Scouting

Look at both sides of every tree.
"We want to find NEW outbreaks so we have to look at every tree."-WA grower

The best time for scouting is when symptoms are most prominent, shortly before harvest.

Flag or tag trees you want to sample for testing

Examples of types of flagging and tagging:

Give each tree a unique name. Including variety and location in the name can be useful.

Taking a GPS point on sampled trees can make it easier to return to a tree at a later date.