What Are the Signs of Nutrient Deficiency in Crops?

“Signs of nutrient deficiency in crops vary based on the specific nutrient lacking but generally include stunted growth, yellowing or discoloration of leaves, and poor fruit or flower development. Nitrogen deficiency often causes older leaves to turn yellow, phosphorus deficiency can lead to dark green or purplish leaves, and potassium deficiency typically shows as yellowing or browning at leaf edges.”