Poorer resistance to lodging Inability to make full use of light Higher water consumption. These discoloured areas appear first at the leaf-margin and then spread in an irregular manner towards the centre. Finally these areas die.
Potassium deficiency becomes first evident in older leaves.
Typically, this results in premature leaf-fall. There are often morphological changes in leaves which may develop a crinkled upper surface and bend or roll inwards and appear dull. In clovers, white spots appear first at the leaf margin. Later the leaflet dies off. If you recognise potash deficiency in your crops, call us and we'll be able to custom mix a Potash contaning fertilisers, either as a straight or blended with other nutrients.