approach with preventive measures together with biological treatments if available. Silverleaf whiteflies quickly develops resistance to all pesticides, so a rotation of different products is recommendable. If no alternative treatment is available, apply combinations of pesticides based on bifenthrin, buprofezin, fenpropathrin, amitraz, fenoxycarb, deltamethrin, azadirachtin, pymetrozine to control the insect.

Preventive Measures

    Perform intercropping practices with non-hostsCheck plants regularly for whiteflies, especially the young shotsRemove leaves with eggs or larvae on them


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