Relatively uniform loss of color in leaves, occurring first on the older ones, is usually a sign of deficiency of which of the following?

Question

Quizplus · Accepted Answer

Nitrogen deficiency typically causes a relatively uniform loss of color in leaves, starting with the older leaves. This is because nitrogen is a mobile nutrient within the plant, so when it is scarce, the plant moves it from the older leaves to the newer growth.

Relatively Uniform Loss of Color in Leaves, Occurring First on the Older