1. Submit plant samples in PAPER bags or envelopes.  Undried samples submitted in plastic bags are prone to decay in transit.
2. Unless otherwise specified in the NCDA&CS Plant Tissue Analysis Guide, the correct plant part for most crops is the most recent mature leaf (MRML).
3. To obtain a complete nutrient analysis, submit enough plant material.  A general rule of thumb is to collect at least two handfuls of leaves.

For detailed information, please refer to the NCDA&CS Plant Tissue Analysis Guide.