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The leaf symptom of interveinal necrosis [carijó leaf] has been directly related to the phytotoxicity of fungicides. However, several fungi and insects that attack soybean plants can promote this reflex symptom, which can lead to diagnostic errors in the field. Stem fly [Melanagromyza sp.], mealybug [Dysmicoccus brevipes], red root rot [Fusarium solani] and root-knot nematode [Meloidogyne spp.]