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Phosphites

ES FR EN IT DE PT TL

Phosphites

⚠️ Protective equipment required for this preparation

This recipe involves handling products that may be irritating or toxic. Always wear the following equipment:

By

Potassium fosfite

Plant vitality Bio-input
commercialized Other Mineral

Other

A preparation method specific to this particular record, different from the four usual methods (infusion, decoction, maceration, fermentation).

Process summary

See the record itself for the detailed step-by-step process — there is no single generic process for this category.

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 ⛔ Not authorised EU

A biostimulant solution for foliar and root application that provides phosphorus in the form of phosphite.

Application

When to use: Routinely and occasionally

Development stage: Growth

Application description: Apply as a foliar spray (1.5–2.5 ml/l) or via irrigation/fertigation (2–3 l/ha) as a biostimulant. Consult current regulations regarding its use as a fertilizer in the EU/Spain before application. Repeat every 15–20 days.

Dose: Foliar application: 1.5–2.5 mL/L. Soil/irrigation: 2–3 L/ha.

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Regulatory status

⛔ Not authorised in the EU as a home-made preparation

Potassium phosphonates are approved in the EU as an active ingredient in plant protection products and may only be used in authorized commercial products. There is no official basis recognizing homemade phosphite as a fertilizer or biostimulant, nor is it listed among the products permitted in organic farming.

Official texts

Official sources automatically checked on 20/10/2026.

What the icons mean: ✅ Authorised ⚠️ Tolerated 🟠 Not prohibited ⛔ Not authorised EU 🔎 Status being verified Full details →

Documentary information, checked on 12/10/2026. Not a substitute for legal advice; regulations may vary from country to country. See the regulations · Substances authorised in Europe

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