What is a common symptom of nutrient deficiency in plant leaves?

Yellowing or chlorosis is a well-known symptom of nutrient deficiency in plant leaves, particularly associated with a lack of essential elements such as nitrogen, iron, or magnesium. When the plant does not receive adequate nutrients, chlorophyll production is impaired, leading to the yellowing of leaf tissues. This condition can start with the older leaves of the plant and may progress if deficiencies are not addressed.

Chlorosis may vary in appearance depending on the nutrient deficiency; for example, a nitrogen deficiency often results in a uniform yellowing of the leaves, while iron deficiency may cause yellowing of younger leaves with the veins remaining green, a condition known as interveinal chlorosis. Recognizing chlorosis is crucial for diagnosing nutrient deficiencies and taking appropriate corrective actions, such as fertilization or soil amendment, to restore plant health.