What plant disorder is characterized by yellowing of leaves and is often a result of iron deficiency?

The correct answer is characterized by yellowing of leaves due to insufficient iron levels in the plant, a condition known as Fe chlorosis. This disorder typically manifests when the soil pH is high, which limits the availability of iron to plants, especially in calcareous soils. As iron is essential for the synthesis of chlorophyll, any deficiency can lead to a reduced ability of the plant to perform photosynthesis effectively, thereby causing the leaves to turn yellow while the veins may remain green.

The specificity of the term "Fe chlorosis" indicates that the issue is directly related to iron (Fe) levels, clarifying the typical symptoms and nutrient deficiency involved. Understanding this condition is crucial for the management and care of crops as it informs practices like soil testing and appropriate fertilization to improve plant health.