California Plant Natural® Soil Test + Health Test
Track Soil Improvement Over Time with Carbon-Based Indicators & Nutrient Analysis
Measure What Matters—Biological, Chemical, and Carbon-Based Soil Health
Improving soil health isn’t a one-time event—it’s a process. The Soil Health Assessment Report helps you track year-over-year changes in soil condition by analyzing key carbon pools, nutrient availability, and biological activity. Whether you’re using cover crops, reducing tillage, or transitioning to regenerative practices, this test gives you measurable insight into what’s working and what needs adjustment.
This assessment is built around comparing two areas:
- A REFERENCE sample from a non-treated or baseline area
- A TEST sample from an actively managed or amended zone
What’s Included in Your Analysis
Soil Composition & Structure
- Texture
- pH
- Electrical Conductivity (EC)
- Carbonates (CO₃)
- Bicarbonates (HCO₃)
Macronutrients & Secondary Nutrients (H₂O & CO₂-extractable)
- Nitrate-Nitrogen (NO₃-N)
- Phosphate (P₂O₅)
- Potassium (K)
- Sodium (Na)
- Calcium (Ca)
- Magnesium (Mg)
- Sulfates (SO₄-S)
- Chlorides (Cl)
Micronutrients
- Zinc (Zn)
- Iron (Fe)
- Manganese (Mn)
- Copper (Cu)
- Boron (B)
Soil Ratios
- Sodium-to-Calcium (Na:Ca)
- Sodium-to-Magnesium (Na:Mg)
Soil Health Indicators
- Solvita® CO₂ Respiration – Microbial activity and stability
- Total Organic Matter(via Loss on Ignition – LOI)
- Active Organic Matter
- POXC(Permanganate Oxidizable Carbon) – Reflects biologically active carbon pool
Your Report Includes:
- Side-by-side comparison of treated vs. untreated areas
- Carbon pool evaluations to measure long-term improvements
- Fertilizer Guidelines based on current nutrient levels
- Plant Removal Rates to help with nutrient budgeting
- Clear interpretations and practical recommendations from soil health experts
Sample Submission Requirements
- Two separate soil samples(Reference + Test area)
- Minimum Sample Size: 2–3 cups per sample
- Turnaround Time: 5–7 business days from lab receipt
Ideal For:
- Regenerative and conservation-focused growers
- Soil consultants tracking program success
- Organic operations improving soil function
- Researchers evaluating amendment or management trials
- Farmers transitioning away from synthetic inputs
Order the Soil Health Assessment Report Today
Track progress. Measure change. Make smarter decisions.
Monitor your soil’s transformation with carbon-focused, actionable insight.
Frequently Asked Questions
- What are your business hours?
Our office is open Monday thru Friday from 8 am to 5 pm. We do close for major holidays, so we recommend ordering your testing and sending your sample early if a holiday is coming up. You can always reach us by email. Just send us a message at info@tpslab.com
- When will I get my results?
We understand that you need your results as soon as possible. That is why we make sure to begin processing your samples as soon as they arrive at our laboratory. When the results are ready, we will email them to the email address you provided on your submittal form. The list below will give you an idea of our usual turnaround times.
Soil Tests: 5-7 Business days
Water Tests: 5 - 7 Business days
Plants Tests: 24 - 48 Hours
Compost Tests: 7 - 14 Business days
Fertilizer Tests: 3 - 5 Business days
Heavy Metals Test: 7 - 14 Business days
We offer a rush option for an additional 50% of the testing cost, but we would encourage you to give yourself time to test before you get to a point where a rush is needed.
