Liquid Manganese Sulphate

Manganese sulphate solutions can provide a rapid correction of Manganese deficiency. Deficiency is a widespread problem, most commonly occurring in sandy soils and high alkaline soils. Deficiency creates a weaker structural resistance against pathogens and a reduced tolerance to drought and heat stress.

Manganese is essential to stimulate certain enzymes which helps with nitrate assimilation. It is also primarily involved in photosynthesis by aiding chlorophyll synthesis. Manganese accelerates germination and maturity and is also essential in the absorption of Phosphorous and the secondary nutrients Magnesium and Calcium.

Manganese can be applied to the soil as a component of an acidic Trace Element blend as a starter fertiliser or as a foliar application. However Foliar sprays are the most effective way of applying manganese sulphate solutions.

Analysis w/v
Manganese (Mn)- 170g/l
Sulphur (S) – 99g/l
pH – 4-5
Specific Gravity (SG) -1.40
Liquid Manganese Sulphate

Directions for Use

Soil Injection

As an addition to a multi Trace blends Manganese can contribute to early seedling health, however when applied to the soil the manganese can be locked up and bound to the soil especially in calcareous high pH soils.

Soil Injection Rate (l/ha) Water rate (l/ha) Comments
Furrow Injection2-8 litres/ha40-100 litres/ha-

Foliar Spray

Foliar sprays are the most effective. Multiple sprays may be required especially on lighter soils and when late winter/spring growth is strong and robust. Manganese should be applied from early to mid tillering and then as needed. For best results in field crops use robust water rates for good leaf area coverage as Manganese is very immobile in the plant. Manganese is also critical in flowering Lupins as deficiency will delay maturity.

Foliar Spray Rate (l/ha) Water Rate (l/ha) Comments
Cereals4-8 litres/ha70-100 litres/haEarly to mid tillering
Canola4-8 litres/ha70-100 litres/haAdequate leaf area
Beans + Legumes4-8 litres/ha70-100 litres/haAdequate leaf area

Deficiency Symptoms

  • Pale leaves that become limp and soft
  • Wilted and droopy leaves
  • Mottled and inter-veinal chlorosis
  • Patchy appearance in crops