Iron deficiency-Potatoes | Yara Australia

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Nutrients

Potatoes - Chlorosis

Symptoms
Fe deficiency is marked by pale green and yellow color of the youngest leaves, while the veins remain darker green (intercostal chlorosis). Sometimes the youngest leaves contain no chlorophyll at all and are white in color then.

Reasons
Iron deficiency Iron deficiency mainly occurs in calcareous soils and in other soils with a high pH-value due to the low availability of Fe. In specific clay soils Fe becomes fixated and deficiency is the consequence.

Iron deficiency made worse by

High pH
Water logged soils
Calcareous soils
High copper, manganese or zinc soils

Iron is important for

Essential for photosynthesis and plant metabolism
Thus important for early leaf development, strong growth and crop productivity

Yara recommended fertilizers for Iron

YaraMila COMPLEX

potatoes: Applying 500-700 Kg/ha pre-plant or placed at least 8cm away from seed tubers at planting. Apply/Spread 300-350 Kg/ha at Hilling up/Tuber initiation. Refer to Yara crop program @ www.yara.com.au as a guide or contact your local Yara sales agronomist for advice.