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词汇 leaf roll
释义

Definition of leaf roll in English:

leaf roll

noun
mass noun
  • A virus disease of potatoes marked by upward curling of the leaves.

    马铃薯卷叶病

    Example sentencesExamples
    • The biggest concern in the Pacific Northwest is the green peach aphid, because the aphid transmits leaf roll and other viruses.
    • It claims that their insect-resistant potato requires 40 percent less insecticide (for the Colorado potato beetle and aphids that transmit leaf roll virus disease) than other varieties.
    • Just last year, or early this year, there were some major viral outbreaks of potato leaf roll virus in Australia.
    • Perhaps more insidiously, insects such as fruit fly can carry spores associated with bunch rots, and mealy bug can transmit leaf roll virus.
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