Cultural control (Apple powdery mildew)

This is based on removal of primary inoculum by pruning.

  • In winter prune out silvered shoots.
  • At pink bud and petal fall prune out primary blossom and primary vegetative mildew.
  • This must be done rapidly to limit spread of inoculum.
  • Where primary mildew levels are high, removal of inoculum may be the only way to reduce inoculum.