Liquid Copper Sulphate

Copper Sulphate solution is ideal for correcting copper deficiencies. Copper is only required in small amounts in plants, but is necessary for multiple functions, activating enzymes and catalyses reactions in several plant growth processes including chlorophyll formation.

Copper is immobile in the plant and can be responsible for a hidden hunger that can often go undetected. Copper is essential for the flowering, pollination, heading and seed setting phase and plays a key role in Vitamin A production.

Copper Sulphate solutions can be applied directly to the soils as a component of a starter fertiliser or as a foliar application.

Analysis w/v
Copper (Cu) -67 g/l
Sulphur (S) - 34g/l
pH – 2
Specific Gravity (SG) – 1.17

Liquid Copper Sulphate

Directions for Use

Soil Injection

Copper can be applied as a soil surface spray where if sufficiently cultivated in would expect to last 5 years. Whilst only needed in small amounts, as an addition to a multi Trace element blend is can be very effective in meeting a crops demands. Soil applied copper can become unavailable in low pH soils, with metals such as Iron, Manganese and Aluminium effecting availability.

Soil Injection Rate (l/ha) Water Rate (l/ha) Comments
Soil Surface Spray6-8 litres/ha-Adequate soil incorporation
Furrow Injection1-3 litres/ha40-100 litres/haUnder the seed

Foliar Spray

Foliar sprays are the most effective way of correcting copper deficiencies. These can be applied in a multi nutrient blends at early to mid tillering on broad acre crops or if required right up to head emergence and flowering in cereals.

Foliar Spray Rate (l/ha) Water rate (l/ha) Comments
Cereals1-1.5 litres/ha70-100 litres/haEarly tillering through to flowering
Canola1-1.5 litres/ha70-100 litres/haAdequate leaf area
Beans + Legumes1-1.5 litres/ha70-100 litres/haAdequate leaf area
Medic Pastures1-1.5 litres/ha70-100 litres/haAdequate leaf area

Deficiency Symptoms

  • Tip curl of the flag leaf in cereals
  • Straw strength becomes weak below heads and darkening of the nodes can occur
  • Leaves become weak and loose turgor and develop a bluish - grey/green shade prior to chlorosis
  • Ears prematurely dying, white heads, poor seed set