Variety Overview
End-use group: Hard Group 4
Market options: Livestock feed
Soil preference: Suitable for all soil types
Regional positioning: Performs well in all regions, particularly the West
Parentage: Premio x Expert
Key features: GRAHAM is a high yielding hard feed variety with a very strong overall disease profile, providing excellent resistance to both Yellow rust and Septoria tritici. GRAHAM is also an early maturing variety; its agronomic and disease profile makes it a perfect variety to help you manage your risk.
Key Performance Statistics
We've compared a few varieties on the AHDB Recommended List 2022/23 and shared some key statistics we think you'll be interested in. Download the variety sheet for some more in depth information you can carry with you everywhere.
Agronomic features
Resistance to lodging without PGR (1-9) | Resistance to lodging with PGR (1-9) | Straw height without PGR (cm) | Ripening (days +/- Skyfall) | |
|---|---|---|---|---|
GRAHAM | 7 | 8 | 88 | -1 |
KWS Extase | 7 | 8 | 90 | -1 |
Costello | 8 | 8 | 83 | +2 |
Yield
Untreated Yield* | Treated Yield* | Eastern Yield* | Western Yield* | Northern Yield* | |
|---|---|---|---|---|---|
GRAHAM | 88 | 101.7 | 100 | 104 | 102 |
KWS Extase | 93 | 100.7 | 100 | 102 | 99 |
Costello | 81 | 99.7 | 99 | 100 | 100 |
* % treated control
Grain quality
Endosperm texture | Protein content (%) | Hagberg Falling Numer | Specific Weight (kg/hl) | |
|---|---|---|---|---|
GRAHAM | Hard | 11.3 | 275 | 76.9 |
KWS Extase | Hard | 11.9 | 289 | 78.5 |
Costello | Hard | 11.8 | 322 | 80.6 |
Disease profile
Mildew (1-9) | Yellow rust (1-9) | Brown rust (1-9) | Septoria tritici 3 year (1-9) | Eyespot (1-9) | Fusarium | OWBM Resistance | |
|---|---|---|---|---|---|---|---|
GRAHAM | 7 | 7 | 5 | 6.7 | 3 | 7 | - |
KWS Extase | 7 | 8 | 7 | 7.8 | 3 | 6 | - |
Costello | 8 | 9 | 5 | 5.8 | 4 | 6 | - |
Source: AHDB Recommended List 2022/23
Breeding Insight
GRAHAM is a firm favourite and would be one of the first varieties on my list. With proven on-farm performance and an excellent disease profile which gives that extra flexibility when application timings are compromised, GRAHAM is a difficult variety to beat.
Matt Bull
Agronomy Insights
GRAHAM has all the right attributes for early drilling this autumn and has been proven to be a reliable option in the early drilled slot for several years.
GRAHAM has the ideal growth habit for those growers looking to drill early this autumn. The variety has slow over-winter development and a prostrate habit. It is relatively slow to hit stem extension which helps protect the developing ear from late frosts.
Equally important is the agronomic profile. GRAHAM has excellent resistance to primary diseases Yellow rust (8) and Septoria tritici (6.8) which are naturally a higher risk associated with early drilling. GRAHAM also has good straw strength which is critical for early drilling where lodging risk is increased.
Ideal growth habit and stiff straw
- Prostrate growth habit with good ground cover over winter
- Slow over winter development
- Quickly moves through GS30-39, resulting in very early maturity (0)
A field of GRAHAM
