What is Your Substrate Trying to Tell You?

The following articles by Professor Bob Tripepi originally appeared in Taproot, the official publication of the Idaho Nursery and Landscape Association.

• The properties, pH and EC of soilless potting mixes (PDF)
• Cation exchange capacity (CEC) and carbon to nitrogen (C:N) ratio (PDF)
• Methods used to measure pH and CEC (PDF)
• Physical characteristics and ways to adjust the pH and CEC (PDF)
• Chemical and physical analysis (PDF)