Catalogue · Nutrient deficiency correctors and specific nutrients
POTASIO K20
- Pack size
- 250 mL
- Reference
- Price list and pack sizes
- Status
- Availability on request
- Pack size
- 1 L
- Reference
- Price list and pack sizes
- Status
- Availability on request
- Pack size
- 5 L
- Reference
- Price list and pack sizes
- Status
- Availability on request
- Pack size
- 20 L
- Reference
- Price list and pack sizes
- Status
- Availability on request
- Pack size
- 1,000 L
- Reference
- Price list and pack sizes
- Status
- Transport on request · a thousand litres do not travel by courier
Suitable for use in organic farming · Ecocert attestation
View the attestationTotal potassium oxide (K2O) 20.00% w/w · foliar
FENORGANIC POTASIO K20 is a liquid potassium corrector with 20.00% w/w total potassium oxide (K2O) – 16.6% w/w potassium (K) – and 10% single-cell freshwater algae solution. It is applied by fertigation, 3-6 L/ha per application, splitting the input into a maximum of 6 L/ha at 10-15 day intervals, and by the foliar route, 2-3 L per 1,000 L of water per application, on fruit trees, vegetable and arable crops; in severe deficiency, up to 4 applications.
It can be used at any stage of the cycle and is especially indicated during fruiting. In our olive grove fertilisation programme it closes the season as the fourth foliar treatment, at ripening, at 3 litres per tank. It is listed in the Ecocert input attestation as suitable for use in organic farming and it is supplied in five pack sizes, from 250 mL to 1,000 L.
Official FenOrganic technical data sheet · Technical content reviewed: November 4, 2026 · Price list and pack sizes: septiembre de 2026
CompositionTotal potassium oxide (K2O) 20.00% w/wView the full composition
ApplicationfoliarView the dosage table
Before applyingPrecautions and safety (5)
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Pack sizes
All pack sizes, with their price per unit.
5 pack sizes of POTASIO K20, each with its reference. Final price · Spanish VAT included. Price list and pack sizes updated: September 2026.
| Pack size | Reference | Final RRP | Price per unit | Status |
|---|---|---|---|---|
| 250 mL | 52715 | €3.10 | €12.40/L | Availability on request |
| 1 L | 10041993 | €9.46 | €9.46/L | Availability on request |
| 5 L | 10041994 | €35.79 | €7.16/L | Availability on request |
| 20 L | 10042970 | €134.41 | €6.72/L | Availability on request |
| 1,000 L | 10043102 | €5,551.56 | €5.55/L | Transport on request |
DeliveryDelivery price · 21 % VAT included
Delivery rates of the online shop (Spain and Portugal), by zone and by weight band; for other European countries, request a quotation. The amounts are final: 21 % vat included.
In the online shop, transport is confirmed according to the dispatch weight and the destination before payment. The table below is the rate by zone and weight band; the amount for your order is set when you confirm it, and nothing is charged beforehand.
Mainland Spain
| Band | Price |
|---|---|
| Up to 5 kg | €7.95 |
| Over 5 up to 10 kg | €8.95 |
| Over 10 up to 20 kg | €12.95 |
| Over 20 up to 30 kg | €20.95 |
| Over 30 up to 40 kg | €26.95 |
| Over 40 up to 60 kg | €38.95 |
| Over 60 up to 80 kg | €50.95 |
| Over 80 up to 100 kg | €62.95 |
Portugal
| Band | Price |
|---|---|
| Up to 5 kg | €19.95 |
| Over 5 up to 10 kg | €27.95 |
| Over 10 up to 20 kg | €43.95 |
| Over 20 up to 30 kg | €59.95 |
| Over 30 up to 40 kg | €76.95 |
| Over 40 up to 60 kg | €108.95 |
| Over 60 up to 80 kg | €140.95 |
| Over 80 up to 100 kg | €173.95 |
Majorca, Ibiza and Minorca
| Band | Price |
|---|---|
| Up to 5 kg | €16.95 |
| Over 5 up to 10 kg | €24.95 |
| Over 10 up to 20 kg | €37.95 |
| Over 20 up to 30 kg | €54.95 |
| Over 30 up to 40 kg | €70.95 |
| Over 40 up to 60 kg | €105.95 |
| Over 60 up to 80 kg | €140.95 |
| Over 80 up to 100 kg | €176.95 |
Formentera
| Band | Price |
|---|---|
| Up to 5 kg | €29.95 |
| Over 5 up to 10 kg | €36.95 |
| Over 10 up to 20 kg | €55.95 |
| Over 20 up to 30 kg | €74.95 |
| Over 30 up to 40 kg | €93.95 |
| Over 40 up to 60 kg | €131.95 |
| Over 60 up to 80 kg | €169.95 |
| Over 80 up to 100 kg | €207.95 |
Above 100 kg, delivery is on request: palletised delivery is assessed according to order value, volume and destination.
Technical data sheet
Composition, dosage and directions for use.
What you need in order to apply POTASIO K20: precautions, nutrient contents, dosage by use, crops and compatibilities.
01 · SafetyPrecautions and safety
- Owing to its high pH, pre-dilute before pouring into the irrigation or spray tank and add an acidifier
- In fertigation, split the input: maximum 6 L/ha at 10-15 day intervals
- Shake the container vigorously before use
- Use under technical advice; keep at room temperature
- Physical characteristics and appearance may vary owing to the organic nature of the product
02 · CompositionComposition and physical properties
| Component | Content |
|---|---|
| Total potassium oxide (K2O) | 20.00% w/w · 26.80% w/v |
| Total potassium (K) | 16.6% w/w · 22.24% w/v |
| Single-cell freshwater algae solution | 10% |
03 · DosageDosage and directions for use
| Use | Dose |
|---|---|
| Fertigation, maintenance (fruit trees, vegetable and arable crops) | 3-6 L/ha per application; severe deficiency: up to 4 applications |
| Foliar, maintenance (fruit trees, vegetable and arable crops) | 2-3 L / 1,000 L per application; severe deficiency: up to 4 applications |
| Fertigation, limit per application | split the input, maximum 6 L/ha, at 10-15 day intervals |
| Olive grove, fourth treatment (ripening), together with Universal 3 L and Nutriplus 10 2 L | POTASIO 20: 3 litres |
Application route
- Foliar
- Fertigation / irrigation
- Any irrigation system, flood, drip, foliar, etc.
- Application: foliar or to the soil
Application timing
- Any stage of the growing cycle
- Especially during the fruiting stage
- Vegetative stage, post-flowering and stages of highest vegetative activity: fruit set, ripening
- Citrus: from the start of colour break
- Fruit trees: from the start of flowering
- Cotton and vegetables: during the season
- Flowers: every 20-30 days throughout the season
- Olive grove: fourth treatment of the annual programme, at ripening
- Hemp: bulking stage
Doses are indicative and depend on the crop, the phenological stage and the level of deficiency. For your specific case, please consult our technical department.
04 · CropsCrops
- Fruit trees: olive, almond, pistachio, grapevine, citrus, apple, pear, blueberry, almond, avocado, mango
- Vegetable crops: tomato, potato, cucumber, melon, courgette, cauliflower, onion, carrot, pepper
- Arable crops: cereals, lucerne, cotton, sugar beet, maize, sunflower
- Cotton, citrus, fruit trees, vegetables, flowers
- Olive grove (fourth treatment, ripening; for the monthly foliar on young olive trees the programme uses other products)
- All types of crops
This product is part of our olive grove fertilisation programme, treatment by treatment. All crops, with the recommended products for each one.
05 · MixingCompatibility and incompatibilities
Do not mix with
- Do not mix with highly alkaline products
- Do not mix with products containing phosphorus and/or calcium
- Compatibility exceptions: alkaline-reaction products and mineral oils
06 · Organic suitabilitySuitability for organic farming
“suitable for use in organic farming”
It is listed in the annex to the ECOCERT S.A.S input attestation Nº 245895/29/290920251037 (“UE - Atestación de Insumos” programme, Reglamentos (UE) n°2018/848 y n°2021/1165), valid until 31 de marzo de 2027. Also in the annex to attestation Nº 245895/29/290920251035, “USDA NOP - Atestación de Insumos” programme.