Potassium deficient lily
Potassium deficient coffee
Potassium deficient tree
TIP BURN IN OLDER LEAVES
Cause and Notes: • Several possible causes, including boron toxicity, sodium toxicity, fluoride toxicity, potassium deficiency, or high soluble salt • Wind, heat or drought stress will often aggravate this symptom • A leaf analysis will help diagnose tip burn
Examples: • Seen in gingko, ornamental grasses and magnolias, among others
How to Correct: • Treat deficiencies with the nutrient that is lacking
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