Huma-K

From $285

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Huma-K — bulk biological fertilizer

AgConcepts — BulkFarmer.com

Huma-K

AgConceptsHumic Acid

Potassium humate liquid combining high-analysis humic acids with soluble potassium for dual soil conditioning and fertility benefits.

Application Rate:1 qt/acre

Product Overview

Huma-K delivers two essential agronomic inputs in a single liquid formulation: premium potassium humate and fully chelated soluble potassium. This unique combination provides the soil-conditioning benefits of humic acid alongside a direct, plant-available potassium source — making it one of the most efficient soil applications available.

The humate fraction in Huma-K improves soil structure and CEC, chelates and mobilizes existing soil nutrients, and feeds beneficial soil biology. The potassium component supports critical plant functions including stomata regulation, enzyme activation, disease resistance, and water use efficiency. When humate and potassium are delivered together, each amplifies the effectiveness of the other.

Huma-K is particularly effective in high-yield production systems where potassium demand is high and soil-applied potash may be limited by tie-up or leaching. It performs exceptionally well in no-till and reduced-till systems where getting nutrients into the root zone without incorporation is a priority.

Applied through in-furrow systems, side-dress equipment, center pivots, or drip irrigation, Huma-K fits any application window and integrates seamlessly into existing programs. Its high carbon content makes it an excellent base for building biological fertility programs over multiple seasons.

When to Apply

1

Spring pre-plant broadcast

Apply before tillage to work humates and K into the root zone.

2

In-furrow at planting

Starter-band delivery for immediate potassium and humate availability.

3

Side-dress with K program

Blend with liquid potassium fertilizer to improve K efficiency.

Consult your agronomist for crop-specific timing. Rates may vary based on soil conditions, crop stage, and application method.

What to Actually Expect, Year by Year

We're not going to overpromise. Here's an honest look at what most farms experience.

🌱
Year 1

K efficiency improves fast

Potassium availability improves rapidly — humate carriers increase K uptake efficiency 15–25% vs. straight K fertilizer. Best ROI on K-deficient or high-pH soils. Run a soil test before starting to confirm baseline need.

📈
Year 2

CEC benefits kick in

The humic acid fraction starts contributing to better overall nutrient retention — not just potassium. Pairing with Super Hume amplifies CEC benefits and improves the soil's total nutrient-holding capacity.

🏆
Year 3+

Documented CEC gains

Farms running full humic programs consistently see 0.8–1.5 meq/100g CEC improvements in 3-year comparisons. Lower synthetic K rates with equivalent or better crop response. The investment pays for itself in reduced fertilizer spend.

Results vary by soil type, climate, baseline soil health, and management. These represent typical outcomes across AgConcepts customer farms.

Compatible Crops

Select Size

From $285

5-gallonSKU: HK-5G
$285
Covers 2020 acres~$14.3–$14.3/acre
55-gallonSKU: HK-55G
$2,299
Covers 220220 acres~$10.5–$10.5/acre
275-gallonSKU: HK-275G
$9,499
Covers 11001100 acres~$8.6–$8.6/acre
  • Authorized AgConcepts Dealer
  • Ships from US warehouse
  • Freight quotes available for drums & totes
  • Volume discounts for large orders

Our Promise

If it doesn't pay for itself by Year 2, we'll work with you to adjust your program — at no charge.

🔬 Product Transparency

Shelf Life
36+ months
Storage
32–100°F, protect from freezing
Source Material
Leonardite-derived humate + soluble potassium complex
Request Certificate of Analysis (COA) →

Not sure how much you need?

Use our free calculator to find the right quantity for your acreage.

Open Rate Calculator →

🚛 Estimate Freight Cost

LTL freight for drums & totes is quoted per order. Select your state for a ballpark estimate.

🌾

Talk to an Agronomist

Not sure if this product is right for your operation? Our agronomists answer questions on crop compatibility, mixing, and program design — free.

Ask a Question →

Frequently Used Together

Farmers who order Huma-K often pair it with these products for better results.

Super-Hume

Super-Hume

from $265

Super Hume adds fulvic acid fractions that increase the plant-availability of the potassium in Huma-K.

View Super-Hume
AgZyme

AgZyme

from $349

AgZyme drives the biological activity that makes Huma-K's humate work more efficiently.

View AgZyme

More Humic Acid Products

Farmer Reviews

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Donna SchmittVerified Farmer

Webster County, IA · 550 acres · Corn/Soybean, conventional till

October 30, 2025

Good potassium efficiency — my K rates are down 15 lbs/acre

I started using Huma K as a way to stretch my potassium applications on my higher-K-demand fields. The theory: humate molecules carry potassium into the root zone more efficiently, so you can apply less K and get the same uptake. After two seasons I'm comfortable saying this works. I cut my MOP rate by 15 lbs/acre on my corn ground and applied Huma K at 1 qt/acre. My tissue potassium levels came in at the same ranges as before the rate cut. My soil test K levels are stable —…
2 seasons used·cornsoybeansconventional tillpotassium

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