A Professional Soil Test with Expert Recommendations for Stronger, Healthier Crops

Grow Smarter with Precision Soil Insights

If you're serious about growing healthy, high-performing crops, guesswork won’t cut it. Our TPSL Plant Natural® Soil Test + LOI gives you clear, science-based answers about your soil’s health—and what to do next.

Whether you're managing a backyard garden, a specialty crop operation, or a commercial farm, this test provides the data and expert recommendations you need to maximize productivity, correct imbalances, and improve long-term soil health.

What’s Included in Your Analysis:

Soil Properties

• Texture
• pH
• Electrical Conductivity (EC)
• Carbonates (CO₃)
• % Active Organic Matter
• Total Organic Matter (LOI)

Nutrient Levels

• Nitrate-Nitrogen (NO₃-N)
• Phosphate (P₂O₅)
• Potassium (H₂O & CO₂ extractable)
• Sodium (H₂O & CO₂ extractable)
• Calcium (H₂O & CO₂ extractable)
• Magnesium (H₂O & CO₂ extractable)

Micronutrients

• Zinc (Zn)
• Iron (Fe)
• Manganese (Mn)
• Copper (Cu)
• Boron (B)

Soil Ratios

• Sodium to Calcium (Na:Ca)
• Sodium to Magnesium (Na:Mg)

What You’ll Receive:

• Color-Coded 2-Page Lab Report
  Easy-to-read results with critical values highlighted for quick interpretation.
• Crop-Specific Fertility Recommendations
  Includes guidance for up to two crops of your choice.
• Nutrient Removal Rates
  Shows how much your chosen crops are likely to remove from the soil, helping guide long-term fertilization plans.
• Fertilizer Application Guidelines
  Tailored recommendations to help you apply the right products, at the right rates, at the right time.

Sample Requirements & Turnaround

• Minimum Sample Size: 3–4 cups of soil
• Turnaround Time: 5–7 business days from receipt at the lab

Need Help Understanding Your Results?

Optional 1-on-1 consultations are available with our Certified Crop Advisor for just $25 per 10-minute session. Get personalized answers, strategy, and next steps to make the most of your report.

📞 Call us to schedule a consultation after receiving your results.

Why Choose TPS Lab?

• Over 80 years of experience in agricultural testing
• Trusted by commercial growers, landscapers, and home gardeners
• Real human interpretation— not just raw data
• Support from Certified Crop Advisors who understand your growing conditions

Order Your Soil Test with LOI Today

Get the answers your soil has been hiding. With lab-backed data and expert guidance, you’ll finally know what to apply—and what to avoid—to grow your best crops yet.