For a long time biologicals were treated as a niche subject: fine for organic, interesting where pest pressure is light, dispensable in a high-yield system. That reading has aged badly.
The biostimulants market is valued at roughly US$4.9 billion in 2026 and is projected to reach US$8.77 billion by 2031, growing around 12% a year. Other forecasts point to US$12 billion by 2033. No input category grows at that rate by accident.
What changed in the technology
The gap between the biologicals of a decade ago and today’s has a name in the industry: Biologicals 2.0. Out went isolated strains with erratic performance; in came microbial consortia designed to work together and nano-encapsulated plant growth regulators — cytokinins and auxins — capable of sustaining crop development even in degraded soils.
Formulation improved as well. The Achilles heel of biologicals was always keeping cells alive from the laboratory to the spray tank. Encapsulation, stabilisers and better cold chain control raised consistency of results, which was precisely the historical complaint from growers.
Why adoption accelerated now
Three forces stacked up.
High mineral cost. With the global fertilizer index projected to rise more than 30% in 2026, any technology that improves nutrient use efficiency gains immediate appeal. Phosphorus-solubilising and nitrogen-fixing bacteria stopped being a curiosity and became a budget line.
Resistance pressure. Pest and weed populations resistant to chemical modes of action pushed integrated management back to the centre. In that context a biological does not replace the chemistry — it extends its useful life by reducing selection pressure.
The regenerative and carbon agenda. Market studies associate biostimulant-treated soils with a 12% to 18% increase in carbon storage capacity. That connects the input directly to carbon credit programmes and to buyers with low-emission supply chain commitments.
Who is pushing the market
Consolidation moved fast. BASF expanded a biologicals portfolio integrated with its crop protection line. Novonesis, born from the merger involving Novozymes, is now one of the largest microbial technology suppliers in the world. Syngenta absorbed Valagro to move hard into biostimulants, and Koppert consolidated its position in biological control and pollination.
In Brazil, companies such as Vittia grew on domestic inoculant and biocontrol lines, while Embrapa remains the reference for agronomic validation of strains under tropical conditions.
How to validate a biological without betting the crop
The practical rule is simple: treat a biological with the same rigour you would apply to a new variety.
Demand local data. A result generated in another biome, on a different soil type and under different pest pressure, carries little information value. Ask for trials run under conditions resembling yours.
Run strips with an untreated check. Two or three comparison strips on your own farm, harvested separately, are worth more than any brochure. Without a check, every product works.
Check tank compatibility. This is the most common cause of silent failure. Many microorganisms do not survive mixing with certain fungicides or extreme spray solution pH. If the product died in the tank, the problem is not agronomic.
Respect storage conditions. A living product left in a hot shed loses efficacy before it reaches the field. Cold chain is not a label detail.
Measure the right thing. Not every benefit shows up as yield in year one. Reduced fertilizer rates, better stand establishment, lower incidence of soil-borne disease and improved rooting are results too — provided they are measured.
On-farm production has rules and limits
A chapter of its own is multiplying biologicals on the farm itself, a practice that spread quickly in Brazil for an obvious reason: cost. In-house biofactories cut pest control expenses across large areas and give growers autonomy.
The concern is technical rather than bureaucratic. Producing microorganisms requires contamination control, standardised concentration and verification of cell viability. A poorly run biofactory does not deliver a weak product — it delivers an unpredictable one, and unpredictability in pest management costs more than purchased inputs.
Anyone choosing that route has to treat the facility as what it is: a production unit with quality control, periodic laboratory analysis and a qualified technical lead. Done that way, it works well. Improvised, it becomes a source of problems that are hard to diagnose mid-season.
Where the return usually shows up first
Three situations concentrate the best results reported in the field. The first is seed treatment, where inoculants and growth promoters work in a controlled environment at small rates, which improves the cost-benefit ratio. The second is nematode management, a problem where chemistry has known limitations and biological control earned legitimate ground. The third is residue decomposition in no-till systems, using products that accelerate cycling and release nutrients locked up in the straw.
Outside those fronts results are more variable and depend heavily on soil, field history and pathogen pressure. Starting with what responds most consistently is the least risky way to build confidence in the category.
The mistake at both extremes
Two postures are equally expensive. The first is blanket scepticism, which writes off an entire category because of one poor product tested in 2018. The second is uncritical enthusiasm, which swaps proven practice for an unvalidated biological and discovers the error at harvest.
The middle path is unglamorous and it works: adopt in stages, measure, expand what performs and discard without sentiment what does not. It is exactly what is done with any other agricultural technology — and what was rarely done with biologicals, because the category carried an ideological load for years that got in the way of technical assessment.
With expensive fertilizer and buyers demanding a smaller carbon footprint, that assessment has become mandatory. Not out of environmental conviction, but on the basis of results.
Learn more about inputs, soil and crop management at www.farmfor.com.br.
