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Magnesium Sulphate Heptahydrate

Agravita® Magnesium Sulphate Heptahydrate
  • 25 kg

Magnesium Sulphate Heptahydrate

Agravita® Magnesium Sulphate Heptahydrate

Solid inorganic macronutrient fertiliser

(Mg, S) (+16 +32)

  • 25 kg

16% Magnesium oxide (MgO) (= 9.6% Mg), soluble in water
32% Sulphur trioxide (SO₃) (= 12.8% S), soluble in water

Key benefits

Agravita® Magnesium Sulphate Heptahydrate is a high-purity macronutrient fertiliser supplying readily available magnesium (Mg) and sulphur (S) for balanced crop nutrition.

Magnesium plays a key role in chlorophyll synthesis and photosynthesis, supporting efficient energy production and leaf development, particularly during critical growth stages. This contributes to improved crop vigour, yield potential and quality.

The fertiliser supports root system function and nutrient uptake, while balanced magnesium and sulphur supply enhances nitrogen use efficiency, contributing to effective biomass production. Agravita® Magnesium Sulphate Heptahydrate also helps crops cope with abiotic stress, including drought and temperature extremes, by supporting physiological balance under unfavourable conditions.

The product’s coarse crystalline form ensures rapid and complete water solubility, while its high chemical purity allows versatile use in foliar application, fertigation and soil application. Magnesium and sulphur are supplied independently of soil pH, ensuring reliable nutrient availability across all soil types.

Agravita® Magnesium Sulphate Heptahydrate can be used preventively or interventively throughout the growing season, supporting yield, crop quality and long-term plant health.

High chemical purity ensures suitability for foliar, fertigation and soil application

Versatile application across all crop types

Coarse crystal structure supporting efficient handling and solubility

Provides readily available magnesium and sulphur independent of soil pH

Rapid and complete water solubility for efficient nutrient availability

Technology in practice

Agravita® Magnesium Sulphate Heptahydrate may be applied throughout the growing season, either preventively or in response to identified magnesium and sulphur demand, according to crop requirements and nutritional status.

For foliar application, treatments should be carried out using appropriate spraying equipment and nozzles that produce fine droplets, ensuring uniform leaf coverage and efficient nutrient uptake.

The product is also suitable for soil application, applied either broadcast or localised within the root zone, prior to sowing or planting. It is recommended for use in field crops, vegetables, orchards and nurseries, and is particularly well suited to greenhouses and polytunnels, where it effectively enriches the growing medium with readily available magnesium and sulphur.

In addition, Agravita® Magnesium Sulphate Heptahydrate is fully compatible with fertigation systems, both in open-field and protected cultivation, allowing precise nutrient delivery and flexible integration into standard crop nutrition programmes.

Application recommendations

The fertiliser can be applied in combination with most fungicides, insecticides and other fertilisers, provided that general principles for mixing chemical products are observed.
Foliar fertilisation
CropsConcentration
[%]
Water amount [l/ha]Number of treatmentsApplication timing
Agricultural crops5200–3002–5Throughout the growing season.
Vegetables and orchards1–2300–10002–5Throughout the growing season.
Other crops1–2200–3002–5Throughout the growing season.
Soil fertilisation
Recommended dosage: 100–200 kg/ha
In case of magnesium and/or sulphur deficiency.
Fertigation
Recommended dosage: 0.2–1 kg/1000 l of water.
Dose the fertiliser based on the water and soil analysis and the nutritional requirements of the plants.