• Cotton (Texas) Root Rot

      Olsen, Mary (College of Agriculture, University of Arizona (Tucson, AZ), 2015-02)
      The most important disease of woody dicotyledonous plants in Arizona is Phymatotrichopsis root rot (Cotton or Texas root rot) caused by a unique and widely distributed soil-borne fungus, Phymatotrichopsis omnivora. The fungus is indigenous to the alkaline, low-organic matter soils of the southwestern United States and central and northern Mexico.