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leaf-drop streak

noun
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Definition of leaf-drop streak

: a phase of rugose mosaic developing soon after infection and characterized by necrotic streaks on the stem and underside of the veins of some of the leaves and by falling of the leaves from the lowest upward

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“Leaf-drop streak.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leaf-drop%20streak. Accessed 28 May. 2020.

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