The market is vast! The application scenarios of magnesium sulfate heptahydrate are continuously expanding BY:Lydia

It can be completely water-soluble. Agricultural magnesium sulfate comes in two types:

1.Magnesium sulfate heptahydrate (MgSO₄·7H₂O): Highly soluble in water, most commonly used in agricultural materials

2. Magnesium sulfate monohydrate (MgSO₄·H₂O): Slightly slower water solubility, higher content

Both can be used as raw materials for soil drenching, drip irrigation, and foliar feeding, with no residue.

Magnesium sulfate itself does not contain nitrogen, phosphorus, or potassium!

- Nitrogen (N): 0%

- Phosphorus (P₂O₅): 0%

- Potassium (K₂O): 0%

It only provides two major macronutrients: magnesium and sulfur

Conventional agricultural content:

Magnesium heptahydrate: Magnesium ≥ 9.8%, Sulfur ≥ 12%

Magnesium heptahydrate: Mg≥16%, S≥22%

1.Single-element fertilizer

Magnesium sulfate crystals/powder: Magnesium fertilizer, sulfur fertilizer, foliar spraying, fertigation, drip irrigation, supplementing magnesium to prevent yellowing leaves, fruit cracking, and blossom end rot.

2. Water-soluble fertilizers for medium and trace elements (most commonly used)

Magnesium-sulfur-calcium fertilizer: Magnesium sulfate + calcium nitrate/calcium chloride, replenishes calcium and magnesium, suitable for fruits, vegetables, and general use

- Magnesium-Iron-Zinc-Boron Fertilizer: Magnesium sulfate + Ferrous sulfate + Zinc sulfate + Boric acid, Foliar Micronutrient Fertilizer

Medium-sized water-soluble fertilizer (National Standard Registration): Magnesium + Sulfur as the main components, with optional calcium addition

3. Compound Fertilizer/Macro-element Water-Soluble Fertilizer Additive

Add magnesium sulfate to nitrogen, phosphorus, and potassium water-soluble fertilizers to produce magnesium-containing macronutrient water-soluble fertilizers (balanced type, high-potassium type)

- Used as magnesium and sulfur supplements in blended and compound fertilizers to improve soil magnesium deficiency

4. Functional agricultural supplies

Soil conditioner: improves acidic soil, supplements sulfur and magnesium, and mitigates salinization

Rooting Fertilizer Ingredients: Mix with humic acid, amino acids, nitrogen, phosphorus, and potassium to create a rooting liquid fertilizer

Magnesium sugar alcohol/chelated magnesium complex: magnesium sulfate + sugar alcohol, enhances foliar absorption

5. Crop-specific Fertilizer

Fruit tree magnesium fertilizer: for citrus, grapes, and apples, prevents small leaf disease and magnesium deficiency yellowing

- Specialized for Vegetables: Prevents blossom end rot in tomatoes and peppers, prevents yellowing in cucumbers

Economic crops: tea, tobacco, cotton, with sulfur and magnesium supplementation to enhance quality