K-HUMATE 26
The CDFA-Certified Liquid Humic Acid That Works
A concentrated liquid humic acid and potassium soil conditioner — CDFA registered, independently verified at 20% humic acid and CEC 1,900 meq/100g. Proven to improve nutrient uptake efficiency, reduce fertiliser lockup, and build healthier, more productive soils.
What is K-HUMATE 26?
K-HUMATE 26 is Omnia USA's core liquid humic acid product. A high-concentration liquid soil conditioner formulated to improve soil biology, structure, and nutrient-use efficiency. Registered with the California Department of Food and Agriculture (CDFA), K-HUMATE 26 is verified at 20% humic acid and 6% soluble potash (K₂O), providing both biological soil benefits and direct potassium nutrition in a single application.
K-HUMATE 26's CEC (cation exchange capacity) rating of 1,900 meq/100g is one of the highest in the market, meaning it has an exceptional ability to hold and exchange nutrients in the root zone, reducing leaching losses and improving fertiliser return on investment.
How K-HUMATE 26 Works
- Increases CEC: Humic acid's high CEC improves the soil's capacity to hold cations (Ca, Mg, K, NH4+) in the root zone, reducing losses to leaching.
- Improves NUE: More nutrients stay where roots can access them, reducing the fertiliser input needed to achieve the same crop performance.
- Stimulates root growth: Humic acids chelate micronutrients and increase their bioavailability, promoting denser, more active root systems.
- Reduces nutrient lock-up: In high-pH or highly alkaline soils, K-HUMATE 26 improves the solubility of phosphorus, iron, zinc, and manganese.
- Salt tolerance: Regular use helps buffer soil salinity, reducing salt stress in crops grown in high-sodium soils common in CA, AZ, and FL.
- Supports soil biology: Humic acids are a carbon energy source for soil microbial communities. Regular application builds biological activity over time.
Guaranteed Analysis
Property
Value
Property
Humic Acid
Value
20% (CDFA registered)
Property
Soluble Potash (K₂O)
Value
6%
Property
Cation Exchange Capacity (CEC)
Value
1,900 meq/100g
Property
pH
Value
11.4
Property
Density
Value
9.17 lbs/gallon @ 68°F
Property
Form
Value
Liquid
Application Rates
Method
Timing
Rate
Method
Drip / Flood Irrigation
Timing
Split across 4–6 fertigation events per season
Rate
1–2 gal/acre per event
Method
Microsprinkler / Sprinkler
Timing
Apply with irrigation events
Rate
1–2 gal/acre per event
Method
Foliar Spray
Timing
Early season applications; can be mixed with other foliar programs
Rate
1 gal/acre in min. 20 gal water
Method
Broadcast / Soil Drench
Timing
Pre-plant or at establishment
Rate
2–5 gal/acre
Method
Annual Total Rate
Timing
Across full season
Rate
5–20 gal/acre (soil type dependent)
FAQ
Is K-HUMATE 26 certified for organic farming?
K-HUMATE 26 is CDFA registered, which qualifies it for use in California organic programs. Check your specific certification body requirements for your state.
Can K-HUMATE 26 be mixed with fertilizers?
Yes. K-HUMATE 26 is compatible with most liquid fertilizers. Always perform a jar test when combining with new products, particularly at low pH.
What does CEC 1,900 meq/100g mean?
CEC (Cation Exchange Capacity) measures how well a soil or amendment can hold positively-charged nutrients (cations). A CEC of 1,900 meq/100g is exceptionally high, meaning K-HUMATE 26 dramatically improves the soil's ability to retain applied nutrients rather than allowing them to leach past the root zone.
How is K-HUMATE 26 different from K-HUMATE S100?
K-HUMATE 26 is a liquid product suitable for fertigation and foliar application. K-HUMATE S100 is a granular/soluble powder with 70% humic acid and 21% K₂O, designed for broadcast application or dry fertilizer blending. Both deliver the same humate benefits; the choice depends on your application equipment and program.