Damping Off – Rhizoctonia spp. – Fusarium spp. – Pythiumspp.
Damping off
Common name
Damping off
Causal agent
It is a fungal disease caused by members of several genera, including Alternaria, Fusarium, Rhizoctonia, Pythium, and a lot more.
Scientific name
Rhizoctonia spp.
Fusarium spp.
Pythiumspp.
Symptoms & Signs
Damping off prevents the seedlings from emerging from the soil and produces discolored water-soaked seedling stems. This makes the stems thin like a thread. The leaves also turn grayish-brown and wilt due to inadequate nutrition. Roots are mostly absent and, if present, are stunted. There is a gray mold growth in some plants under high humidity.
Transmission
The virus can be transmitted to other plants by means of infected tools, wind, insects, water, or human contact. The fungi grow rapidly in cool, wet conditions.
Time of concern
Early spring to late summer
Common hosts
Potato
Tomato
Cucumber
Apple
Peach
Pumpkin