Plant Doctor Micronised Gypsum Liquid - Organic Certified [size: 1Litre]

Premium clay buster with Fulvic acid

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The introduction of the “clay buster” in liquid form allows ease of application and more precision in placement.

A high-analysis source of micronised natural gypsum combined in a free-flowing suspension with fulvic acid. The soil conditioning capacity of gypsum is dramatically magnified with the huge increase in surface area associated with micronisation.


  • Australian Certified Organic (ACO) Registered Farm Input 456AI (Restricted).
  • More convenient and easier to apply than conventional gypsum.
  • A “fast food” source of calcium and sulfur.
  • 25 L is equivalent to 1 tonne of gypsum (in terms of immediately available calcium).
  • The tiny particle size ensures improved coverage and amplifies the soil conditioning and clay-busting capacity of gypsum.
  • A sulfur-based protein builder for cereal crops and pasture.
  • Ideal for growers seeking a natural source of calcium and sulfur.
  • An efficient midseason supplement for sulfur-hungry crops like canola and root crops.
  • A “spoon-feeding” option for light, sandy soils with poor retention of both calcium and sulfur.
  • Useful in the management of high magnesium and sodium in the root zone.



Soil Ameliorant or Fertigation:

10 – 50 L/ha as required. Use higher rate for soil amelioration


Foliar Spray:


1 L per 100 L water up to 5 L/ha equivalent. Apply weekly or as required

Orchards & Vineyards

1 L per 100 L water up to 7 L/ha equivalent. Apply every 2 – 4 weeks or as required

Ornamentals & Turf

1 L per 100 L water up to 5 L/ha equivalent. Apply every 2 – 4 weeks or as required

Broadacre Crops

1 – 3 L/ha in 60 – 100 L water, depending on canopy closure. Apply as required


1 – 3 L/ha in 60 – 100 L water, apply as required


50 mL per 10 L water, apply as required


Liquid Inject:

2 – 5 L/ha

Use a minimum dilution rate of 1-part product to 3-parts water. Rate will depend on crop, row spacing &

soil type. Always consider N & P crop requirements for starters based on reliable soil test data.


Home Garden Application:

Dilute 45 mL per 9 L watering can and apply the diluted mix at a rate of 1 litre per square metre – this

diluted mix can also be poured over foliage. Repeat every 2 – 4 weeks or as required



Calcium (Ca) (as sulfate) 19.55%

Sulfur (S) 15.31%

SG 1.5

pH 8.2 – 9.2

Conductivity 1 – 5 mS/cm

Appearance Thick, off-white/cream colour liquid, citrus odour




Shake or stir well before use & maintain constant agitation.

It is advisable to pre-mix, adding this product slowly while maintaining agitation in spray tank to

prevent settling of solids. Will pass through 200-micron filter under ideal conditions, however, a coarse inline filter (500 microns/35 mesh) is recommended to ensure the delivery lines are free from particle contaminants from other sources. Where higher water rates are required for good foliar coverage, do not exceed maximum product rate per hectare. MMS products will leave a visible residue on leaves and fruit when used as a foliar. Avoid spraying close to harvest if produce

is susceptible to staining. Sensitive foliage or plants should be test sprayed prior to full scale application. Frequencies are a guideline only and can be adjusted according to farm practices and/or in conjunction with crop monitoring. Ensure suitable spray conditions (e.g. temperature, humidity, wind-speed), prior to foliar application. Compatibility and/or performance cannot be guaranteed when combined with other products. Jar test for compatibility and spray test on small area before wide-spread use.



Store in a cool dry area out of direct sunlight. This product has been tested to store safely down to 5ºC. Sedimentation may occur below 5ºC. Do not pre-mix or store in diluted form. MMS products are very heavy and every care should be taken when handling these materials to avoid back injury.


Clay be gone!

By: on 10 November 2019
Prior my Reno I was struggling with hydrophobic clay soil. This is along with natures soil has my soil happy and moist!


By: on 20 September 2019
Much better and easier to use than solid phase gypsum. Definitely sorted out the clay on my lawn. Great value!

Cheaper and easier than powdered gypsum!

By: on 4 September 2019
Cheaper and easier than powdered gypsum, just spray it on - no dust clouds!

Liquid Gold

By: on 23 May 2019
Upon laying my turf down on a clay base I quickly realised even with some organic soil that my lawn was struggling in the summer heat. I applied this post coring and the difference was outstanding, My hydrophobic soil when applied with this and the soil wetter made a remarkable recovery!! shame I cant post before and afters. brilliant stuff

So much better than the competition

By: on 23 February 2019
Best product to break up clay soil! Used another brand 4 times didnt help much, thought I was going t ok nave to rip up my turf and start again. Try this one, yes you heard that right once, and seen visable differnt in afew day, and new grass shoot with i the week, sucha good product!

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