Catalogue · Nutrient deficiency correctors and specific nutrients
HIERRO
- 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 iron (Fe) 6.50% w/w · foliar
FENORGANIC HIERRO is a liquid iron corrector, brown, with 6.50% w/w total iron (Fe) – 8.38% w/w iron oxide (FeO) – on a single-cell freshwater algae solution (25.00% w/w). It is applied by the foliar route, 2-3 L per 1,000 L of water on fruit trees and 3-4 L per 1,000 L on vegetable crops, and by fertigation, 2-3 L/ha on fruit trees and 3-4 L/ha on vegetable crops, per application.
The indicated timings are the vegetative stage, post-flowering and the fruit set and ripening stages, generally weekly, between 2 and 4 depending on the crop. It is indicated for olive, almond, pistachio, vine, citrus, apple, pear, blueberry, avocado and mango, vegetable and arable crops. 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, with RRP incl. Spanish VAT.
Official FenOrganic technical data sheet · Technical content reviewed: November 4, 2026 · Price list and pack sizes: septiembre de 2026
CompositionTotal iron (Fe) 6.50% w/wView the full composition
ApplicationfoliarView the dosage table
Before applyingPrecautions and safety (3)
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Pack sizes
All pack sizes, with their price per unit.
5 pack sizes of HIERRO, 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 | 52713 | €2.70 | €10.80/L | Availability on request |
| 1 L | 10043012 | €8.00 | €8.00/L | Availability on request |
| 5 L | 10043013 | €29.50 | €5.90/L | Availability on request |
| 20 L | 10043014 | €114.00 | €5.70/L | Availability on request |
| 1,000 L | 10043015 | €5,280.00 | €5.28/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 HIERRO: precautions, nutrient contents, dosage by use, crops and compatibilities.
01 · SafetyPrecautions and safety
- Pre-dilute before pouring into the irrigation or spray tank; shake the container vigorously before use
- Use under technical advice; keep at room temperature, in a cool, dry place
- Physical characteristics and appearance may vary owing to the organic nature of the product
02 · CompositionComposition and physical properties
| Component | Content |
|---|---|
| Total iron (Fe) | 6.50% w/w · 7.67% w/v |
| Total iron oxide (FeO) | 8.38% w/w · 9.89% w/v |
| Single-cell freshwater algae solution | 25.00% w/w · 29.50% w/v |
Physical properties
- Physical state
- Liquid, brown
03 · DosageDosage and directions for use
| Use | Dose |
|---|---|
| Foliar — fruit trees (olive, almond, pistachio, grapevine, citrus, apple, pear, blueberry, avocado, mango) | 2-3 L/1,000 L per application; severe deficiency: up to 3 applications (to avoid bitter pit) |
| Fertigation — fruit trees | 2-3 L/ha per application |
| Foliar — vegetable crops (tomato, potato, cucumber, melon, courgette, cauliflower, onion, carrot, pepper) | 3-4 L/1,000 L per application; severe deficiency: up to 4 applications |
| Fertigation — vegetable crops | 3-4 L/ha per application |
| Foliar — arable crops (cereals, lucerne, cotton, sugar beet, maize, sunflower) | 4-6 L/1,000 L per application; severe deficiency: up to 4 applications |
| Fertigation — arable crops | 4-6 L/ha per application; maximum 6 L/ha split, at 10-15 day intervals |
Application route
- Foliar
- Fertigation
- Application via irrigation and foliar applications
- Foliar and by irrigation
Application timing
- Vegetative stage, post-flowering and stages of highest vegetative activity (fruit set, ripening, etc.)
- Generally in weekly applications: between 2 and 4 applications depending on the crop
- Fertigation: split the input (max. 6 L/ha) at 10-15 day intervals
- Severe deficiency: up to 3 applications on fruit trees / up to 4 on vegetable and arable crops
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
- Olive, almond, pistachio, grapevine (fruit trees)
- 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
- Vegetable crops (dosage), fruit trees and olive
All crops, with the recommended products for each one.
05 · MixingCompatibility and incompatibilities
Compatible with
- Being completely neutral, this fertiliser is safe and compatible with other agricultural treatments
Do not mix with
- Do not mix with phosphate products
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.