āĻļā§€āĻ°ā§āώ āĻĒā§‹ā§œāĻž (āϟāĻŋāĻĒ āĻŦāĻžāĻ°ā§āύ)

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āĻŽā§‚āϞ āϤāĻĨā§āϝ

  • Caused by calcium deficiency at the leaf tip — calcium transport requires transpiration
  • Common in fast-growing, densely headed lettuces: butterhead, romaine, Boston types
  • Occurs even when reservoir calcium levels are adequate
  • Triggered by low VPD, high humidity, and insufficient airflow across the canopy
  • Prevention: increase airflow, reduce humidity, space plants wider, use oscillating fans
  • Some lettuce varieties are genetically tip-burn resistant — choose these for dense systems

āϏāĻŽā§āĻĒāĻ°ā§āĻ•āĻŋāϤ āĻļāĻŦā§āĻĻ

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āĻļā§€āĻ°ā§āώ āĻĒā§‹ā§œāĻž (āϟāĻŋāĻĒ āĻŦāĻžāĻ°ā§āύ) — āϏāĻ‚āĻœā§āĻžāĻž | grow.food | grow.food