Boron deficiency first manifests in young shoots, flowers, and developing fruits due to their limited mobility within the plant.

Typical symptoms:
• Flower abortion and flower drop.
• Deformed, dry, or necrotic fruit.
• Dead or deformed terminal shoots.
• Small, curled, or chlorotic young leaves.
• Weak, brittle stems.
• Reduced root growth in young plants.

Boron deficiency develops rapidly in young tissues and reproductive organs. If left uncorrected, it compromises fruit and seed production, seriously affecting crop yield and quality.

Developmental stages:
• Early: Small, curled young leaves, shoots with limited growth.
• Intermediate stage: Flower and young fruit abortion, organ deformation.
• Advanced: Necrosis in fruits, death of terminal shoots.
• End: massive drop of flowers and fruits, significant reduction in the harvest.