Selenisilage is a well balanced NPKS fertiliser with added Selenium, which is an essential trace element for animals. Its special formulation provides an option for farmers to apply NPKS and Selenium to silage swards

For dairy, sheep and beef farmers

Who are looking to improve animal performance by raising blood selenium levels within their livestock

Our product is a well balanced silage NPK fertiliser with added Selenium

Better than other methods of selenium supplementation which are less cost-effective

Our solution boosts selenium levels in the soil, forage and the animal's blood

It is tried, tested and proven in Ireland


What is Selenisilage?

Selenisilage is a special formulation providing an option for farmers to apply NPKS and selenium to grazing and silage swards.

Why use Selenisilage?

Selenium is a vital trace element and is required by all animals. The natural route for selenium intake by ruminant animals is from their green feed diet. The selenium in Selenisilage is a slow release granular form of selenium, which is the natural solution to boost low plant selenium levels. Selenium is released throughout the plant growing cycle boosting the selenium content at harvest or during grazing.

  • Selenium is essential for animal health
  • Selenium deficiency is linked to infertility, retained placentas, ill thrift and a wide range of sub-clinical symptoms
  • 90% of UK soils are deficient in Selenium
  • Irish pastures supply only 38% of the selenium requirements of an average lactating cow (TEAGASC 2013)
  • On average, the cow's complete diet provided only 58% of her requirement for selenium (TEAGASC 2013)
  • Trials in Ireland and the UK have proved that the Selenisilage can elevate and sustain Selenium levels in pasture, forage and animal bloods for optimal health and performance

Why treat the soil with Selenisilage instead of treating the animal?

Treat the SoilTreat the Animal
Works and...Works but...
Effect is long-termEffect is short-term
Selenium stays on farmSelenium leaves farm in animals
No animal handlingInvolves stressful handling
Selenium applied in fert - simpleRelies on animal husbandry
No extra time involvedtime consuming for farmer

The SELENI range are grassland fertilisers enriched with granular selenium (Se) N %P2O5%K2O %SO3 %MgO %Se %


Assessing the effect of selenium fertiliser on herbage Se levels in grass



Selenium trial in Kilkenny



Selenium trial in Cork

Application rate
GrazingApplying a minimum of 4 bags/acre/yr of Selenigraze over the grazing season will help to correct your selenium deficiency.
SilageSelenigraze is suitable for both first and second cut silage. Selenigraze helps to raise the selenium content of silage. Apply 3-4 bags/acre as required.
Need a Carbon Footprint?

Our aim is to provide specific carbon footprints for our products, improving accuracy for recording and reporting. NUTRI-CO2OL, our independently ADAS verified carbon footprint model, was developed to account for changes in raw material sourcing, production and blending sites.

An indicative carbon footprint for Selenigrass is below. Contact us quoting the bag code on your bag tie for an accurate carbon footprint.