The Calcifert range offers granulated products to the agricultural industry. Calcifert provides essential nutrients to grassland and crops in a format farmers apply using conventional fertiliser spreading equipment.

Calcifert Lime and Mag are approved for Organic farming

Can be self-spread using standard farm fertiliser spreading equipment

Granules between 2mm and 5mm

Ideal for use on all crop types

Calcifert Lime as fertiliser and soil conditioner

Agricultural Events

Calcifert Fertifiliser

Product information

The Calcifert granulated soil conditioner range is made up of Lime, Sulphur, LS11 and Mag. Find out more about the Calcifert product range below.

Agriculture - Ballycastle - Northern Ireland

Calcifert Products

The Calcifert range offers granulated products to the agricultural industry. Calcifert products are suitable for all soil and cropping conditions that require a pH adjustment and Calcium and Sulphur.

Calcifert LimeCalcifert granulated Lime is proven to neutralise soil acidity. Made from fine limestone flour combined with a water-soluble organic binder, Calcifert Lime consists of hard granules between 2mm and 5mm in diameter. Calcifert Lime has many benefits over conventional lime. The biggest benefit is that Calcifert Lime doesn’t need to be applied by specialist contractors – it can be applied using conventional farm fertiliser spreading equipment.Product Analysis: Ca 39.3%, CaO 55%, M <0.5%, MgO <0.5%
Neutralising value (as CaO): 54
Moisture content: <0.5%
Reactivity (HCI): 97%
Calcifert SulphurCalcifert Sulphur is a quick and easy way to supply both calcium and sulphur to your soil. With a typical analysis of calcium as CaO: 39% and sulphur expressed as SO3: 56%, Calcifert Sulphur is one of the purest calcium sulphate products on the market. Calcifert Sulphur has a neutralising value of zero, meaning it won’t affect the pH of your soil.Product Analysis: Ca 27.9%, CaO 39%, S 22.4%, SO3 56%
Neutralising value (as CaO): 1
Moisture content: <0.5%
Calcifert LS11Introducing our latest product of granulated Lime and Calcium Sulphate made to help boost your soil and plant health. An innovative new soil treatment available for the first time to UK farmers aims to balance soil pH and supply essential Calcium and Sulphur to soils in one easy, cost-effective application. Calcifert LS11 both neutralises soil to maintain a balanced pH and contains 11% SO3 to help address the widespread sulphur deficiency on UK farmland.Product Analysis: Ca 37%, CaO 52%, S 4.5%, SO3 11%
Neutralising value (as CaO): 44
Moisture content: <0.5%
Reactivity (HCI): 99%
Calcifert Mag*This product is currently out of stock*

Calcifert Mag is a granulated dolomitic limestone manufactured in the UK and contains 19% magnesium as MgO, and is ideal for magnesium-deficient soils with a pH imbalance.
Product Analysis: Ca 21.5%, CaO 30%, Mg 11.5%, MgO 19%
Neutralising value (as CaO): 56
Moisture content: <0.5%
Reactivity (HCI): 29%
Importance of Sulphur

Importance of Sulphur

Following a dramatic reduction in atmospheric deposits, up to 85% of arable and 88% of grassland is deficient in sulphur. Sulphur is an essential nutrient required for the healthy development of all plants and vital to efficient nitrogen utilisation.

Calcifert Fertilisers and Soil Conditioners

Product Information

The Calcifert granulated soil conditioner range offers some great benefits to all crop types and farm use. Discover the benefits below.

Product benefits

The Calcifert granulated soil conditioner range offers a great range of benefits, including:

  • Can be applied using standard spreading equipment
  • Produced in the UK
  • Suitable for use on all farms, including organic systems (Calcifert Lime and Mag), forestry, and horticultural use
  • Ideal for all crops, including grassland, cereals, fruit & vegetables, oilseed rape, and hops

Packaging Calcifert

Calcifert granulated products are available in:

  • Standard 600 kg bags

Spreader settings and application recommendation

You can apply our Calcifert products via a conventional fertiliser spreader. Independent tests have shown that Calcifert granulated products can be accurately spread up to 36-metre bout widths.

Spreader setting results

Trials with a range of leading fertiliser spreaders have shown that Calcifert granulated products spread to 36 metres and have a Coefficient of Variance of less than 10%.  We have tested the following:

  • Amazone ZA-M
  • Kuhn Axis
  • Accord HL
  • KRM Ex trend
  • KRM M35
  • Teagle Centerliner SX
Application of Calcifert Lime

Calcifert Application Recommendations

We have guidelines for the recommended application of Calcifert Lime for different soils and field pH available. Details can be found in the lime application recommendations sheet below.

Close up blossom colza - Calcifert Nutrient Information

Nutrient Information

See below to find out more about Calcium and Sulphur deficiency, Magnesium excess and efficient Nitrogen generation.

Calcium deficiency

Calcium deficiency regularly occurs in acidic soils where natural Calcium has been leached. It is also evident in soils where high rates of slurry and fertiliser Nitrogen have been used. That is because these can have an acidifying action on the soils, which lowers Calcium levels. Supplying crop available Calcium with Calcifert Sulphur benefits crop health and cell strength. It helps to reduce its susceptibility to cell degradation and disease.

Sulphur deficiency

Sulphur deficiency is common in crops where high rates of Nitrogen have not been balanced with adequate Sulphur. Due to atmosphere cleaning by reducing Sulphur emissions from industry and vehicles, there has been a 75% reduction in deposition to land. Therefore Sulphur deficiency has become very common, affecting crop quality and nitrogen use efficiency. Supplying crop available Sulphate with Calcifert Sulphur helps rebalance the requirement during the growing season. As a result, this will improve yield and crop quality.

Magnesium excess

It is possible to move this excess Magnesium cation out of the soil by using higher rates of Calcifert Sulphur. We advise you to do this:

  • Where soils have very high Magnesium levels
  • Are hard to cultivate
  • Tend to hold water with a sticky texture

Calcium helps to restructure the soil by improving the flocculation and reducing the dominance of Magnesium.

Efficient nitrogen generation

Sulphur is key to efficient nitrogen generation. It is, therefore, essential that farmers get the most from the input they apply, especially with ever-increasing fertiliser prices. Calcifert Sulphur is a quick and easy way to supply both calcium and sulphur to the soil and crop.

Where to Buy

Our range of Calcifert products is ordinarily purchased through one of our trusted distributors, please fill in the contact form below and a member of the team will be in contact.

Find out about our distributors or speak with a technical specialist

Get in touch

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Calcifert Documentation

Industry use

Our customers use industrial minerals to improve constructions, increase safety and reduce costs.

Frequently asked questions

Here are the most common questions and answers for this product.

Nitrogen-based fertilisers are applied in the spring and summer (Late Feb – August). The rate will depend on the crop being grown. Phosphate and Potash are used in autumn and spring, depending on the cropping requirements. Sulphur is best applied in the spring.

A soil conditioner restores the balance of the major cations, particularly calcium & magnesium. This correction of the chemical balance within the soil promotes a physically well-structured soil with good flocculation that encourages the correct aerobic biology in the soil.

Calcifert Lime application rates are lower than conventional lime making it a cost-effective alternative. How much you apply will depend on your soil type, acid levels, and crop.

For Calcifert Sulphur, this will depend on the crops Nitrogen requirement and is where you should use FACTS qualified advice. Some examples would be 175 kg/ha Winter Wheat and grass silage three cuts.

Please contact us for more guidance on specific rates or view our application rates chart.

Calcifert products should be stored under cover in a dry place. For guidance on the secure storage of Calcifert granulated soil conditioners, please visit the data centre.

Calcifert Lime can be applied all year round. Applying Calcifert Lime before wet weather will increase the speed at which is reacts with the soil.

Animals can be put back to graze on treated land immediately. Calcifert Lime is not harmful to animals.

Calcifert granulated products are sold through merchants and distributors across the UK and Ireland. Please contact your local stockist for more information on pricing.

You only need to apply this once in the spring.

For Calcifert Sulphur, after applying the granules, your soil only requires straight Nitrogen fertiliser.

Yes, it will move the excess Mg from the soil, replacing it with Calcium and increasing flocculation, ultimately making the soil operate more aerobically.

The crop available Calcium will be taken up by the plant, reducing these conditions because Calcium will better supply the cell structure.

All soils require Magnesium when balancing the soil’s nutrients. However, once a heavier clay soil has the correct level, it is less likely that it will need Mag Lime. Sandy soils do not hold on to nutrients as strongly and require regular amounts of all including Magnesium. These soils are therefore more likely to request this product.

Ensure a broad-spectrum soil analysis is carried out so that the balance between Calcium and Magnesium can be worked out.

Calcifert Sulphur has a neutralising value of zero, meaning it won’t affect the pH of your soil.

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