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gray blight

noun
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Definition of gray blight

: a very common disease of the tea plant especially in India and Sri Lanka that is caused by a fungus (Pestalozzia theae) which produces black dots on the leaves

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“Gray blight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gray%20blight. Accessed 25 Jan. 2021.

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