Alternatives to copper in Scab control affect mineral composition in leaves and fruits of apple varieties with reduced Scab susceptibility or Scab resistance.

Scab (Venturia inaequalis) is the principal disease endangering both integrated and organic apple production. Scab pressure tends to build up over the years and organic farmers rely mainly on copper and sulphur treatments for control. The use of Cu in crop protection received scrutiny in recent years as this metal tends to accumulate in soil and substrates.