Analysis: 42.8% Potassium, 18.7 Sulphur

Bag Size: 25kg

A fully soluble fertiliser comprising Potassium and Sulphur, recommended for vegetables, fruits, vines, flowers, turf and ornamentals and soilless media.


Campbells Solu-K Premium is a fully water-soluble, Chloride free fertiliser containing two essential elements for your crops development, providing immediately available Potassium and Sulphur which has no negative effects on the soil.

As a Nitrogen free fertiliser, Solu-K Premium is the preferred source of Potassium and Sulphur when Nitrogen should be limited. The salt index of Solu-K Premium is lower than MOP (Muriate of Potash) and even lower than NOP (Nitrate of Potash), making it desirable as a Potassium fertiliser.


Solu-K Premium is suitable for application via irrigation systems.  It dissolves rapidly and completely and remains in solution ready for uptake via the roots.

Campbells Solu-K Premium is particularly important for:

  • Peak demand periods for Potassium
  • Where Potassium and Sulphur are required but Nitrogen nutrition is being kept to a minimum
  • Fruit and vegetable size, sugar and colour development
  • Flower development of fruit trees and ornamentals


General fertigation rates for horticultural crops are between 20 to 60 kg/ha.  When applying Solu-K Premium through the irrigation system more frequent and smaller applications guarantee the nutrients are supplied to the plants without being lost due leaching or excessive rainfall.  The actual rates, number of applications and their timing will vary considerably for different crops and for different districts.  Before application, seek advice from your Campbell’s distributor or your local agronomist.