important
            disease problem worldwide. The host range of this fungus also includes several other solanaceous crops (pepper, eggplant, potato, and tobacco) and weeds (nightshade). The fungus survives as mycelium in living or dormant volunteer host plants.
            In the asexual stage, the fungus forms conidia in white mildew during a growing season.
            <br>These spores are easily dislodged from the infected leaves and carried long distances by wind and air currents. Spores land on leaf