Plant Tissue Tests

Plant tissue and sap testing can be a useful strategy to assess limiting nutrients in particular situations, especially when combined with observations of symptoms and soil conditions. The critical aspects of tissue testing are to ensure that the right tissue is taken at the right time and taken under the right conditions. Samples need to be quickly sent for analysis - in Australia preferably to an ASPAC certified laboratory.
The presentation provides some more detail in sampling guidelines as well as a brief discussion of how critical levels are developed and how they can be interpreted.