What is a common sign of zinc deficiency in corn?

A common sign of zinc deficiency in corn is the appearance of white stripes or bands between the midrib and the edges of the leaves, often referred to as "striping." This occurs because zinc is essential for several physiological processes in plants, including chlorophyll production and enzyme activity. When there is insufficient zinc, the plant struggles to synthesize chlorophyll effectively, leading to the characteristic striping.

This striping occurs alongside other manifestations of zinc deficiency, which may include overall leaf chlorosis (yellowing) and stunted plant growth. However, the distinct white bands are a more specific indicator of zinc deficiency, setting it apart from other nutrient issues that might show general yellowing or stunting. Hence, the identification of white stripes is a more precise diagnostic feature for determining zinc deficiency in corn.