Cherry leafroll virus

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Cherry leafroll virus
Tree Removal and Virus Control
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KEEP VIRUSES OUT IN THE FIRST PLACE!

• Buy certified virus-free replants whenever
  possible.
• Buy from a reputable nursery.
• Ask questions.
• Are the tree virus-tested? Virus-free? Tested
  for which viruses? What does virus-tested mean?
• Pollinators are just as important as the fruiting
  variety.
• Pollinators are sometimes symptomless carriers of
  viruses.

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GOOD TREE REMOVAL TECHNIQUE !
Goal is to prevent spread.
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• Many cherry viruses are transmitted by insects.
• Insects tend to be sedentary unless there is a
  reason to move.
• As cut tree limbs start to dry, the insects (and
  viruses) may move to nearby trees.

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GOOD TREE REMOVAL TECHNIQUE !

• Prevent vector (and virus) movement.
• Apply good cover spray of broad spectrum
  insecticide/miticide to tree about 7 days before
  cutting.

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OR Remove trees in winter while insects are
dormant. Remove all of the wood from the
orchard before mild spring weather.
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GOOD TREE REMOVAL TECHNIQUE !
Prevent sucker re-growth. Kill/remove as much
root as possible (herbicide/fumigation).
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How many trees have to be removed?
Root graft
Symptomatic tree to be removed.
Newly infected tree may take 2-3 years to show
symptoms.
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• Remove symptomatic trees as soon as they appear.
• Carefully monitor nearby trees / blocks over next
  2-4 seasons.