Soil and plant testing for truffle cultivation in North America by Shannon M. Berch and Mark Coleman

Purpose of this document
Part 1: Soil testing for truffle cultivation
Part 2: Plant nutrition tests for truffle cultivation
Part 3: Interpretation of soil and plant tests
Appendix 1: Calculating plant leaf nutrient concentrations in proportion to N concentration
Appendix 2: Units and conversions back to a standard with which recommendations are made
Literature…