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Fumigant effects of SPS-33 in sweet potato TRs. (A) Inhibition of black spot disease development in sweet potato TRs. (B) Weight loss rate of sweet potato TRs. Means with different letters denote significant differences (p < 0.05). (C) DS of sweet potato TRs. **denotes significance at p < 0.01. TR, tuberous root. CF: C. fimbriata. DS: disease severity.
