Samples sent in for nematode assay are not tested for soil nutrients or lime requirements. Separate boxes and information sheets are available for soil test samples. This fee must be paid in advance. Take samples to a depth of 8 inches. Submit an extra pint of soil as a problem soil sample.
Field Crops Take a sample from each part of a field that has a different crop history.
For example, a 4-acre field that will be planted to tobacco next year must be sampled in two sections if it is currently planted in corn and soybeans. Label samples carefully for your records. If the rows of the previous crop are identifiable, sample there. This sampling pattern is appropriate for a 5-acre field with a distinct crop history. Except for areas larger than half an acre, or where soil type differs greatly from one end of the garden to another, one sample will suffice.