How to identify Brown Spot on Ramie
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Ramie brown spot can damage leaves and stems, affecting yield and hemp fiber quality. The leaves suffered damage, with early brownish green spots, followed by enlargement of round or amorphous lesions, brownish, with an inconspicuous concentric ring pattern in the middle of taupe and darker edges. Diseases, health organizations, clear boundaries, sometimes pale yellow halo. The lesions on the back of the leaves are yellow-brown and brown with dark veins and depressions. The diseased leaves eventually turn yellow and dry off. The stalks were affected and the lesions were pale yellow spindles or longitudinal stripes. They turned blackish-brown, depressed, and sometimes broken.