Liquid Magnesium Sulphate

Whilst few Australian soils in the broadacre cropping regions are deficient, Magnesium categorised as a secondary element is still just as important as the other sixteen essential plant nutrients. Crops require Magnesium to capture the suns energy for growth and production through photosynthesis. It is an essential component of the chlorophyll molecule, the green pigment where the photosynthesis occurs.

Magnesium availability decreases at low pH levels, and at high pH levels excessive Calcium may have a dominant influence on Mg uptake by plants.

Analysis w/v
Magnesium (Mg) – 50g/l
Sulphur (S) – 60g/l
pH – 3.5
Specific Gravity (SG) – 1.22
All Sulphate Labels (dragged) Copy

Directions for Use

Soil Injection

Magnesium Sulphate solution can be easily mixed with the other sulphate Trace Element liquids.

Soil Injection Rate (l/ha) Water Rate (l/ha) Comments
Furrow Injection10-80 litres/ha--

Foliar Spray

As a foliar spray Magnesium is rapidly absorbed, plant available and can be applied with a wide range of other agricultural chemicals.

Foliar Spray Rate (l/ha) Water Rate (l/ha) Comments
Broadacre crops2-4 litres/ha70-100 litres/haApply from tillering on

Deficiency Symptoms

  • In old leaves a patchy yellowing
  • Rolled and twisted looking leaves
  • Reddish colouration on edges
  • Pink necrotic spots