Olive Leaf

When to Sample: Collect during the winter dormancy period.

Where: From 25 trees, sampling 4 twigs per tree and 2 leaves per twig.

How: Choose leaves that were formed in the spring of the year preceding the sampling.

Quantity: 200 leaves per sample.

Conditioning: Place the batch of leaves in a clean, sturdy plastic bag. Label each batch clearly with: Name, address, variety, rootstock, date of sampling, and plot reference.

Precautions: Avoid sampling from diseased, poorly formed trees, or from the edge of the plot. Sample as far away as possible from treatment periods.