Your crop is Boron deficient.

• Boron is essential for the plant growth and cell development.
• Essential for seed and fruit development.
• Improves stability and function of cell wall membranes.
• Promotes synthesis of structural carbohydrates in the cell wall.
• Flowering and nodule formation depend on adequate Boron.
• Boron plays roles in formation of sugar complexes for translocation within plants, and in the formation of proteins.
• Form used by plants: H3BO3, B(OH) -4 (at high pH)