TERRACLOR® 400 fungicide is a flowable ornamental soil fungicide containing 40% pentachloronitrobenzene (PCNB). TERRACLOR 400 is a preventive fungicide used to control certain soil-borne diseases such as Rhizoctonia spp. and Sclerotinia spp.


  • Drench soil thoroughly with Terraclor 400 solution for best results. Consult use and rate requirements on label
  • For broad spectrum disease control, this product can be tank mixed with compatible products. Follow more restrictive labeling or precautions on the label of any tank mix product


  • Active ingredient: PCNB 40%
  • FRAC Group 14 fungicide
  • Mode of action: Lipid peroxidation and subsequent disruption of fungal cell membranes

Registered States

  • Registered
  • Unregistered
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