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Create the Ideal Recipe for Your Soil

OrganiCalc is an online worksheet for balancing your soil minerals in order to improve soil health and nutrient dense crops.

Enter your Logan Labs soil test results and answer a few questions about your growing situation. OrganiCalc uses the best practices of today’s regenerative agronomists to determine the right mineral amendments for your soil. It eliminates math errors and provides you with plenty of notes and reference material to back up your decisions.

OrganiCalc standard amendments are approved for use in certified organic production (check with your certifier).

The recommended amendments won’t cause mineral excesses in your soil. OrganiCalc is conservative by nature. It creates an ideal mineral recipe for your unique soil and crop.

Need more power for your farm? OrganiCalc Pro adds support for saturated paste and irrigation water tests as well as customizable amendments and mineral targets.

New in Version 8!

OrganiCalc for Gardens

We’ve expanded support for different crops and added handy per-bed recipes.

Choose your crop. OrganiCalc will adjust the N, P, B and pH targets based on your crop choice.
We’ve added an Amendment Recipes page where you can enter up to 4 different areas, for example, each for the area of a single planting bed. All your recipes are on one page.
The form is reorganized and easier to use.

OrganiCalc Pro

All of the new features in OrganiCalc for Gardens plus…

Saturated paste test report analysis
Irrigation water test report analysis
A new Summary page with Soil, (Saturated) Paste & Water test results side-by-side. This page shows status levels for each measurement: Very High, High, Balanced, Low, Very Low.
We’ve increased the minimum targets for calcium, magnesium and potassium in low CEC soils.

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OrganiCalc for Gardens

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OrganiCalc for Gardens
$39.50

Subscribe to
OrganiCalc Pro

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OrganiCalc Pro
$84.50

Which OrganiCalc Shall I Choose?

	OrganiCalc for Gardens	OrganiCalc Pro
Designed for Logan Labs std soil test reports - Std M3, AA, AA8.2, extras, BFA Ag-dyn3
Analyze as many soil test reports as you care to
Trusted algorithm for choosing amendments
New in v8! Recommendations for your choice of crops: vegetables, cane berries, blueberries, strawberries, fruit trees, citrus, annual flowers, perennial herbs, ornamental perennials, cannabis		Default
Recommendations for only OMRI organic amendments		Default
Error checks for typos
Adjusts for sample depths other than 6"
Adjusts amendment amounts for your area to be amended
New in v8! Provides amendment amounts for up to 4 additional areas (e.g. per bed)
Adjusts for depth to dig in amendments
Choice of US or metric units
Choice of Nitrogen target
Choice of 2 N-P-K fertilizers with "best fit" N-P-K hint
One custom N-P-K fertilizer
Choice of cation targets for sand, clay or loam		Default
New in v8! Analyze Logan Labs saturated paste test alongside soil test
New in v8! Analyze irrigation water test separately or alongside soil and saturated paste test.
Edit all mineral targets and target pH.
Enter up to 2 custom carbon-based N-P-K composts or fertilizers. Amounts are adjusted automatically for moisture content.
Form remembers last entries
Required for commercial customers
Access to Soil Analyst forum