Price from:
$490 .00 MT
Direct debit price
Excludes gst, and freight & handling charges


N 0.0
P 9.0
K 0.0
S 11.0
Mg 0.0
Ca 20.0
  • Fertmark guarantee
  • Rebateable

Product Description

Superphosphate is a manufactured fertiliser, containing plant-available phosphorus and sulphur for optimum pasture growth. It varies in colour from brown to dark grey.

Why Use Superphosphate

  • ​Cost effective fertiliser for pasture development.
  • Ideal for capital and maintenance applications.


Superphosphate contains phosphorus and sulphur in a ratio of 1 to 1.22.​

Caution When Mixing

Superphosphate generally mixes well with other products, but is not compatible with: Potassium Nitrate, Ammonium Nitrate, Mono Ammonium Phosphate (MAP), Cropmaster DAP, Calcium Ammonium Nitrate (CAN) or Urea.

Superphosphate can be compatible with Flexi-N (magnesium coated Urea) and Ammonium Sulphate Granular under certain circumstances.

Segregation may occur when mixed with product with differences of particle size, please refer to our compatibility chart below.

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Product Sizes available

  • Bulk
  • 20 kg

Delivery Options

  • Pickup


Important Information

  • About Superphosphate

    Superphosphate is made by reacting finely ground phosphate rock with sulphuric acid to convert the insoluble mineral to a plant available form. The colour varies from brown to dark grey depending on rock type used in manufacture.​

  • Uses

    Superphosphate is ideal for both capital and maintenance applications, however, it is primarily used as a maintenance fertiliser, providing a pool of soil solution P for pasture.

    It is also ideal for pastoral development and arable/horticultural situations where immediate responses are required.

    The calcium in Superphosphate can be important in some horticultural and hill country situations where it is uneconomic to use lime.

  • Application and advice

    Do not spread at rates over 1 tonne/ha. When applied at a rate to meet P requirements, sulphur requirements will also be met in the majority of situations.

    Spreading rates will vary according to farm type, climate, productivity and soil type.

    Soil testing and fertiliser plans are available to ensure you use the right product at the correct rate.

  • Storage

    Superphosphate can be stored over a season as long as it is kept in a cool, dry, well ventilated area.