a brand of



Dormancy 4 Alfalfa

Download Brochure

SW4515 is a FD4 variety with high yield potential and high resistance to stem nematode. This alfalfa variety has excellent overall disease resistance, plus high resistance to stem nematode for the northwest.

Key Advantages

  • Highly resistant to seven major alfalfa pests and diseases
  • Resistant to spotted aphid and pea aphids
  • Good resistance to lodging, similar to SW5909 for lodging resistance
  • Broad-based parentage includes germplasm from lodging resistant breeding lines
  • High resistance to stem nematode for the northwest, especially surface irrigated fields
  • Solid agronomic characteristics, good overall disease resistance, plus very good winter-hardiness

Major Pest Resistance

  • Anthracnose – Highly Resistant
  • Phytopthora Root Rot – Highly Resistant
  • Aphanomyces (race 1) – Highly Resistant
  • Aphanomyces (race 2) – Highly Resistant
  • Bacterial Wilt – Highly Resistant
  • Verticillium Wilt – Highly Resistant
  • Fusarium Wilt – Highly Resistant
  • Stem Nematode – Highly Resistant
  • Pea Aphid – Resistant
  • Spotted Aphid – Resistant

(Pest Resistance Rating Scale: Highly Resistant, Resistant, Moderately Resistant, Low Resistance, Susceptible)

Agronomic Traits

  • DRI Score – 35/35
  • Fall Dormancy – 4
  • Winter Hardiness – Very Hardy

(Winter Hardiness Rating Scale: Extremely Hardy, Very Hardy, Hardy, Semi-dormant, Non-dormant)

Where to Buy

We sell our products to more than 35 countries around the world. Our team of agronomists can help you find the variety best suited to your growing environment.