What is foliar burn?

Foliar burn refers to damage that occurs to leaves as a result of applying too much nitrogen or other fertilizers. When plants absorb excessive nutrients, particularly in dry conditions or when there is a lack of sufficient water, the concentration of salts can increase within the leaf tissue. This leads to dehydration and injury, resulting in symptoms such as browning, drying, or scorching of leaf edges or surfaces.

Understanding foliar burn is important for fertilizer applicators since it emphasizes the necessity for balanced nutrient application and the importance of considering environmental conditions when feeding plants. Proper fertilization strategies should aim to meet plant nutrient needs without causing damage, ensuring healthy plant growth and minimizing the risk of foliar burn.