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Young Cider Apple Tree Deaths: Fungal Complex, Not Single Disease

80 cider apples over 4 years. Recent plantings: leaves curl, drop, tree dies. No spray. Not powdery mildew or scab. Melbourne, plenty water, not hot.

Likely Causes

  • Apple scab (Venturia inaequalis) - even if not classic
  • Cedar apple rust (Gymnosporangium) - if junipers nearby
  • Powdery mildew (Podosphaera) - may not show white powder
  • Fire blight (Erwinia) - shoot blight, shepherd's crook
  • Phytophthora root/crown rot - wet soil, sudden death
  • Replant disease - specific to apple-after-apple

Why "Atomic Grow" Claims Are Unreliable

"Raises brix, cures fungus/insects" = marketing, not science. No peer-reviewed data for apple disease control.

Real Management

  1. Lab diagnosis of dying trees (essential)
  2. Resistant rootstocks (MM.111, G.41, etc.)
  3. Preventive spray program (organic: sulfur, copper, Serenade®)
  4. Site drainage critical
  5. Replant fumigation/biofumigation if apple-after-apple

80 trees = commercial scale. Invest in proper diagnosis and IPM program.

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