Medicago sativa
AFX 457
Fall Dormancy: 4.0
Winter Survival: 2.0
Disease Rating Index: 30/30
StandFast FastGrowth Rating: 1.84
AFX 457 Hi-Salt Alfalfa is designed for high yield, persistence, and superior forage quality in fields with high salinity (EC) or irrigated with high EC water. This variety is well-adapted to the Great Plains and Intermountain West, particularly where salinity restricts the production of dairy-quality hay. It features aggressive seedling growth for quick establishment, even in saline soils, without sacrificing yield in non-saline conditions.
Key features
- Hi-Salt
- High yield potential
- Adapted to all areas of the Great Plains and Intermountain West where salinity limits hay production
- No yield drag when planted into non-saline soils
- Suitable for fall dormancy 3, 4 or 5 areas
| % Resistant Plants | Resistance Class | Class Abbreviation |
|---|---|---|
| > 50 % | High Resistance | HR |
| 31 – 50 % | Resistant | R |
| 15 – 30 % | Moderate Resistance | MR |
| 6 – 14 % | Low Resistance | LR |
| < 5 % | Susceptible | S |
StandFast FastGrowth ratings are calculated from weekly measurements of varieties grown side‑by‑side from green‑up to harvest through the growing season. Expressed as average centimeters of growth per day.
| Average cm / day | Growth Rating |
|---|---|
| > 2.20 | Very Fast |
| > 2.00 | Fast |
| > 1.80 | Average |
| > 1.60 | Slow |
| < 1.60 | Very Slow |