Humic Acid Granules | Leonardite-Sourced | Rocky Mountain BioAg

Natural Humic Acid Granules — Leonardite-Sourced Soil Conditioner

RMBA Humic Acid Granules are a premium blend of humic compounds sourced from ancient leonardite deposits in New Mexico. Containing humin, humic acids, and fulvic acids, this product delivers a concentrated, broad-spectrum source of organic matter that measurably improves soil biology, nutrient availability, and crop performance across all soil types and crops.

⚠ Cannot Ship to California. This product is not available for shipment to California addresses.

Benefits of Use

• Builds Soil Carbon & Organic Matter: Continuously increases soil carbon levels and long-term organic matter with each application.
• Improves Cation Exchange Capacity (CEC): Increases the soil's ability to retain and supply plant-available nutrients.
• Increases Water Holding Capacity: Improves soil porosity and moisture retention for better water distribution and drought resilience.
• Improves Soil Structure: Promotes flocculation of clay particles, improving friability, aeration, and drainage.
• Stimulates Root Development: Promotes stronger root mass and growth for better nutrient and water uptake.
• Improves Germination Rates: Supports faster, more uniform seed germination.
• Aids Nutrient Uptake: Chelates and mobilizes nutrients into plant-available forms, improving fertilizer efficiency.
• Supports Soil Food Web: Feeds and activates beneficial micro- and macroorganisms for lasting soil fertility.
• pH Buffering: Acts as a neutral buffer to condition both acidic and alkaline soils.

Product Features

• Broad Soil & Crop Compatibility: Suitable for all soils and all crops — field crops, vegetables, trees, vines, turf, and horticulture.
• No Incorporation Required: Effective when surface-applied; incorporation is not necessary.
• Low Dust Formula: Less than 3% dust — clean to handle and blend.
• Leonardite Source: Derived from naturally occurring, oxidized humic substances from New Mexico deposits.

Application Guidelines

Rate

• 75–150 lbs. per acre for field crops and sod — banded or side dressed
• 150–300 lbs. per acre for trees, vines, and specialty crops — broadcast incorporated

Timing

• Broadcast in fall, post-harvest, or early spring
• Apply pre-plant or with seed

Methods

• Broadcast application across the soil surface
• Banded application — with seed, fertilizer, or after planting
• Compatible with standard dry fertilizer blending equipment

Guaranteed Analysis

• Total Humic Acid (HA) & Fulvic Acid (FA): 70.0% (Colorimetric Test Method)
• Total Humic Acids (HA): 40.0% (HPTA or ISO 19822 Method)
• Total Humic Acids (HA): 35.0% (CDFA Method)
• Derived from leonardite; less than 3% dust and 18% moisture

Physical Properties

• Form: Dry granule
• Appearance: Dark reddish-brown to black particles; no odor
• Source Material: Naturally occurring, oxidized humic substances (leonardite) — New Mexico
• Concentration: 70% humic/fulvic acid
• Dust Content: Less than 3%
• Moisture: 18%

Frequently Asked Questions

What is the difference between humic acid, fulvic acid, and humin?

All three are fractions of humic substances. Humin is insoluble and builds long-term soil structure. Humic acid is soluble at higher pH and improves CEC and water retention. Fulvic acid is soluble at all pH levels and is the most bioavailable fraction, directly supporting nutrient uptake and root activity. RMBA Humic Acid Granules contain all three fractions.

Can I blend this with dry fertilizers?

Yes. The low-dust granule format is compatible with standard dry fertilizer blending equipment and does not clump with non-hygroscopic inputs.

Why can't this ship to California?

California has specific registration requirements for soil amendment products. This product is not currently registered for sale in California.