Spirfert is a water-soluble fertilizer supplier for importers and distributors worldwide — compound (NPK) and straight references, fully soluble for fertigation and foliar application.
Compound water-soluble references are built from a nitrogen source, a potassium source, and an optional trace element package — same logic as our granular range, adapted for fertigation. The list below is representative of what we regularly supply.
This list is not exhaustive. Every formula above can also be supplied with or without trace elements, and coloured on request — and if the exact ratio you need isn't listed, tell us the formula you're looking for.
Big bags (600 kg or 1,200 kg), or 25 kg / 50 kg bags — with or without pallets, on request.
Fertigation, drip irrigation and foliar spray, for field crops, greenhouse and open-field vegetables.
The formulas listed above are compound — the straight references below can also be bought individually to tank-mix. Understanding the difference explains why the two aren't interchangeable.
Pre-formulated and fully soluble as one product — no compatibility risk between nutrients, no precipitate, consistent ratio every batch. Simpler to store and dose.
Buying straights separately allows the ratio to be adjusted through the season, but mixing order matters — calcium nitrate combined directly with a sulphate or phosphate source will precipitate and can clog drip lines if not handled correctly.
Tell us the analysis, packaging or solubility you need — we'll get back to you directly.
As your fertilizer supplier in Belgium, we simply need your country, your crops, and the products you're looking for. In return, we'll come back to you with the right references and full documentation.