Date Posted:10 April 2025 

Micronised Gypsum – The Premium Liquid Clay Buster Revolutionising Soil Health

In modern agriculture and gardening, the condition of your soil is everything. Healthy soil equals healthy plants – and for many growers, one of the biggest obstacles to that is heavy, compacted clay soils or sandy soils that don’t retain nutrients well. That’s where Micronised Gypsum, often dubbed a “liquid clay buster,” comes in. It’s a powerful, natural solution that delivers calcium and sulfur in a form that’s easy to apply and fast-acting – particularly useful for tackling soil structure problems.

In this post, we’ll explore what makes micronised gypsum such a revolutionary product for Australian growers, home gardeners, and turf managers. We’ll look at how it works, its benefits, how to apply it properly, and answer some common questions – so you can get the most from this premium liquid clay buster.

Key Benefits of Micronised Gypsum

Here’s why this product has gained popularity among a wide range of users – from commercial growers to backyard gardeners:

1. Improves Soil Structure: Gypsum is traditionally used to break up heavy clay soils, improving drainage and aeration. It does this by replacing sodium with calcium on soil particles, encouraging better aggregation and crumb structure. The micronised version does this much faster and more effectively thanks to the tiny particle size.
2. Delivers Essential Nutrients: Micronised gypsum contains Calcim and Sulfur which are delivered in a highly available form, making it ideal for fast uptake:
   • 16.5% Calcium (Ca) – Vital for cell wall development, nutrient transport, and overall plant structure.
   • 13% Sulfur (S) – Crucial for protein synthesis, chlorophyll production, and root development.
3. Convenience & Precision: Applying powdered gypsum can be messy and labour-intensive. Liquid micronised gypsum is easier to apply, whether through fertigation systems, watering cans, boom sprayers, or foliar applications. You also get more precise control over dosage and placement.
4. Clay-Busting Capacity: A single 25L drum of micronised gypsum offers the soil-conditioning power equivalent to 1 tonne of conventional gypsum in terms of immediately available calcium – offering incredible efficiency.
5. Ideal for Diverse Soils: Works as a clay buster in heavy, compacted soils. Acts as a “spoon-feeding” supplement for sandy soils where nutrients easily leach away. Helps balance sodium and magnesium levels in problematic soils.
6. Improves Plant Growth & Yield: By improving soil structure and nutrient uptake, plants can grow stronger roots, access water more effectively, and produce better yields – especially sulfur-hungry crops like canola and root vegetables.

Product Analysis

This combination makes it suitable for soil improvement, nutrient delivery, and crop management across various applications.

How to Apply Micronised Gypsum

One of the major advantages of this product is versatility. Here are the recommended rates across different application types.

For Home Gardens: Dilute 45 mL per 9 L watering can. Apply 1 litre of the diluted mix per square metre. You can pour it over soil or foliage. Repeat every 2–4 weeks as needed.

Foliar Application: Though micronised, this product is best used in systems that can handle larger particles or applied as a drench. Foliar applications work for vegetables, turf, orchards, and more:

• Vegetables: 1L per 100L of water (max 5L/ha), weekly.

• Orchards/Vines: Up to 7L/ha every 2–4 weeks.

• Turf & Ornamentals: Up to 5L/ha every 2–4 weeks.

Soil Amelioration / Fertigation:

• 10 – 50 L/ha, depending on severity.

• Liquid Inject: 2 – 5 L/ha (min 1:3 dilution with water).

Spot Spraying: Mix 50 mL per 10 L water and apply as needed.

Broadacre Crops & Pasture: 1 – 3 L/ha in 60–100 L water, depending on canopy closure and crop stage.

Application Tips

• Shake or stir before use – gypsum settles over time.
• Maintain agitation during application.
• Use a 500-micron inline filter.
• Foliar spray may leave visible residue.
• Avoid spraying near harvest if staining is a concern.
• Store sealed in a cool, dry place.

Product Reviews

⭐⭐⭐⭐⭐ – “Game Changer for My Clay Soil”

“I used to struggle with water pooling and root rot in my veggie patch. After just one application of micronised gypsum, I noticed better drainage and healthier roots. Love that it’s so easy to apply.” – Rachel, SA

⭐⭐⭐⭐⭐ – “Great for Sandy Soil Too!”

“We have sandy loam that struggles to hold nutrients. This product worked wonders paired with compost. Plants are thriving now.” – Tom, QLD

Micronised Gypsum is not just another soil amendment – it’s a highly effective tool for growers looking to optimise soil structure, deliver essential nutrients, and support plant health across diverse conditions. Its fast-acting, easy-to-apply format makes it a standout solution for both commercial and home applications.

Whether you're tackling compacted clay, leached sandy soil, or simply want to give your plants a better environment to thrive in, this premium liquid clay buster is well worth considering.

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