Which problem is frequently seen in newly formed leaves due to potassium deficiency?

Potassium deficiency in plants often manifests through a specific symptom known as "marginal chlorosis," where the tips and margins of the leaves turn yellow. This occurs because potassium is essential for various physiological processes, including the regulation of stomatal movement and the synthesis of proteins and carbohydrates. As potassium levels drop, the plant struggles to maintain proper hydration and nutrient transport, leading to yellowing in the leaf tissue starting at the edges.

In newly formed leaves, this yellowing often presents as a distinct pattern where the outer parts of the leaf burn or discolor, reflecting the plant's inability to support healthy leaf development due to inadequate potassium. The other symptoms associated with potassium deficiency, such as stunted growth or dark green coloration, may be observed but do not represent the classic and immediate symptom of yellowing tips and margins found in younger leaves.