Newsletter by Arden Andersen
Please note there are a few differences between what Dr. Arden Andersen describes in this well written description of Reams testing and the terminology used with the Morgan test here at International Ag Labs.
- When Dr. Arden Andersen refers to Phosphate and Potash, he is referring to Phosphorous and Potassium.
The Morgan test results give a Phosphorous to Potassium ratio of 1:1, whereas Dr. Anderson describes a Phosphate to Potash ratio of 2:1. For grasses the ratios would be 2:1 and 4:1 respectively. The actual ratio is still the same but the terminology has changed over time.
New terminology measures ERGS in mircosiemens—not micromhos.