Which conditions are most favorable for the formation of radiation fog?

The conditions which are most favorable for the formation of radiation fog are warm, moist air over low flat land areas,on clear, calm nights.
Radiation fog is most prevalent during the winter and fall; it usually forms overnight as the air closest air to the ground cool down. When the cooling makes the air to reach saturation point, radiation fog will formed. 

Telophase colchicine is a chemical obtained from plants that prevents the assembly of spindle fibers