Microbe Plus® PhosCal has been created via a unique process that blends and digests phosphorus acid and calcium carbonates together with selected trace elements creating an excellent nutrient supplement.

Utilising a unique digestive process Microbe Plus PhosCal is biologically active. It will help rectify nutrient deficiencies quickly and effectively.

The correct balance of phosphorus and calcium is required for plants to produce the sugars required for normal growth. Plant deficiencies in phosphorus and calcium can predispose a plant to fungal and bacterial infection.

Correct levels of plant available phosphorus and calcium are required for normal root growth, nutrient uptake and photosynthesis. When these nutrients are lacking, root growth will be delayed and stunted. Nutrient uptake and plant photosynthesis will also be hindered. These nutrients are essential for plant health and cell wall integrity.

Generally phosphorus acid is not a plant available form of phosphorus but due to our unique microbial digestive process and the form of calcium used – it will convert into available phosphorus for the plant.

Phosphorus is an essential element for flower and fruit formation. Phosphorus is easily locked up in the soil. Microbe Plus PhosCal via foliar spray or soil drench is an efficient method of application during high demand times such as seeding and fruit development.

Calcium regulates the transport of other plant nutrients and is also involved in the activation of certain plant enzymes. It is also essential for plant cell division and is a catalyst for amino acid production. It is a critical element for biological processes in the plant.

All the nutrients in Microbe Plus Phoscal have been microbially digested using Grow Green’s proprietary blend of beneficial soil microbes. This process emulates the natural process found in nature, and converts the nutrients into 100% plant available form.

Active Ingredients

Phosphorus acid, calcium carbonate, magnesium with beneficial soil microbes and bacteria.

Compatibility and Use

Microbe Plus PhosCal can be mixed and applied with most commonly used pesticides and fungicides, however, we strongly recommend checking labels for compatibility and testing in a small area prior to widespread application.

Optimising for results

For optimum results use with Grow Green’s  Profert®, Microbe Plus® Pasture or Microbe Plus® Horticulture, along with Xtend® plant oil adjuvant. Xtend will maximise the result by reducing drift and increasing adherence to the sprayed surface.


Microbe Plus PhosCal is suitable for use in a wide range of market sectors including Pasture, Dairy, Sugar, Broadacre, Horticulture, Viticulture, Turf, Golf Courses, Bowling Greens and Race Courses.

Crop Rate/ha* Number of applications
Horticultural crops 3-4L 3-4 fertigations: pre flowering, post flowering and fruit enlargement stage.
Broadacre Winter crops 2-3L 1-2 foliar applications (booting - grain filling stage)
Broadacre Summer crops 3-4L 2-3 foliar applications: post flowering and grain filling stage
Annual and perennial pasture 3-4L 3-4 foliar applications post grazing

*To be diluted in a minimum of 100L of water per hectare.
We recommend foliar spray to the point of run off.
Pending soil and leaf analysis, application rates may vary. The above should be used as a guide only.
Avoid spraying in high temperature and high UV Conditions.

Shelf Life

Microbe Plus PhosCal should be stored at ambient temperature out of direct sunlight but within a well lit area so that the microbial digestion process within the product continues.


Microbe Plus PhosCal is available in 20L and 1000L containers.

Typical analysis

Nutrient Form Analysis (W/V)
Phosphorus (P) as water soluble 7.00%
Calcium (Ca) as carbonate 4.00%
Magnesium (Mg) as sulphate 0.10%
Copper (Cu) as sulphate 0.025%

For information about specific application rates, or use with specific crops please contact us:
Phone: +61 7 5463 9900 OR 1800 355 913
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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For more information about us or our products:
phone +61 7 5463 9900
Free call 1800 355 913

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6089 Cunningham Highway
Kalbar, Queensland 4309  Australia

Contact an Australian distributor

We have distributors in:
New South Wales
South Australia

Contact our head office for your nearest distributor
phone +61 7 5463 9900
Free call 1800 355 913
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