Magnesium Nitrate — Mg & N for Hydroponics and Foliar Correction
Magnesium sits at the centre of the chlorophyll molecule — deficiency shows as interveinal yellowing on older leaves and directly limits photosynthesis. Magnesium nitrate delivers 11% N and 15% MgO in a fully water-soluble crystalline form ideal for hydroponic nutrient solutions, greenhouse fertigation and rapid foliar correction. Low insolubles (0.1% max) ensure clean operation in precision dosing systems. From 1,000 MT.
Product Data
- FOB
- CFR
- CIF
- Agriculture
- Blending
- Fertigation
Hydroponic Use
In recirculating hydroponic systems, magnesium nitrate maintains Mg²⁺ at 30–50 ppm depending on crop category. Tomatoes and peppers require higher magnesium than leafy greens. Crystalline product dissolves rapidly at 20°C; store sealed in dry conditions below 25°C to prevent caking. Available in 25 kg bags and bulk big-bag format for commercial greenhouse operations.
FAQ
How does magnesium nitrate differ from magnesium sulphate (Epsom salt)?
Both supply magnesium, but magnesium nitrate adds nitrate nitrogen alongside MgO, making it suitable when both nutrients are deficient. Magnesium sulphate adds sulphur instead — choose based on soil or nutrient solution analysis.
What concentration is safe for foliar magnesium nitrate sprays?
Apply 1–2% solution (10–20 g/L) on fruit crops during early fruit set. Avoid spraying above 30°C ambient temperature to prevent leaf scorch from rapid evaporation.
Can magnesium nitrate be combined with calcium nitrate in the same tank?
Yes — calcium and magnesium nitrates are fully compatible in fertigation solutions. This combination is standard in greenhouse A/B tank systems where calcium and magnesium are supplied together in the B-concentrate.