单词	leaf spot
释义	leaf spot noun : any of various plant diseases characterized by discolored often circular spots on the leaves Example Sentences Recent Examples on the Web To help control leaf spot make sure the soil is enriched with organic material. oregonlive, 9 Apr. 2022 Second, the smaller, brownish spots are probably caused by a leaf spot fungus. oregonlive, 8 May 2022 There are many leaf spot diseases that affect aspen. oregonlive, 28 May 2022 Fertilizer applied three to four times a year can help keep your ligustrum healthy but the tree form may still get cercospora leaf spot. Tom Maccubbin, Orlando Sentinel, 28 May 2022 Here is a link to a Pacific NW Plant Disease Handbook section on septoria leaf spot. oregonlive, 14 May 2022 Being continually wet contributes to the development of leaf spot. oregonlive, 9 Apr. 2022 Red thread is one of four very common wet weather fungal diseases, the others being Microdochium patch and two leaf spot diseases (brown blight and melting out). oregonlive, 29 Jan. 2022 If brown patch spots, gray leaf spot lesions or fading out from take-all patch are showing up, applying whole ground cornmeal at 20 pounds per 1,000 square feet would be in order. Howard Garrett, Dallas News, 4 Oct. 2021 See More Word History First Known Use circa 1846, in the meaning defined above
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