Slag Aggregate in Agriculture

Tarmac AgSlag is a high quality, calcium rich product providing essential nutrients to soils in a slow release form.

Used as a high quality agricultural fertiliser since the 1920s with outstanding results in providing nutrients to agricultural soils. Maintaining a constant level of phosphate release over long periods, AgSlag only needs to be applied every two to three years depending on the soil pH-value and phosphate response. This saves significant time and cost compared to the annual application of chemical fertilizers whose phosphate levels diminish during the year.

AgSlag Performance

  1. Neutralising value of typically 50% - improving productivity of acidic soil

  2. Provides a release mechanism for soil-locked phosphates

  3. An effective source of hydrated lime

  4. Produces thick, verdant swards on grassland pastures and increases the palatability of grass

  5. Boosts clover growth increasing the quantity of available nitrogen

  6. Improves general well-being of livestock

  7. Suitable for use on organic farms

  8. Safe to handle and easy to spread

  9. Factory conditioned to optimise particle size and reduce windbourne loss

  10. Applied using a conventional spreader therefore avoiding generation of airborne dust

  11. Enhances the permeability of soil leading to improved air and water circulation

  12. The slow release of nutrients enables AgSlag to provide prolonged effective treatment making it unique in its class

A sustainable solution

As a by-product of the steel industry, AgSlag provides a sustainable alternative to other liming materials, providing slow release of nutrients such as phosphates, calcium, manganese and other trace minerals, providing essential nutrients for farming today while managing resources for tomorrow. Along with our entire product range, AgSlag is certified to BES 6001 for responsible sourcing and manufacture.

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