When to sow
Grows at temperatures as low as 6°C so the farm must be able to make use of this early growth.
When to cut
Up to four cuts per year which can take place in May, July, August and October.
This is the ultimate silage mixture, yielding up to 20t DM/ha in its first year and exceeding 16t DM/ha in its second year.
Grass crops can be grown specifically for biogas production in anaerobic digestion (AD), for stabilising or supplementing other feed stocks such as low yielding slurries or variable quality food waste. Grass crops can be incorporated effectively into existing crop rotations and won’t impact on food production as they can be grown on lower fertility soils and on land which is not suitable for the production of food crops. Grass gives long term benefits of improved soil health, structure and fertility, particularly in the arable rotation. It can also aid in the control of black grass by reducing heading and therefore seed shed by taking multiple cuts.
- Grass silage yields around 160-200 M3/tonne of biogas at 28% DM
- Excellent addition to other feed stocks
- Enables efficient utilisation of digestate
- Lower environmental impact
- Ability to sequester carbon into the root matrix
- Improves soil health and structure
- Reduced soil erosion and nutrient leaching
- Lower production costs