Silage & Hay Inoculant

Si-Lac Hay Forte


Delivering Fresh Growing Bacteria to Your Hay

Robust and reliable, Si-Lac Hay Forte gives hay makers “peace of mind” by enabling baling up to 25% total moisture. Using the unique “Fresh Culture” Si-Lac technology, Si-Lac Hay Forte delivers fresh, actively growing, and fast acting bacteria to your hay. Bale ahead of the rain or go early to achieve higher quality. When you want the best out of your hay, Si-Lac Hay Forte is your first choice.

Si-Lac Hay Forte:

Fresh growing bacteria accelerate the process, speeding pH reduction and consuming oxygen

Suitable for all hay/grass feeding animals (e.g. Cattle, Horse, Sheep, Goats etc.)

Make Hay with up to 25% moisture


  • No animal rejection
  • Greener hay through faster curing and less bleaching
  • Increases in strength - once mixed
  • Long tank mix life: 5 days
  • Low water usage
  • Will not foul tanks and nozzles - can pass 50 mesh screens
  • Use with - small square bales, large squares, and round bales
  • Provides ultimate performance of high moisture hay especially when heating is an issue
  • When premixed at least 12 hours before use, bacteria are applied freshly growing for fast activity, and increase in numbers in the spray tank
  • Vacuum packed in Tri-Layer Foil sachets for long shelf life and to maximise viability of bacteria
  • Does not require continuous refrigeration – store at 20 – 24°C or below


  • Si-Lac Hay Forte is certified for use in organic systems
  • Si-Lac Hay Forte tolerates the higher temperatures in the field for several days
  • Si-Lac Hay Forte reduces heating through reducing pH
  • Si-Lac Hay Forte helps to maintain quality by retaining leaf
  • Si-Lac Hay Forte costs effective, gives great value for money
  • Si-Lac Hay Forte enables earlier baling – helps beat the weather risk

Important Application Guidelines

  • Always read and heed the label
  • For best results, SI-LAC HAY FORTE is applied to hay as it is baled. The inoculant mixture is sprayed from a nozzle mounted in the throat of the baler over the hay after it has been picked up prior to compaction
  • Ensure that applicators are properly calibrated to deliver the correct amount of SI-LAC HAY FORTE per bale and per tonne
  • Ensure that all bales are treated. If untreated hay is baled and stacked with SI-LAC HAY FORTE treated hay, the untreated bales may heat and cause the whole hay-stack to catch fire

Contact Grevillia Ag Today

Get in touch with our knowledgeable, friendly team today.



Grevillia AG

“There must be a better way.” That was the conclusion reached by businessman and farmer John Lever on his cattle property “Grevillia”.


10 Bult Dr,
Brendale QLD 4500

Phone Number

(07) 3205 1788

Customer Service

Australia: 1300 669 556
New Zealand: 0508 473 845