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leaf spot |
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leaf spot n (Life Sciences & Allied Applications / Plant Pathology) any of various plant diseases, usually caused by fungi: characterized by dark lesions on the leaves
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| Though severe cases of corn rust, leaf blight and gray leaf spot can reduce yields by as much as 20%, such losses are rare with today’s crop genetics. The northern catalpa can get leaf spot or powdery mildew, but these conditions are treatable. The impact of gray leaf spot on corn in 1995 and the widespread and intense infestation of soybean aphids last year are a couple of examples. |
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