Ramularia Leaf Spot - Beet
First seen as light brown angular spots (4-7 mm in diameter) on older leaves. When mature, these spots have a dark brown-reddish margin with silvery-white centres. Under magnification, white sporulation can be seen. Infected leaves turn yellow, become necrotic and die.
Survives on infected crop residue. Spores are spread by wind and splash dispersal. Infections occur at high humidity and mild temperatures (17-20ºC).
Favoured by wet, humid and mild weather conditions.
Ramularia can cause significant defoliation if persistent favourable climatic conditions occur.
Escolta has a label claim for the control of Ramularia.