Download a copy of the Impact 2 NEA2 factsheet.
Impact 2 is a late maturing, diploid perennial ryegrass, providing an exceptional even seasonal growth pattern throughout the year. Combined with NEA2 endophyte, Impact 2 offers good inset protection and performance with it being the highest rated late heading diploid in Dairy Australia’s Forage Value Index1 delivering greater economic returns in dairy systems in SE Australia.
- Late heading diploid perennial ryegrass (+ 16 days Nui)
- Consistent seasonal growth pattern across all seasons
- Excellent early spring yield for a late heading variety
- Impact 2 NEA2 is the highest rated late diploid perennial ryegrass in the Dairy Australia FVI1 (2020 dataset) for Gippsland, South West Victoria, Northern Victoria and Tasmania
- Strong annual forage production only superseded in the diploid perennial ryegrass space by our new cultivar Maxsyn NEA4
- The high annual forage production combined with consistent seasonal growth curves assist in delivering reduced overall feed costs for dairy farms. This is evident in the Dairy Australia Forage Value Index (FVI) which is a measure of the economic value a cultivar provides to dairy systems in Tasmania, South West Victoria, Gippsland & Northern Victoria.
- The early spring growth, combined with Impact 2 NEA2’s late heading, make it a great performer in many systems where early spring growth is critical, but you require a late heading variety that will deliver late spring quality & animal performance.
- The improved seasonal growth curves produce feed outside of normal growth periods, such as mid-late spring, helping fill feed gaps in autumn to early spring. This reduces the cost of supplementary feed by producing cheaper ‘home grown’ forage.
It is suited to both dairy and intensive red meat systems, in regions typically suited to perennial ryegrass, where consistent and reliable forage production is required throughout the year. Impact 2 NEA2 is best suited to rainfall greater than 700mm/yr.+ in warmer temperate regions, while in cooler temperate regions like Tasmania & South Gippsland, Impact 2 will perform well down to 600mm/yr.+. The growth of Impact 2, in key periods like winter & early spring assist most farming systems in southern Australia by reducing supplementary feed costs, therefore providing an excellent option for farmers wanting to fill feed deficits in this period, but wanting a late heading variety that will maintain quality and production in late spring. Impact 2 NEA2 is well suited to sowing in combination with late heading tetraploid cultivars like Bealey NEA2. The combination of Impact 2’s tiller density helps to avoid overgrazing in the high quality Bealey NEA2 making them a great combination.
Agronomy and management
Sow March – June or August/September (reliable areas)
* Higher sowing rates will increase establishment yield but have little benefits to yield post early spring in the first year. In most situations higher sowing rates lead to economic returns.
- Graze young plants lightly, once they resist pulling, usually 6–10 weeks after sowing (depending on sowing time & soil temperature). This causes plants to re-tiller & aids first year production.
- Re-graze on leaf stage, aiming at 2 ½ – 3.0 leaves per tiller.
- Ensure daughter tiller development in late spring/early summer to aid summer persistence and maintain critical ground covers and rotation length (c. >35–45 days in hot summer regions).
- Maintain critical soil nutrient concentrations for production & persistence.
- Consider sowing Maxsyn NEA4 with Storm AgriCote white clover (3–5 kg/ha) to provide a nitrogen source & late season/summer quality in paddocks where N fertiliser use is < 200 kg N/ha/yr.
Impact 2 provides leading metabolisable energy (ME) throughout spring, due to low aftermath heading and late maturity resulting in improved silage quality and animal performance.
Impact 2, while being late heading, has consistent and reliable strong early spring production, helping fill feed gaps coming out of winter.
The total seasonal forage production of Impact 2 NEA2, performs better than other leading mid & late diploid perennial ryegrass cultivars, only superseded by our new cv. Maxsyn NEA4
1 (June 2020) https://www.dairyaustralia.com.au/farm/feedbase-and-animal-nutrition/pasture/forage-value-index Plant Breeders Rights
(PBR): This variety is registered under Plant Breeders Rights (PBR) in Australia. Unauthorised commercial propagation or any sale, conditioning, export, import or stocking of propagating material is an infringement under the Plant Breeders Rights Act (1994). Any breach of this legislation will leave the grower liable for prosecution.
Disclaimer: The information presented in this brochure is from official and other sources and is considered to be reliable. It is provided in good faith and every care has been taken to ensure its accuracy. Barenbrug does not accept any responsibility for the consequences that may arise from the acceptance of recommendations or the suggestions made.