Proplex ST

Proplex ST is a version of the proplex biostimulant adapted for safe use as a seed treatments on a wide range of crop species. It is a combination of multiple raw materials adding up to so much more than the sum of its parts because of its unique formulation. 

It has been well recognised in recent years that the maximum potential of field crops is determined during the vital survival and development period during the first thirty days from germination. That early growth period determines the number of seeds that will not only germinate, but survive to deliver the final yield and quality. The faster the germinating seed lays down the maximum root structure, the faster it collects nutrients to sustain rapid early growth and resist drought. The more rapid early growth is achieved the better the young plants survive adverse conditions and early photosynthetic area is optimised.

Proplex ST has been designed to complement existing seed treatments, promoting maximum germination and improving both speed of growth by stimulating hormone production, and the health of the seedling during the vital first 30 days. This produces the optimum platform on which to build yield and quality, generating maximum returns for the grower.


  • Compatible with chemical seed treatments
  • Easy to apply
  • Boosts early root development and foliar growth
  • Benefits from follow up spray of Proplex foliar at 3-5 leaf stage
  • Good start to drought resistance strategy
  • Provides the base from which to build a biostimulant programme to reduce pesticide usage

Product Specs:


Dark brown liquid

Typical analysis:

Nitrogen (N) : 20 g/L
ThioSulphur (SO3) : 50 g/
L Ascophyllum nodosum : 50g/L
Carbon 12.5 g/L Zinc (Zn) : 5g/L
Magnesium (Mg) : 3g/L
Boron (B) : 1.5 g/L
Copper (Cu) : 0.5 g/L
Iron (Fe) : 2 g/L
Manganese (Mn) : 1 g/L
Gibberellins and auxins : Trace
L- Amino acids : Trace
Betaines : Trace
Vit B1 : Trace
Coating and saftening agents

Application rates:

Cereals : 3 litres per ton of seeds Maize, Peas, Beans, Chick peas and other large seeded crops: 2-3 litres per ton of seeds Vegetables, Oilseed rape, Grass seed and other small seeded crops: 5 to 10 litres per ton