Microbial Humic Granular Fertilizer
Humic Acid Carrier and Live Bacillus Inoculant in One Granule
2–4 mm granule · 40% humic acid · B. subtilis + B. megaterium ≥0.5×10⁸ CFU/g each · spore-forming
Product Overview
Microbial Humic Granular Fertilizer combines two things that are usually bought and applied separately: a humic acid granule and a live bacterial inoculant. The leonardite granule is coated with Bacillus subtilis and Bacillus megaterium, each guaranteed at 0.5 × 10⁸ CFU/g minimum.
The logic is that each component makes the other work better. Humic acid is a carbon source and a protective matrix — it gives the bacteria something to feed on and somewhere to survive the journey from the bag to the root zone. Bacillus, in turn, is a phosphate solubiliser and a root coloniser, so it mobilises nutrients the humic fraction is holding. Applied together, survival rates are better than either applied alone into hostile soil.
Both strains are spore-forming Bacilli, which is a practical decision rather than a marketing one. Spores tolerate drying, heat and UV far better than vegetative cells, which means the product survives storage, transport and a day in the sun on the back of a truck — the reason many liquid and non-spore inoculant products disappoint in the field.
Microbial Humic Granular Fertilizer suits bio-organic programmes, root-zone inoculation, and growers trying to reduce reliance on chemical phosphate.
Key Benefits
Two inputs, one application
Humic acid and live Bacillus in a single 2–4 mm granule. One pass across the field instead of two, one product to purchase and store, and no compatibility question between separate applications.
Spore-forming Bacilli that actually survive
Both strains form spores, which tolerate drying, temperature and UV. Non-spore-forming inoculants frequently die between the factory and the root zone — this is the most common reason a bio-product ‘does nothing’.
Humic acid protects the inoculant
The leonardite matrix is a carbon source and a physical refuge. Bacteria introduced into soil with a carrier establish more reliably than bacteria introduced alone.
Guaranteed count on the COA
≥0.5 × 10⁸ CFU/g for each strain, tested per batch and stated on the certificate — not a generic ‘contains beneficial bacteria’ claim.
Phosphate solubilisation
Bacillus megaterium is a well-documented phosphate solubiliser, releasing phosphorus locked up in the soil. Useful where total P is adequate but availability is not.
40% humic acid and 60% organic matter
The carrier is not an inert filler — it carries 40% minimum humic acid and 60% minimum organic matter, so the base does real soil work of its own.
Technical Specification
| Parameter | Specification | Test standard |
|---|---|---|
| Humic acid (dry basis) | 40.0% min | GB/T 11957-2001 |
| Organic matter (dry basis) | 60.0% min | NY 525-2012 |
| Bacillus subtilis | ≥ 0.5 × 10⁸ CFU/g | GB 20287-2006 |
| Bacillus megaterium | ≥ 0.5 × 10⁸ CFU/g | GB 20287-2006 |
| Moisture | 25.0% max | GB/T 11957-2001 |
| pH (1:100) | 5.0 – 7.0 | GB/T 33804-2017 |
| Grain size | 2 – 4 mm | Sieve method |
| Appearance | Black granule | Visual |
| Product code | JFHA-BHA-G | — |
Specification values are guaranteed minimums on a dry basis, taken from the batch Certificate of Analysis and tested against the stated Chinese industry standards. Every shipment travels with its own COA stating the tested values.
Need the full Certificate of Analysis, MSDS, or TDS for your formulation or tender file?
Request COA / MSDS / TDSForm & Solubility
Form: black 2–4 mm granules carrying a bacterial coating. Visually similar to our standard humic granule; the inoculant is applied as a coating after granulation.
Viability — handle accordingly: this is a live product. The Bacilli are spore-forming and robust, but they are still organisms. Do not store above 40 °C, do not leave in direct sun, and do not blend with high-salt fertiliser immediately before application. Those are the three things that reliably kill the count.
In water: the granule is insoluble. Do not attempt to dissolve it for fertigation — the carrier will settle and the product is not designed for that route.
Compatibility: generally compatible with organic and organic-mineral fertilizers and with most granular NPK at moderate inclusion. Avoid direct, prolonged contact with high-analysis soluble salts before application, and avoid tank-mixing with bactericides or copper-based products.
Which insoluble grade fits your process?
| Grade | Form | Humic acid | Organic matter | Size | Best for |
|---|---|---|---|---|---|
| Humic Acid Powder | 80–100 mesh powder | 40–70% | 70–82% | 80–100 mesh | Granulation feed, soil conditioner base, blending |
| Humic Acid Crystal | 2–4 mm crystal | 60% min | — | 2–4 / 1–6 mm | Direct soil application, premium organic blends |
| Humic Acid Granule | 2–4 mm round granule | 40% min | 60% min | 2–4 mm | Bulk blending, broadcasting, organic fertilizer |
| Humic Acid Prills | 2–4 mm high-hardness | 40% min | 60% min | 2–4 mm | Urea/blending, mechanical spreading, export |
| Microbial Humic Granule (this product) | 2–4 mm inoculated | 40% min | 60% min | 2–4 mm | Bio-organic fertilizer, root-zone inoculation |
All five grades come from the same leonardite seam and carry the same heavy-metal declaration (Pb, As, Hg, Cd, Cr all below detection, GB 18877). They differ in particle form and where they fit in your process — not in origin.
Applications & Dosage
Applied to the root zone — the bacteria have to reach the soil to work:
| Application | How to use | Rate |
|---|---|---|
| Bio-organic fertilizer base | Use as the biological component in a bagged bio-organic fertilizer, or blend with composted manure and amino acid granules. | 20–40% of formulation |
| Root-zone inoculation | Band or side-dress at planting so the inoculant is placed where roots will reach it. | 150–450 kg/ha |
| Vegetables and horticulture | Apply at transplanting or as a side-dress. High-value crops give the quickest return on a biological input. | 300–600 kg/ha |
| Orchard and vineyard | Apply under the canopy in bands during the active root period. Established perennials respond well to season-long colonisation. | 500 g – 2 kg per plant |
| Phosphate-limited ground | Apply where total soil phosphorus is adequate but availability is poor — B. megaterium solubilises locked-up P. | 300–600 kg/ha |
| Nursery and transplant | Incorporate into the growing medium or apply at transplanting to establish colonisation early. | 2–5 kg per m³ |
Packaging & Storage
| Pack size | Description |
|---|---|
| 20 kg / 25 kg | Woven PP bag with inner PE liner — standard export packing |
| 50 kg | Woven PP bag with inner liner — for high-volume programmes |
| 1000–1100 kg | Jumbo bag with discharge spout, 4 lifting loops |
| Custom | Private-label printed bag, OEM specification, retail sizes on request |
Storage: **This is a live product and storage affects the count.** Store in a cool, dry, ventilated place away from direct sunlight. Keep below 40 °C — a container left in the sun in a hot climate will seriously reduce viable counts. Keep bags sealed until use and off bare concrete. Under cool, dry conditions the spore-forming Bacilli remain viable for 12 months or more, but the count declines with time and temperature, so we recommend using within one season of purchase for best results. Shelf life: 12 months in original, unopened packaging stored as above.
Custom packaging, private-label printing and OEM specifications are available on request. Packaging photos are available in the product gallery.
Successful Cases
Vegetable grower, Shandong
Applies at 450 kg/ha at transplanting for successive cucumber and tomato crops under plastic tunnel. Reports more uniform early root development and a reduced need for starter phosphate. Attributes this to the Bacillus component rather than the humic — they had used plain humic granule for three seasons before switching and saw a clear difference in early vigour.
Explore humic acid applications → Agriculture · Bio-OrganicBio-fertilizer brand, Southeast Asia
Uses the granule at 30% of formulation as the biological component in a registered bio-organic fertilizer. Chose it because the guaranteed CFU count on a per-batch COA was required by their regulator — a claim of ‘contains beneficial microbes’ without a stated count was not sufficient for registration.
Explore humic acid applications →Full case studies with crop data are published in our application sectors.
Frequently Asked Questions
How long do the bacteria stay viable?
Under cool, dry storage below 40 °C, the spore-forming Bacilli remain viable for 12 months or more, which is why we state a 12-month shelf life. The count does decline with time and temperature, so use within one season for best results. Heat is the main enemy — a container left in direct sun in a hot climate will do more damage in a week than a year of correct storage.
Can I blend this with chemical fertilizer?
Generally yes at moderate inclusion with granular NPK — this is a common practice. Avoid direct, prolonged contact with high-analysis soluble salts, particularly potassium chloride, before application, as osmotic stress will reduce the count. Blend close to the time of application rather than storing the mixture for months. If in doubt, send us your formulation and we will advise.
Can I mix it with fungicides or bactericides?
No. Bactericides and copper-based fungicides will kill the inoculant, and many systemic fungicides will suppress it. If a treatment is necessary, separate the applications in time rather than combining them. This applies to seed treatments too — treated seed will carry a bactericidal coating.
What is the difference between the two Bacillus strains?
Bacillus subtilis is primarily a root coloniser and a producer of growth-promoting metabolites; it competes against soil-borne pathogens around the root. Bacillus megaterium is best known as a phosphate solubiliser, releasing phosphorus that is locked in the soil. They do different jobs, which is why both are included rather than a single strain at double the rate.
Why use a humic carrier instead of peat or inert material?
The leonardite granule is not inert. It feeds the bacteria, buffers them against pH and moisture shock, and does soil work in its own right at 40% humic acid and 60% organic matter. An inert carrier delivers the organism and nothing else; this delivers the organism plus a genuine soil amendment.
Is this registered for organic use?
The humic carrier is unprocessed leonardite and both Bacillus strains are commonly permitted inputs, but certification is granted to your finished product by your own certifier, not to our raw material. Submit our TDS, MSDS and COA to them for review. We supply these with every enquiry.
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