Your crop is Iron deficient.

• Iron serves as an activator for biochemical processes such as protein synthesis and forming of respiratory enzyme systems.
• Iron is a component of many enzymes associated with energy transfer, nitrogen reduction and fixation, and lignin formation.
• Because Iron (Fe) is immobile in the plant, deficiency symptoms appear on newly formed leaves or terminal growth.
• Form used by plants: Fe+2 (ferrous) or Fe+3 (ferric). However, Fe+3 must be reduced to the ferrous form before uptake can occur.