Damage Symptoms

Choanephora Rot first attacks the blossoms and progresses into the developing fruit causing a wet rot at the blossom end. Sporulation by the fungus appears as spines with dark heads on the surface of infected tissues.


Conditions for Development

Occurs on squash and develops during periods of high rainfall and humidity. The spores are spread by insects, wind, and splashing water.


Control

Crop management practices that reduce soil moisture (raised beds), fruit injury, or prevent soil contact with the soil (plastic mulches or trellising) are recommended. Fungicidal sprays are not particularly effective but may in some instances reduce fruit losses.