Sampling
Samples are only needed in non-confirmed blocks. With many symptomatic trees, consider sending samples from a portion of suspect trees.
Where to sample: trees with symptoms
Sample from symptomatic limbs.
Where to sample: trees without symptoms
Sample from each leader
Material to Sample:
Submit four five-inch cuttings from diseased limb(s) including leaves and fruit stems. Including fruit is okay.
When to sample:
The week before harvest to mid-August
What NOT to send:
Old, dry, dead tissue