Soil Analysis: “OrganiCalc” Automatic Worksheet – Same Results as Steve Solomon’s Manual Worksheets

Grow Abundant Gardens publishes an on-line worksheet called “OrganiCalc” that finds a set of recommended amendments from the results of your Logan Labs Mehlich 3 soil test. The area to be amended can be adjusted to suit your garden size. It’s quick and accurate. They publish the algorithm behind it, too.


http://growabundant.com

Where do the Mineralization Target Values in OrganiCalc come from?
Dr. William Albrecht established the 68% Ca, 12% Mg, about 4% K ratios in the 1950s and others have been improving on them ever since.

You can download an Excel spreadsheet (warning, it’s wide, and quite a scroll to the right) which aided in developing the target values for the Mineralization Worksheet.

TargetMinerals8c