Bulk Microbial Inoculants & Biofertilizer Manufacturer

High-CFU single strains and custom blends, produced in our own U.S. fermentation facility and shipped factory-direct to growers, formulators, and distributors in 40+ countries.

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Since 200520 years fermenting
24 strainsbacteria & fungi
40+ countriesshipped factory-direct
20,000 sq ft8 fermenters
DNA-testedin-house
CoA per lotevery batch

Trusted by 300+ distributors and formulators, and thousands of growers worldwide

Who we serve

One manufacturer, built for every kind of buyer

Distributors & ag retailers

Reliable bulk supply, consistent high-CFU specs, and private-label options that let you compete on quality and margin. Factory-direct pricing with documentation buyers trust.

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Formulators & manufacturers

Pure single-strain inputs at verified CFU counts, DNA-confirmed identity, and a Certificate of Analysis with every lot. Consistent inputs for consistent finished products.

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Growers & cooperatives

Beneficial bacteria and fungi that support root vigor, nutrient availability, and resilience under stress. Available as single strains or crop-matched custom blends.

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About ABI

Soil microbial products, manufactured in Wisconsin since 2005

From our 20,000-square-foot fermentation facility in Wisconsin, USA, eight fermenters produce thousands of pounds of high-CFU powder each month, with ample capacity for growing bulk and private-label programs.

We produce an extensive portfolio of beneficial bacteria and fungi, from Bacillus subtilis and Bacillus megaterium to Trichoderma harzianum and Aspergillus niger, each maintained in our proprietary strain library and produced under strict quality protocols. By manufacturing in-house and shipping factory-direct, we give growers, formulators, and distributors reliable access to consistent single strains and custom blends.

Talk to our team
Applied Biotech Industries fermentation facility at 520 Progress Drive, Belgium, Wisconsin

Our strains

24 microbial strains, single or blended

Every strain is available as a bulk single-species inoculant or as a component in a custom blend, at the CFU count you specify.

Beneficial bacteria (14)

Bacillus subtilisBacillus licheniformisBacillus amyloliquefaciensBacillus pumilusBacillus megateriumBacillus mucilaginosusBacillus methylotrophicusBacillus velezensisBacillus thuringiensisBacillus coagulansBrevibacillus laterosporusPseudomonas fluorescensPseudomonas protegensStreptomyces rochei

Beneficial fungi (10)

Trichoderma harzianumTrichoderma koningiopsisTrichoderma longibrachiatumTrichoderma asperellumAspergillus nigerAspergillus oryzaeBeauveria bassianaPaecilomyces lilacinusPenicillium bilaiaeEndo mycorrhizae
Proven in the field

Results that hold up in the ground

+36%tomato yield in a Georgia field trial, +$192K gross profitSee the trial →
+26%strawberry production, with sweeter, higher-Brix fruitSee the trial →
+39%pepper root mass, with 100% transplant survivalSee the trial →
2.2xtissue phosphorus uptake in 3 weeks, verified by independent labsSee the trial →

Results from blends built with ABI-manufactured microbes. See the case studies →

In-house DNA thermocyclers used to verify microbial strain identity
Quality you can verify

Every strain, confirmed by DNA

In-house DNA testingEvery strain genetically confirmed for identity and purity.
Certificate of AnalysisCFU count and QC data with every lot.
Non-GMO strainsNaturally occurring, suitable for organic programs.
Organic-compatibleOur microbes are components of OMRI Listed formulations.
Custom blends

Custom microbial blends, formulated to spec

Need a specific consortium for a crop, a region, or your own branded product? We formulate custom blends from any of our 24 strains at the CFU counts you specify, manufactured and packaged to your requirements. Minimum order $1,000. 50g samples available on request.

Build a Custom BlendLearn more about our custom microbial blends →
Packaged ABI microbial product staged for a customer order
FAQ

Frequently asked questions

What is a microbial inoculant, and how is it different from a biofertilizer?
A microbial inoculant is a product of living beneficial bacteria or fungi applied to soil, seed, or roots to support root development, nutrient availability, and soil biology. A biofertilizer describes the same kind of product from a plant-nutrition angle, using microbes that help make nutrients such as nitrogen and phosphorus more available to the crop. In practice the terms overlap, and our high-CFU inoculants are used as both across row crops, specialty crops, and turf.
How are microbial inoculants used, and how are they applied?
Our inoculants ship as high-CFU powders that dissolve for application by soil drench, seed treatment, in-furrow, fertigation, or foliar programs. Growers and formulators select the strains and rates that fit their crop and equipment, and blends can be matched to a specific crop or region. Because you set the CFU count, the same strain works in a concentrated input or in a finished branded product.
How do I get pricing, and can I request a sample?
Request a quote through our contact form with the strains, blend, CFU count, and volume you need, and we will send factory-direct pricing and documentation. 50g samples are available on request for evaluation. Wholesale and bulk pricing applies to qualifying programs.
Do you sell microbial inoculants in bulk and offer private label?
Yes. We manufacture in bulk from our own U.S. fermentation facility and supply distributors, formulators, and large growers at wholesale pricing. We also produce private-label microbial inoculants and biofertilizers, formulated and packaged to your specification so you can build a branded portfolio.
What CFU counts are available?
You set the potency. We manufacture high-CFU powders and match the CFU per gram your program or formulation requires, whether you need a concentrated single strain or a component for a larger blend. Every lot ships with a Certificate of Analysis that states the CFU count.
Are your microbes non-GMO and suitable for organic production?
All ABI strains are naturally occurring and non-GMO, which makes them well suited to certified-organic and regenerative programs. The same ABI-produced microbes are used as components in OMRI Listed formulations. We can advise on which strains fit your certification requirements.
How do you verify strain identity and quality?
We confirm the identity and purity of every strain in house before it ships, and each batch is produced under strict quality protocols with its potency verified. Results are documented on a Certificate of Analysis that ships with every lot, and all strains are held in a proprietary in-house library so identity stays consistent from batch to batch.
Do you ship internationally, and how should inoculants be stored?
Yes. We ship factory-direct from our Wisconsin facility to growers, formulators, and distributors worldwide. Store the powders in a cool, dry place out of direct sunlight, keep them sealed after opening, and use them within the shelf life stated on the Certificate of Analysis to protect microbial viability.
Where are ABI's microbial inoculants manufactured?
All ABI microbial inoculants and biofertilizers are manufactured in the United States, at our 20,000-square-foot fermentation facility in Wisconsin. Producing in Wisconsin lets us control quality end to end, from our proprietary strain library through fermentation, DNA verification, and packaging. Buyers get consistent, U.S.-made soil microbial products backed by documentation on every lot.

Request a quote

Tell us the strains, blend, CFU count, and volume you need. We reply with pricing and documentation, factory-direct. Samples available on request.

Request a QuoteRequest a 50g Sample
Applied Biotech Industries, 520 Progress Drive, Belgium, WI 53004. info@abimicrobes.com, (262) 285-4390. Open Monday to Friday, 8am to 4pm.
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