Search results
Results From The WOW.Com Content Network
Greenhouse whitefly nymph. Adult. Females are capable of mating less than 24 hours after emergence and most frequently lay their eggs on the undersides of leaves. Eggs are pale yellow in colour, before turning grey prior to hatching. Newly hatched nymphs, often known as crawlers, are the only mobile immature life-stage. During the first and ...
The parasitoid is sold commercially for biological control of whitefly, an insect pest of tomato and other greenhouse crops. Encarsia formosa has been used as a natural pesticide to control whitefly populations in greenhouses since the 1920s. Use of the insect fell out of fashion due to the increased prevalence of chemical pesticides and was ...
Trialeurodes vaporariorum (Westwood, 1856) – greenhouse whitefly; Trialeurodes varia Quaintance & Baker, 1937; Trialeurodes variabilis (Quaintance, 1900) – papaya whitefly; Trialeurodes vitrinellus Cockerell, 1903; Trialeurodes vittatus (Quaintance, 1900) – grape whitefly
Trialeurodes vaporariorum, greenhouse whitefly, a major pest of greenhouse fruit, vegetables, and ornamentals Although several species of whitefly may cause some crop losses simply by sucking sap when they are very numerous, the major harm they do is indirect.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
Many parasitoid wasps are considered beneficial to humans because they naturally control agricultural pests. Some are applied commercially in biological pest control, starting in the 1920s with Encarsia formosa to control whitefly in greenhouses. Historically, parasitoidism in wasps influenced the thinking of Charles Darwin. [3]
The classical biological control is by the use of parasitoid wasps such as Encarsia formosa , but aggressive strains of whitefly have emerged and results are unpredictable. Another approach is with the use of entomopathogenic fungi such as Aschersonia aleyrodis and this has met with some success, the main target insect being greenhouse whitefly ...