Hydrobio's pilot moves to AgroParisTech FarmInnLab

Hydrobio's semi-industrial pilot programme is hosted at FarmInnLab, the AgTech incubator of AgroParisTech. The programme takes the amendment out of laboratory quantities and produces it at the scale a farm actually consumes.

What FarmInnLab is

FarmInnLab was opened by AgroParisTech in 2024 as a space for experimentation on agricultural innovation, sited at the school's experimental farm at Thiverval-Grignon, west of Paris. It selects projects once a year through an open call, screened in two stages by a steering committee.

The asset it offers is the farm itself: about 400 hectares, half in arable crops and half in forage, alongside 190 dairy cattle, 650 sheep, a biomethane unit, roof-mounted solar, and a dairy processing workshop. Companies working on equipment, on agricultural inputs, or on decision-support tools get access to that infrastructure, to the school's analytical and metrology capacity, and to its teaching and research staff.

The gap where soil-amendment claims break

Most soil amendments do not fail at the bench. They fail between the bench and the spreader. A formulation that behaves perfectly in a 500-gram batch under a fume hood is a different material at 500 kilograms, and different again after a week in a bulk bag, a lorry, and a centrifugal spreader on a windy morning.

This is the usual reason a promising amendment produces excellent trial data and disappointing commercial results. The product that reached the field was not the product that was tested. A semi-industrial pilot exists to close that gap before customers do it for you.

Three things a laboratory cannot answer

Batch consistency

Hydrobio's mineral component works because micronisation multiplies its specific surface area by roughly 200. That figure is a property of a particle size distribution, not of a recipe. At laboratory scale the distribution is tight because the quantity is small. At production scale it has to stay tight across a full run, and across runs made on different days from different raw material lots. The pilot measures the spread, not the average.

Mycorrhizal viability at scale

The biological half of the amendment is alive, which makes it the fragile half. A petri dish tells you a consortium is viable. It does not tell you how many propagules survive being blended into a mineral carrier, bagged, handled, transported, and thrown from a spinning disc. Viability has to be counted at the point of application, on material that has been through the whole chain, or the number means nothing.

On-site formulation

Hydrobio is formulated on site rather than manufactured centrally and stored, specifically so that living mycorrhizae are introduced shortly before they enter the soil. That is a logistics claim as much as an agronomic one, and it has never been tested against a real farm calendar: dry components delivered, assembled locally to a HydrobioFormul recipe, applied within hours, in weather and on a schedule nobody controls. A pilot on a working farm is the only place that question has an answer.

Why an agronomy school specifically

A commercial pilot site gives scale. An agronomy school gives scale plus instrumentation and independence. Replicated plots, characterised soils with a history of measurement, calibrated analytical equipment, and staff whose professional standing does not depend on the result being favourable. When our controlled-trial figures are eventually put to independent field validation, the method has to be defensible to people who read trial protocols for a living.

What it enables next

Three outputs matter. A production protocol with specified tolerances rather than a laboratory method. A viability figure measured at the spreader instead of at the bench. And a dossier of characterised, replicated data of the kind that homologation under EU Regulation 2019/1009 requires — a file that is in preparation, and that a pilot at semi-industrial scale is the fastest legitimate way to fill.