Alfalfa Variety
4A420
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Traits and Technology

Not applicable

Separate Refuge Requirements

Not applicable

Overview

  • A widely adapted alfalfa with harvest flexibility.
  • A strong multiple-pest resistance package, including Aphanomyces Race 2, for medium to long crop rotation.
  • Nematode resistance for western growers.
Management Guidelines

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Product Ratings
7-9 Good 4-6 Fair 1-3 Poor
Management Traits
Cuttings Per Season3 or >
Fall Dormancy
4
Forage Quality
7
Forage Yield
8
Maturity to Early Flower
6
Multifoliate Leaf ExpressionLow MF
Recovery After Harvest
8
Winterhardiness1.6
Disease Traits
AnthracnoseHighly Resistant
Aphanomyces Race 1Highly Resistant
Aphanomyces Race 2Resistant
Bacterial WiltHighly Resistant
Disease Index34
Fusarium WiltHighly Resistant
Phytophthora Root RotHighly Resistant
Verticillium WiltHighly Resistant
Insect Traits
Northern Root Knot NematodeHighly Resistant
Pea AphidResistant
Spotted Alfalfa AphidNot Available
Stem NematodeResistant

Management Guidelines

  • Adapted to production areas where alfalfas with fall dormancy of 3, 4 or 5 are normally recommended and when traditional cutting schedules are utilized.
  • Performs well in grass-legume mixture across the northern United States and on western soils with nematode pressure; no known soil type or management limitations.
  • Average days to harvest maturity and holds forage quality to midflower maturity.
  • At harvest maturity look for medium-tall plant height, leafy canopy and medium green trifoliate leaves.
  • Quick greenup after harvest.
  • Features a strong multiple-pest resistance and nematode package for medium to long crop rotations.