Hydrolysed soya protein is a chelating carrier, an organic nitrogen source and a biostimulant claim in one line item. What it replaces on a blender’s raw-material list.
Most raw materials on a blender’s list do one job. The reason hydrolysed soya protein is worth a closer look is that it does several, and they are jobs that are usually bought, stored and metered separately. That makes it unusual in a category where adding capability normally means adding SKUs.
Three jobs, one line item
Start with what it is: soya protein broken down enzymatically into peptides and free amino acids, dried to a free-flowing powder at 80% w/w protein minimum and 12% w/w nitrogen minimum, fully soluble in water at 2% w/v. Each of those numbers is doing different work in a formulation.
| The job | Usually bought as | What the hydrolysate does |
|---|---|---|
| Chelating carrier | A separate chelating agent, or metal sulphates with no carrier at all | Binds the metal to peptides and amino acids, keeping it in solution across the working pH range |
| Organic nitrogen | A mineral N source, or a separate organic-N input | 12% w/w nitrogen minimum, slower to release and less prone to leaching |
| Biostimulant claim | A bought-in amino-acid or seaweed component | Free amino acids from enzymatic hydrolysis, at 80% w/w protein minimum |
| Formulation aid | A wetter or adhesion additive in foliar grades | Lifts foliar wetting and adhesion, and holds metal in solution in the tank |
As the chelating carrier
In an amino-acid chelated micronutrient, the metal is bound to the peptide backbone rather than sitting in the blend as a free sulphate salt. That keeps it in solution instead of depending on the acidity of the blend to stay available, and it means the carrier under every micronutrient in the grade is the same material behaving the same way.
The practical consequence is in the plant rather than the paddock: because the seven amino-acid chelates share a backbone, a blender can add or swap an element without re-testing how the base behaves. Zinc out, manganese in, same carrier.
As the organic nitrogen
At 12% w/w nitrogen minimum it is a nitrogen input in its own right, and an organic one. Protein-bound nitrogen mineralises as the protein breaks down rather than arriving all at once, so it releases more slowly than mineral nitrogen and is less prone to leaching. For a grade that is already carrying micronutrients, that nitrogen comes free of an extra line item.
As the biostimulant claim
Free amino acids are what a biostimulant claim rests on, and enzymatic hydrolysis is what produces them. For a blender, that is the difference between selling the same NPK grade as last season and selling an upgraded one — without reformulating around an unfamiliar input or buying in a separate amino-acid component.
It is worth being careful here. What we can tell you is the protein and amino-acid content, batch by batch, on the certificate of analysis. What the finished grade claims, and how it is registered and labelled, is the blender’s call — we supply the raw material and the analysis behind it.
What it actually removes from the list
- →A separate chelating agent, where the alternative was buying one and blending it with metal salts.
- →A separate organic-nitrogen input, where organic N was wanted alongside the micronutrients.
- →A bought-in amino-acid or biostimulant component for grades carrying that claim.
- →A wetter or adhesion additive in foliar grades, where the hydrolysate is already in the tank.
Four fewer things to source, store, meter and reconcile. That is a different kind of saving from a cheaper tonne — it shows up in handling steps and stock lines rather than in the unit price.
Where it does not help
It is not a universal chelate. The protein carrier holds metals well across the mildly acidic to near-neutral range, which covers most of what a blend has to do. Where a grade has to survive high-pH calcareous ground, iron in particular comes off an amino-acid ligand and precipitates out of reach; that is a job for EDDHA Fe-6, and we have written about why the chelate fails before the crop does. And where one input has to cover six elements at once, the EDTA mixture is the simpler answer.
What to send us
Tell us which grades you are formulating, what you currently buy for each of the four jobs above, and an indicative annual volume. We can generate compatibility test data on request, so a trial answers how the material behaves in your blend rather than only what it is. Specifications for Soya Protein Hydrolysate and the rest of the Grow range are published, with a certificate of analysis against them on every batch.
Supplied as a raw material for blending and formulation. Values are typical and provided in good faith; they do not constitute a specification for any finished product. Inclusion rates, compatibility with other inputs and finished-grade registration and labelling remain the responsibility of the blender.