Examples of whitefly

whitefly isn’t in the Cambridge Dictionary yet. You can help!
At the moment we are doing some work on whitefly which communicate by singing.
Each sample was given a unique code number and the host plant, host whitefly species, date, location and collector were noted.
As long as whitefly catches are below this threshold, growers do not need to apply chemical controls.
Several earlier studies had observed that this physiological change was induced only through the feeding of juvenile whiteflies.
No significant effects were observed for density of whiteflies and type of culture (single or mixed).
The initial numbers of whiteflies and the type of culture (single or mixed) had no significant effect on progeny size.
The interaction between biotype and initial numbers of whiteflies was also not significant.
Each counting area was 1 cm2 and all whitefly eggs and pupae within the area were counted.
This will lead to the expedient selection of relevant natural enemies for a specific whitefly target, allowing for 'customized control' for the first time.
These sorts of delays might be particularly important in terms of whitefly management for the following reasons.
As the whiteflies recovered from anaesthesia, the leaf punches were inverted so that the whiteflies orientated normally.
Recently, an increasing problem has been the sudden economic impact caused by previously little-known whitefly species becoming established in new geographical areas.
We postulate that whiteflies surviving treatment continue to feed normally.
Some laboratory tests revealed an unexpectedly high proportion of whitefly penetration, accompanied by a great variability among the samples of the same screen.
In the geographical area covered by this study, whiteflies are primarily pests of vegetable crops (especially in greenhouses), citrus and ornamental plants.
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.
Within the mixed cages more whiteflies moved to new leaves on cucumber and bean compared to tomato plants.
Males were discarded and the females placed onto whitefly-free hibiscus plants and caged securely to exclude contamination.
Adult whiteflies are very small insects, most measuring 1-3 mm in body length.

随便看

反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。