Managing Purpling of Corn Leaves
Even though some corn varieties have a natural purple pigmentation and low temperatures can disturb the plant's metabolism, leading to similar symptoms, purpling of corn leaver can be caused by nutrient deficiency.
Leaf tissues should be tested to ensure a correct diagnosis.
![phosphorus deficiency in corn leaves]()
Phosphorus
A dark green colour on the leaves and steam, with purplish edges, probably due to anthocyanin accumulation, indicates a phosphorus deficiency. Symptoms are worst when soils are wet and cold.
![purpling of corn leaves]()
Magnesium
Deficiencies occur first on older leaves which develop a yellow or white interveinal chlorosis. At later stages, leaves may become reddish-purple and in severe cases leaf tips and edges may die.
Magnesium deficiency can result of an imbalance with potassium. Leaf tissue analysis is recommended as Mg and K deficiency symptoms are similar.
Related articles
Reducing Yellowing of Corn Leaves
Yellowing of corn leaves is a symptom associated with nutrient deficiency.
Reducing Corn Cob Defects
Corn cob defects can be caused by nutrient deficiency. Any corn abnormality needs to be analysed before it can lead to severe corn yield losses.
Corn Nutritional Summary
Knowledge of nutrients uptake and removal in corn crops will help you determine the best nutrition program for your crop.
