This will enable some adjustments to the fertiliser program and provide information on nutrients that are deficient or toxic. Some of the suggested nutrients in the programs in this publication may be deleted or reduced, if it is obvious that they are sufficiently high in the irrigation water and soil, including sources from compost and fertilisers from previous cropping. Symptoms of the most common nutrient deficiencies are shown in Table 3. Symptoms of common nutrient deficiencies in swedes and turnips Nutrient Symptoms Nitrogen Plants are stunted. Young and middle leaves become pale.
Older leaves develop reddish tints beginning at margins.
Yellow leaves common at the base of the plant. Phosphorus Plants are stunted. Dull purple tints develop in the older leaves. In severe cases there is brown papery scorching of old leaves. Potassium Marginal and interveinal yellowing develops on older leaves followed by scorching of affected areas.