--- title: "Glossaire — agronomie, laboratoire, réglementation" description: "Définitions simples des termes d’agronomie, de laboratoire et de réglementation employés sur kuzog.com, Hydrobio et Microplantes (en anglais)." canonical: "https://www.kuzog.com/fr/glossary/" last_updated: 2026-08-22 language: fr --- # Glossaire — agronomie, laboratoire, réglementation > Définitions simples des termes d’agronomie, de laboratoire et de réglementation employés sur kuzog.com, Hydrobio et Microplantes (en anglais). Canonical: https://www.kuzog.com/fr/glossary/ Language: fr The agronomy, lab and regulatory terms used across this site, defined once in plain language. Like the developer documentation, this page is English only and the same for every reader — the terms themselves do not translate without drifting from what they mean here. ## Acclimatisation The hardening step that moves a vitroplant out of sterile, humid in-vitro conditions into a greenhouse, so it survives open air and ordinary humidity before shipment. See also: https://www.kuzog.com/fr/microplantes/ ## Biochar A porous, carbon-rich material made by heating organic matter with little oxygen. Used as a soil amendment for its porosity and persistence, though quality and price vary widely between sources. See also: https://www.kuzog.com/fr/guides/sandy-soil-water-retention/ ## Cation-exchange capacity (CEC) A soil's ability to hold positively charged nutrient ions — potassium, calcium, magnesium, ammonium — on negatively charged mineral surfaces instead of losing them to percolating water. A low-CEC soil leaks applied nutrients; a higher-CEC one retains and releases them gradually as the soil solution is depleted. See also: https://www.kuzog.com/fr/blog/how-hydrobio-works/ ## Controlled trial A trial run under managed conditions against an untreated control, used for a first measurement of an effect. It is a starting point, not a substitute for a field trial: Hydrobio's headline figures come from controlled trials and are still to be confirmed in independent field trials. See also: https://www.kuzog.com/fr/hydrobio/ ## EU Regulation 2019/1009 The European Union's regulation on fertilising products. It sets the conformity assessment — the homologation dossier — a soil amendment must pass before it can be sold across the EU under the CE mark. Hydrobio's dossier is in preparation; homologation has not been granted. See also: https://www.kuzog.com/fr/hydrobio/ ## Field trial An independent trial run on working farms, on soils the developer did not select, across enough seasons to test whether a result measured in a controlled trial holds outside it. See also: https://www.kuzog.com/fr/hydrobio/ ## Hydrobio KUZOG's soil amendment: a hybrid mineral-biological product combining a micronised mineral matrix, which holds water and nutrients, with a living mycorrhizal consortium that extends the root system. It is not a synthetic hydrogel or superabsorbent polymer — the water retention comes from mineral pore structure and biology, not a swelling polymer. One application is intended to last three to five years. See also: https://www.kuzog.com/fr/hydrobio/ ## In-vitro culture Growing plant tissue in sterile, nutrient-controlled conditions inside a vessel rather than in soil. It is the base technique behind micropropagation, meristem culture and mother-plant conservation. See also: https://www.kuzog.com/fr/microplantes/ ## Jeune Entreprise Innovante (JEI) A French statutory tax status for small companies that spend a defined share of their costs on research and development. It is a threshold in the tax code that a company either clears or does not — not an award, a label or a jury decision. See also: https://www.kuzog.com/fr/about/ ## Lot traceability Identifying and documenting each production lot from culture initiation to shipment, so a delivered batch of plants can be traced back to its mother plant and production history. See also: https://www.kuzog.com/fr/microplantes/ ## Meristem culture Sanitising a plant variety by culturing only the apical dome of a shoot tip — the small zone of actively dividing cells that mature, virus-carrying vascular tissue has not yet reached — so the resulting plantlet outgrows an infection already present in the mother plant. See also: https://www.kuzog.com/fr/blog/virus-free-true-to-type/ ## Micronisation Grinding a mineral to a very fine, controlled particle size (on the order of 10 microns). Because soil chemistry happens at surfaces, micronising a mineral to that size can present on the order of 200 times more surface area to the soil solution than the same mass unground. See also: https://www.kuzog.com/fr/blog/how-hydrobio-works/ ## Micropropagation Multiplying a plant by growing many identical copies of it in sterile, in-vitro culture rather than from seed or cutting. It does not alter the plant's genetic makeup, so it is not a form of genetic modification. See also: https://www.kuzog.com/fr/microplantes/ ## Microplantes KUZOG's in-vitro plant laboratory. It multiplies disease-free, true-to-type young plants (vitroplants) by micropropagation, at a target capacity of approximately up to 10 million vitroplants a year. See also: https://www.kuzog.com/fr/microplantes/ ## Mother plant The selected, sanitary source plant that every vitroplant in a production lot is multiplied from. Its health and identity set the ceiling for everything produced downstream, which is why both selection and sanitation start here. See also: https://www.kuzog.com/fr/microplantes/ ## Mycorrhizae A symbiosis between plant roots and soil fungi: the fungus sends fine threads into soil pores far narrower than a root hair can enter, acquiring water and poorly mobile nutrients such as phosphorus in exchange for plant carbon — effectively extending the root system into more soil. See also: https://www.kuzog.com/fr/blog/how-hydrobio-works/ ## PCT extension Filing under the Patent Cooperation Treaty to extend a single patent application's priority date into the process of seeking protection in multiple countries, rather than filing separately in each one. See also: https://www.kuzog.com/fr/hydrobio/ ## Soil organic matter The decomposed plant and animal material in soil. It raises water-holding capacity and cation-exchange capacity, but — unlike a single mineral application — the gain is lost if the practice that built it (compost, cover crops, reduced tillage) stops. See also: https://www.kuzog.com/fr/guides/sandy-soil-water-retention/ ## Superabsorbent polymer (hydrogel) A synthetic polymer that swells by absorbing many times its own weight in water, sometimes used as a soil amendment for water retention. Its gain is typically fast but fades with salinity and repeated wetting cycles. Hydrobio is not this: it is a mineral-biological amendment, not a synthetic hydrogel — see the Hydrobio entry. See also: https://www.kuzog.com/fr/guides/sandy-soil-water-retention/ ## Thermotherapy Holding a plant at an elevated temperature before meristem culture, to slow a virus's spread relative to the plant's own growth and improve the odds that the excised shoot tip is clean. See also: https://www.kuzog.com/fr/blog/virus-free-true-to-type/ ## True-to-type A claim that a multiplied plant is genetically identical to the mother plant it was taken from. Micropropagation supports this claim because it copies tissue rather than crossing genes. See also: https://www.kuzog.com/fr/microplantes/ ## USPTO patent application A patent application filed with the United States Patent and Trademark Office. Filed means the application has been submitted and is under examination — it is not the same as a granted patent, and this site names which one applies at every mention. See also: https://www.kuzog.com/fr/hydrobio/ ## Viral indexing Laboratory testing of a plant lot for the major viruses known to affect that species before it leaves production, so 'virus-free' is a tested claim rather than an assumption from a healthy appearance. See also: https://www.kuzog.com/fr/microplantes/ ## Vitroplant A young plant produced by in-vitro culture from a fragment of a selected mother plant. It is sanitised against major viruses and genetically identical to the mother stock it was taken from. See also: https://www.kuzog.com/fr/microplantes/ ## Water-holding capacity (réserve utile) The share of water a soil can hold in its pores at a tension plant roots can still overcome. A sandy soil's pores are wide, so most of a rainfall or irrigation event drains below the root zone before roots draw from it: the parcel is short of storage, not of water. See also: https://www.kuzog.com/fr/guides/sandy-soil-water-retention/ ## Sitemap - [Sitemap (Markdown)](https://www.kuzog.com/sitemap.md): every page in every language, with its Markdown twin. - [sitemap.xml](https://www.kuzog.com/sitemap.xml) - [llms.txt](https://www.kuzog.com/fr/llms.txt) --- _Source: https://www.kuzog.com/fr/glossary/ · Markdown variant served via Accept: text/markdown · Full brief: https://www.kuzog.com/fr/llms.txt_