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The pathogens that infect cannabis plants cause different symptoms. (A)–(C) Fusarium causes yellowing of foliage and internal stem necrosis. (D)–(F) Pythium causes wilt and crown necrosis. (G)–(I) Golovinomyces causes powdery mildew on leaves and inflorescences. (J)–(L) Botrytis causes bud rot. Respective pathogen cultures are shown in (C), (F) and (L).
