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Maximum blueberry performance

Mivena has extensive expertise in blueberry cultivation. Our specialised fertilizer, Granusol WSF 11+6+18+2MgO+TE BB, is specifically developed for blueberries and delivers the essential nutrients required for optimal growth and production.

For the best results, we recommend combining basic fertilization with Horti-Cote Plus and water-soluble fertilizers such as Granusol WSF or Granufert WSF. This strategy provides a balanced and reliable nutrient supply, supporting healthy crop development and high yields throughout the season.

For tailored fertilizer advice, please contact your local Mivena dealer or distributor.

Step 1

Which growing system do you use?

Select your system to see the fertilization programme that matches your situation.

Field-grown

Open field or plastic mulch. Field-Cote CRF as base at planting, steered weekly by Granusol WSF fertigation.

Substrate

Peat, Coco, rockwool or perlite. Horti-Cote Plus CRF Toptress, steered via 1- or 2-tank Granusol WSF drip.

Step 2

Fertilization programme per growth stage

Based on Mivena’s official strawberry programmes. CRF provides stable base nutrition; Granusol WSF enables precise weekly steering.

Growth stage	Nutritional need	Recommended product	Target
🌱 Flower bud development	Stable base nutrition to support early season growth and bud activation	Field-Cote CRF 22+5+10+5MgO+TE 6M 50–70 g/plant once	Controlled nutrient release as a solid nutritional base for the full production period
🌿 Leaves development	Balanced vegetative growth with emphasis on nitrogen, potassium and magnesium	Granusol WSF 11+6+18+2MgO+TE+MV10 20–40 kg/ha/week Drip EC: 1.0–1.2 mS/cm No covering foil EC: 1.5 mS/cm Traces Micro High MgO 0.5–1 kg/ha/week	Stimulates leaf development, chlorophyll formation and strong vegetative plant growth
🌸 Flowering period	Consistent nutrient availability to support flowering and plant balance	Granusol WSF 11+6+18+2MgO+TE+MV10 Continue as needed based on crop development	Maintain crop balance and support a smooth transition from vegetative growth to fruit formation
🫐 Fruit setting period	Higher nutritional input with balanced support for fruit set, berry sizing and crop strength	Granusol WSF combination 11+6+18+2MgO+TE+MV10 / 27+15+12+MgO+TE+MV10 30–50 kg/ha/week Drip EC: 1.5 mS/cm (1.3–1.7) Traces Micro High MgO 1–2 kg/ha/week	Supports fruit set, plant energy, magnesium supply and uniform berry development
🧺 Harvest period	High potassium demand for fruit quality, colour, firmness and shelf life	Granusol WSF 4.5+11+36+5MgO+TE+MV10 20–40 kg/ha/week Drip EC: 1.0 mS/cm Traces Micro High MgO 1 kg/ha/week	Promotes fruit quality, firmness, ripening performance and post-harvest shelf life
🍃 After harvest period	Restore plant strength and maintain nutritional balance after production	Field-Cote CRF Residual effect depending on timing and crop cycle Granusol WSF Apply only when needed based on crop condition and analysis	Support recovery, maintain healthy foliage and prepare the plant for the next cycle

Growth stage	Nutritional need	Recommended product	Target
🌱 Flower bud development	Stable base nutrition to support early season growth and bud activation	Horti-Cote Topdress 21+5+10+CaO+3MgO+TE Topdress application as base fertilization	Controlled nutrient release as a solid nutritional base for the full production period
🌿 Leaves development	Balanced vegetative growth with emphasis on nitrogen, potassium and magnesium	Granusol WSF 11+6+18+2MgO+TE+MV10 20–40 kg/ha/week Drip EC: 1.0–1.2 mS/cm Traces Micro High MgO 0.5–1 kg/ha/week	Stimulates leaf development, chlorophyll formation and strong vegetative plant growth
🌸 Flowering period	Consistent nutrient availability to support flowering and plant balance	Granusol WSF 11+6+18+2MgO+TE+MV10 Continue as needed based on crop development	Maintain crop balance and support a smooth transition from vegetative growth to fruit formation
🫐 Fruit setting period	Higher nutritional input with balanced support for fruit set, berry sizing and crop strength	Granusol WSF combination 11+6+18+2MgO+TE+MV10 / 27+15+12+MgO+TE+MV10 30–50 kg/ha/week Drip EC: 1.5 mS/cm (1.3–1.7) Traces Micro High MgO 1–2 kg/ha/week	Supports fruit set, plant energy, magnesium supply and uniform berry development
🧺 Harvest period	High potassium demand for fruit quality, colour, firmness and shelf life	Granusol WSF 4.5+11+36+5MgO+TE+MV10 20–40 kg/ha/week Drip EC: 1.0 mS/cm Traces Micro High MgO 1 kg/ha/week	Promotes fruit quality, firmness, ripening performance and post-harvest shelf life
🍃 After harvest period	Restore plant strength and maintain nutritional balance after production	Horti-Cote Topdress Residual effect depending on timing and crop cycle Granusol WSF Apply only when needed based on crop condition and analysis	Support recovery, maintain healthy foliage and prepare the plant for the next cycle

Stage	Nutritional need	Recommended product	Target
🌱 October planting – plug plants	Stable base fertilization in substrate for young plant development and rooting	Horti-Cote Plus CRF programme: 6M option: 16+6+11+2MgO+TE at 2.0–2.5 kg/m³ 8M option: 15+6+12+2MgO+TE at 2.5–3.0 kg/m³ Dosage: 2.5–3.0 kg/m³	Controlled nutrient release for uniform young plant growth in substrate propagation
💧 Early propagation / fertigation	Focus on ammonium-based nitrogen, low nitrate levels, and gentle EC build-up during rooting	Granusol WSF 11+6+18+2MgO+TE Blueberry Special	Support rooting and early vegetative development with blueberry-specific nutrition
🌿 Rooted young plants	N:K ratio of approx. 2:1 to 1:1, depending on the desired growth strategy	Granusol WSF programme Adjust based on available products and plant response Keep nitrate low and focus on ammonium-based nutrition	Guide balanced vegetative growth while maintaining crop control and root activity
⚡ EC strategy	Start with a low EC, only slightly above the water EC, then gradually increase after rooting	Fertigation guideline Start at a few tenths above water EC Increase gradually to EC 1.0–1.5, depending on water EC	Prevent stress in early propagation and ensure smooth nutrient uptake after establishment
🌧 Water quality consideration	With rainwater or demineralized water, avoid excessive acidity and maintain a suitable ammonium balance	Formula selection Choose a formulation with slightly less ammonium, but still a high ammonium fraction and minimal nitrate	Maintain a stable root environment and avoid overly acidic conditions in substrate systems

Acidifying effect of Granusol 11-6-18

The acidifying effect of Granusol 11-6-18 depends on dosage, water quality and the overall fertigation strategy.
This graph shows how bicarbonate levels decrease over time at different dosages. Higher application rates result in a faster reduction of HCO3.
In practice, the final effect should always be assessed together with irrigation water analysis, crop stage and target root-zone pH.