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 causes a uniform loss of green color, starting from the older leaves and progressing to the newer ones. This is because nitrogen is a mobile nutrient, meaning that the plant will translocate nitrogen from older leaves to newer ones when there is a limited supply of nitrogen. This results in an overall loss of green color in all the leaves.

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