LOOK FOR

Look for in shoots
• NITRATE BURN
• Damage near the shoot tip
  
  Look for in leaves
• NITRATE BURN
• Tan scorched areas (with thin yellow edges) between leaf veins
• Vines with dark green leaves
  

   CONDITIONS

• Tissue analyses are often needed to correctly identify nutritional disorders
• NITROGEN TOXICITY
• Causes leaves to turn brown and die.