TPSL Plant Natural® Soil Test for Legumes
Built for Beans, Peas, and Cover Crops That Fix More Than Just Nitrogen
Healthy Soil is the Foundation of Strong, Productive Legumes
Whether you're growing soybeans in the Midwest, alfalfa in the Southwest, chickpeas or lentils in the Northwest, or using clover or vetch in your cover crop rotation, legumes demand more from your soil than just basic fertility.
The TPSL Plant Natural® Soil Test for Legumes is specifically tailored to the nutritional and biological needs of legume crops. Unlike generic soil tests, this analysis provides crop-specific insights—including micronutrients and trace elements critical to nodulation, nitrogen fixation, and balanced root-zone health.
Why Legume Growers Need a Specialized Test
Legumes don’t just feed themselves—they feed the soil. But to thrive, they still need:
- Balanced micronutrients like boron, zinc, iron, and manganese
- Calcium, magnesium, and potassium in the right ratios for strong nodulation and uptake
- Molybdenum, a trace element essential for nitrogen-fixing enzymes
- A properly managed Na:Ca and Na:Mg balance to avoid stunting or salt-induced stress
This test provides real-world, plant-relevant data you can use to dial in your nutrition, improve stand health, and support long-term soil function.
What’s Included in Your Analysis
Soil Health & Composition
- Texture
- pH
- Carbonates (CO₃)
- Electrical Conductivity (EC)
- % Active Organic Matter
Macronutrients (H₂O & CO₂-extractable)
- Nitrate-Nitrogen (NO₃-N)
- Phosphate (P₂O₅)
- Potassium (K)
- Sodium (Na)
- Calcium (Ca)
- Magnesium (Mg)
Micronutrients & Trace Elements
- Boron (B)
- Zinc (Zn)
- Iron (Fe)
- Manganese (Mn)
- Copper (Cu)
- Molybdenum (Mo) – vital for symbiotic nitrogen fixation
Soil Ratios
- Sodium-to-Calcium (Na:Ca)
- Sodium-to-Magnesium (Na:Mg)
Your Report Includes:
- 2-Page Color-Coded Lab Report
Visual breakdown with severity levels, optimized for legume interpretation - Customized Recommendations
Tailored for legume crops only, including soybeans, alfalfa, clovers, peas, lentils, vetch, chickpeas, and more - Plant Removal Rates
Know what nutrients your crop will deplete—and how to replenish efficiently - Fertilizer Guidelines
Targeted nutrient strategy to support both plant growth and soil nitrogen contribution
Sample Requirements
- Sample Size: 3–4 cups
- Sample Depth: Topsoil only (0–12 inches)
- Turnaround Time: 5–7 business days from lab receipt
- Sampling Kit: Not included. A clean quart-sized Ziploc bag works great.
Perfect For:
- Commercial soybean and alfalfa growers
- Farmers using legumes in cover cropping or rotation programs
- Organic and regenerative operations focused on nitrogen cycling
- Gardeners and small-scale growers cultivating peas, beans, or lentils
- Ranchers managing forage legumes for pasture
Why Use TPS Lab for Legume Soil Testing?
- Extraction method simulates real plant-available nutrients
- Designed for crop-specific performance, not generic fertilizer upsells
- Backed by 80+ years of experience helping growers across the U.S.
- Includes molybdenum testing, which many labs skip—but legumes require
Order the TPSL Plant Natural® Soil Test for Legumes Today
Support your legumes with a soil test as hardworking as they are. Get the targeted insights you need to boost yield, improve nodulation, and build better soil.
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.
