词条 | whitefly |
释义 | whitefly insect ![]() The citrus whitefly (Dialeurodes citri) is economically important, sucking sap from orange and date trees and producing honeydew, a sweet by-product of digestion, upon which a sooty fungus grows that ruins the fruit. Control is by oil or parathion sprays. The citrus blackfly (Aleurocanthus woglumi) is well-established in Mexico and the West Indies. A sooty fungus that grows on the honeydew excreted by the citrus blackfly reduces the host plant's ability to photosynthesize. The greenhouse whitefly (Trialeurodes vaporariorum) is one of the most abundant and destructive members of the family. It damages plants by reducing vigour and causing them to wilt, turn yellow, and die. Sprays that kill both adult and larval stages are necessary to control this pest. |
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