Your crop is Calcium deficient.

• Calcium is essential for cell wall structure and plant strength.
• Calcium is utilized for continuous cell division and formation.
• Calcium promotes uptake and transportation of other nutrients.
• Uptake of Calcium is primarily through the new root hairs and the root tip
• Nitrogen-use efficiency of urea-containing fertilizers is increased with soluble calcium sources such as calcium nitrate
• Form used by plants: Ca+2