| 单词 | whitefly |
| 释义 | BETA Examples ofwhiteflyDictionary> Examples ofwhitefly whiteflyisn’t in the Cambridge Dictionary yet. You can help! Add a definition At the moment we are doing some work onwhiteflywhich communicate by singing. From theCambridge English Corpus Each sample was given a unique code number and the host plant, hostwhiteflyspecies, date, location and collector were noted. From theCambridge English Corpus As long aswhiteflycatches are below this threshold, growers do not need to apply chemical controls. From theCambridge English Corpus Several earlier studies had observed that this physiological change was induced only through the feeding of juvenile whiteflies. From theCambridge English Corpus No significant effects were observed for density of whiteflies and type of culture (single or mixed). From theCambridge English Corpus The initial numbers of whiteflies and the type of culture (single or mixed) had no significant effect on progeny size. From theCambridge English Corpus The interaction between biotype and initial numbers of whiteflies was also not significant. From theCambridge English Corpus Each counting area was 1 cm2 and allwhiteflyeggs and pupae within the area were counted. From theCambridge English Corpus This will lead to the expedient selection of relevant natural enemies for a specificwhiteflytarget, allowing for 'customized control' for the first time. From theCambridge English Corpus These sorts of delays might be particularly important in terms ofwhiteflymanagement for the following reasons. From theCambridge English Corpus As the whiteflies recovered from anaesthesia, the leaf punches were inverted so that the whiteflies orientated normally. From theCambridge English Corpus Recently, an increasing problem has been the sudden economic impact caused by previously little-knownwhiteflyspecies becoming established in new geographical areas. From theCambridge English Corpus We postulate that whiteflies surviving treatment continue to feed normally. From theCambridge English Corpus Some laboratory tests revealed an unexpectedly high proportion ofwhiteflypenetration, accompanied by a great variability among the samples of the same screen. From theCambridge English Corpus In the geographical area covered by this study, whiteflies are primarily pests of vegetable crops (especially in greenhouses), citrus and ornamental plants. From theCambridge English Corpus The great majority of whiteflies in existence today colonize only dicotyledonous angiosperms and a smaller, but significant, number feed on monocots, particularly grasses and palms. From theCambridge English Corpus Within the mixed cages more whiteflies moved to new leaves on cucumber and bean compared to tomato plants. From theCambridge English Corpus Males were discarded and the females placed ontowhitefly-free hibiscus plants and caged securely to exclude contamination. From theCambridge English Corpus Adult whiteflies are very small insects, most measuring 1-3 mm in body length. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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