Built for Beans, Peas, and Cover Crops That Fix More Than Just Nitrogen

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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.

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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.

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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)

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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

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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.

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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

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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

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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.