Final diagnosis


Potassium deficiency

Advanced stage of <b>potassium deficiency</b> with severe leaf deformation, metallic aspect (bronzing) and brown necrosis of the edges of the leaves.
Deformation, brightness and discolouration of the leaflet margins caused by potassium deficiency
Embossing, shine and discoloration of the edge of the leaflets of a potato leaf caused by a <b>potassium deficiency</b>.
Advanced stage of potassium deficiency with severe leaf deformation and brown necrosis of the edges of the leaves