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Ministry of Agriculture, Food and Rural Affairs

LIGHTNING

Identification

  • Sudden development die-back of shoots
  • Shoots bark brown between nodes
  • Leaves shrivelled and turn brown
  • Fruit shrivelled
  • Part of the shoot may remain green with only the top part affected
  • "laddering" pattern or complete lack of tissue in the central pith area when shoots are cut lengthwise

Period of Activity
Whenever there has been severe weather.

Scouting Notes
Associated with severe weather and thunderstorms.

Look for evidence of lightning on the trellis or vine stakes, such as discoloured wire or shattered vine posts sometimes help to confirm the diagnosis more than observations on the vine themselves.

Lightning damage Lightning injury close up Lightning affected shoot Dying leaves on lightning affected shoot Laddered pith in lightning affected shootClick to enlarge.