Trucal

Trucal

Trucal is a granular limestone containing 99% calcium carbonate. Trucal can be used to adjust soil pH to improve nutrient availability and soil structure. Trucal can be applied throughout the year at a total rate of 0.5-8 kg/m² (maximum 0.1-1 kg/m² per application).

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Trucal

Trucal granular limestone has been carefully crushed and screened to produce a consistent and finely granulated product with excellent spreading ability and efficacy.

Overtime the acidity of soils can increase due to both natural and management processes. For example, the acidifying effects of rainfall and the use of fertilisers. As soil acidity increases, plant health can suffer as nutrients become less available. To counter this effect, Trucal is able to naturally neutralise soil acidity by reducing the amount of acidifying free hydrogen ions.

Trucal has a high neutralising value of 55.6% and a fine granulation meaning that it will get working to neutralise soil acidity faster than more coarsely ground liming products.

Product summary table

Granule size (mm) Cutting height Bag size (kg) Trucal requirement (kg/m²) Bag coverage (m²)
0.6 - 1.2 All turf including fine turf 25 0.5 - 8 250 - 12.5

Application recommendations

Where to use:

  • Managed amenity turf:Areas of frequently mown intensively managed turf, including:
    • Fields being used for turf production
    • All types of sports turf
    • Ornamental turf
  • Amenity vegetation: Any areas of semi natural or ornamental vegetation, including trees
  • Ornamental garden plants: Any plants that are not intend for consumption, including plants grown in private gardens
  • Edible crops: Any plants that are intended for consumption

When to use:

Trucal should ideally be incorporated into the soil up to six months prior to seeding to give time for the neutralisation process to occur. On established turfgrass and borders, Trucal can be applied at any time of the year but is most effective when applied in the autumn.

Usage calendar
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

How to use:

  • Use a laboratory recommended liming requirement, or estimate the amount of Trucal needed by using the table below as a guide.
Guide to Trucal requirement* to raise soil pH to 6.5
Starting pH Sandy - Silt loams Clay loams & clay Organic soils (<25% OM) Peaty soils (>25% OM)
Kg/m² t/ha Kg/m² t/ha Kg/m² t/ha Kg/m² t/ha
pH 4.5 5.8 58 7.2 72 6.5 65 4.3 43
pH 5.0 2.8 28 3.2 32 2.8 28 1.6 16
pH 5.5 0.6 6 0.7 7 0.4 4 - -

  • Trucal requirement depends on the current and target pH as well as the soil type
  • *Individual applications should be limited to:
    • 0.12 kg/m² for turf heights < 8 mm
    • 0.50 kg/m² for turf heights > 8 mm; and areas where soil incorporation is not possible
    • 1.00 kg/m² for all other areas
  • Apply annually or biannually until the requirement is met
  • For larger areas use a broadcast spreader to help to achieve even application of Trucal
  • On non-turfed areas or prior to seeding, incorporate Trucal into the top 15-20 cm of soil
  • On established turf and borders broadcast onto a dry surface
    • If no rain is forecast, irrigate with 25 mm water to wash the Trucal off the plants and into the soil


For advice or further information on Trucal, speak to a technical sales advisor on +44 (0)1902 440250.

Delivery charge (if applicable) applied at checkout. Next working day delivery is available on this product, as an option on orders placed before 12 noon - excludes festive season & bank holidays. Please note deliveries to Highlands, Cornwall and more remote areas may take longer. Surcharges apply for non mainland locations, call for more information. More delivery info

For large orders, please be aware that if you require a smaller 7.5 tonne lorry, the maximum weight for pallets is 750 kg - otherwise the standard pallet size limit of 1000 kg applies.

If you have any access restrictions for lorries or large vehicles please speak to our sales team on +44 (0)1902 440250.


Collection from our Telford, Shropshire, Trade Counter is available for this product. More info on collections