The agricultural biologicals industry is entering a new phase in 2026. Finding an effective microorganism or metabolite is no longer enough to build a competitive product. Recent formulation studies and field trials reviewed by Agrolatam show that stability, microbial viability, compatibility, shelf life and delivery are becoming decisive factors in commercial performance. For manufacturers, distributors and growers, the shift matters because it could determine which biological products move beyond promising laboratory results and perform consistently under real farming conditions.

The stakes are rising as the sector expands. Industry estimates included in the research reviewed by Agrolatam valued the global biological crop protection market at approximately $2 billion in 2024, while the biostimulant market was estimated at roughly $4 billion. As biological portfolios grow and technologies become more sophisticated, formulation is moving closer to the center of product development: an active ingredient must remain functional through manufacturing, storage, transportation, dilution and application before its biological potential can translate into agronomic performance.

Biologicals

Formulation Is Emerging as the Real Competitive Edge in Agricultural Biologicals

From discovering a microorganism to keeping it viable until it reaches the field

The challenge is particularly significant for microbial products. Unlike conventional active ingredients, living organisms can respond to temperature, moisture, oxygen, chemical interactions and changes in their surrounding environment. The carrier, therefore, is not simply an inert ingredient. Experimental work reviewed by Agrolatam indicates that carrier selection can influence microbial viability, water activity, shelf life, compatibility, dilution behavior and ultimately field performance. In practice, formulation becomes part of the biological system itself rather than just the medium used to deliver it.

One experiment involving Trichoderma harzianum illustrates the scale of that effect. In an oil-based suspension stored under ambient conditions, the conventional system had a shelf-life reference of about three months. After replacing the vegetable-oil carrier with a specialized non-aqueous formulation system, viable microorganism concentrations remained in the 10? CFU/mL range through eight months, with a substantial decline detected only after 12 months. The active microorganism did not change; the formulation surrounding it did.

Storage stability of Trichoderma harzianum

Seed treatment exposes another critical dimension of the problem. A microbial formulation must preserve the organism during storage, remain compatible with other seed-applied products and, at the same time, avoid interfering with germination or early plant development. In one recent formulation study, 17 carriers from different chemistries were screened in corn and nine showed phytotoxicity - 53% of those evaluated. The finding illustrates why choosing a carrier is not a secondary formulation decision: a system that protects the microorganism can still be unsuitable for the seed.

Carrier screening in corn seed treatment

Dose can be just as important as carrier selection. Separate corn and soybean tests found germination comparable with untreated controls across the evaluated formulations, but one formulation applied at 3 mL/kg of seed reduced radicle length by approximately 30% in both crops. At 1.5 mL/kg, root development remained comparable with controls. The result highlights a critical distinction for developers: extending microbial survival is not enough. The complete formulation must preserve biological activity without compromising seed safety at the intended commercial dose.

The next competition will be about consistency, shelf life and performance

The formulation challenge is likely to become more complex as the industry moves from well-characterized microorganisms toward new microbial species and multi-strain systems. Research reviewed by Agrolatam also points to a transition in fungal production from traditional solid-state processes toward controlled liquid fermentation and bioreactors. Greater industrial scalability brings additional requirements involving water activity, membrane stabilization, metabolic control, oxidation and protection of sensitive biological material throughout manufacturing and storage.

At the same time, developers are moving beyond living microorganisms toward metabolites and more precisely defined biological actives. Those technologies could offer greater predictability and more chemistry-like consistency, but they create another set of formulation challenges involving extraction, stability, compatibility and targeted delivery. The evidence suggests that live microorganisms and defined biological compounds are likely to coexist rather than replace one another, making formulation increasingly important across several generations of biological crop-protection technology.

Field results provide an even clearer indication of what formulation can change. In a North Carolina pumpkin trial under powdery mildew pressure, a formulated Trichoderma harzianum treatment delivered significantly greater efficacy than a commercial wettable-powder biological despite using roughly 2.5 times less fungal active material. The experimental analysis associated the improvement with better dispersion, leaf coverage and delivery of viable spores - factors that depend directly on how the biological active is formulated and delivered to the crop.

The same field program evaluated the biological treatment together with azoxystrobin. Disease-control performance was maintained while the conventional fungicide component was progressively reduced to 83%, 75%, 67% and 58% of the standard rate. The result should not be interpreted as evidence that biologicals can universally replace or reduce conventional fungicides. What it does show is the potential of designing formulations around integrated biological and chemical crop-protection systems rather than treating the two categories as completely separate technologies.

Biological-conventional program evaluated in pumpkins

Taken together, these results point to a more mature stage for agricultural biologicals. The competitive question is shifting from who has the most promising microorganism to who can transform biological potential into a stable, scalable and consistently effective product. Strain selection, fermentation quality and mode of action will remain fundamental, but they may no longer be sufficient to differentiate products once they reach commercial agriculture.

For growers, the consequences are practical. A biological product has to survive the journey from manufacturing to the warehouse, distributor, farm, seed or spray tank and finally the crop. Shelf life, compatibility, ease of application and field consistency are therefore becoming commercial attributes rather than merely formulation specifications. As biologicals become more integrated into mainstream crop-protection programs, the companies capable of solving those variables at scale may hold one of the industry's most important competitive advantages.