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Medicago sativa

AFX 439

AFX 439

Fall Dormancy: 4.0
Winter Survival: 1.5
Disease Rating Index: 34/35
StandFast FastGrowth Rating: 2.01
AFX 439 Hi-Ton Alfalfa a versatile variety engineered to maximize yield and quality under aggressive management practices.  Known for its high yield performance, AFX 439 excels in longer rotations. When managed intensively for dairy feed, it provides high-quality forage and boasts a rapid green-up rate after harvest. 

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Alforex Seeds by DLF

Alforex Seeds by DLF™ offers a leading alfalfa lineup for North America, featuring elite genetics and technologies. Known for high yield and nutritional value, it supports greater productivity with advanced breeding and rigorous quality testing.
Hi-Ton®

Hi-Ton® alfalfa varieties offer high yield, disease resistance, and pest resistance for growers who want to push their alfalfa acres to maximize seasonal dry matter. These varieties ensure faster growth and recovery after harvest by accelerating green-up by 3 to 5 days, leading to more cuts per season and increased yield potential.

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Key features

  • Widely adapted variety
  • Maximized forage yield under aggressive management
  • Excellent yield performance when longer rotations are desired
  • Performs very well when planted in mixtures with grasses and other legumes

General Characteristics
Segment Forage
Species Alfalfa
Sci. Name Medicago sativa
Plant Characteristics
Stem Thickness Medium
Multifoliate (MF) Leaf Expression Frequency Moderate - 68%
Cutting System 3-5
Emergence (Days) 7
Root Characteristics
Root Type Tap
Seeding Information
Approx. Seeds/Lb. 227000
Seeding Rate - Alone/New (Lbs./Acre) 18-25
Seeding Rate - Mixes (Lbs./Acre) 15-20
Pest and Disease Resistance
Bacterial Wilt Highly Resistant
Fusarium Wilt Highly Resistant
Verticillium Wilt Highly Resistant
Anthracnose (Race 1) Highly Resistant
Anthracnose (Race 5) Not Tested
Phytopthora Root Rot Highly Resistant
Aphanomyces Root Rot (Race 1) Highly Resistant
Aphanomyces Root Rot (Race 2) Resistant
Aphanomyces Root Rot (Enhanced) Not Tested
Pea Aphid Resistant
Blue Alfalfa Aphid Resistant
Cowpea Aphid Highly Resistant
Spotted Alfalfa Aphid Highly Resistant
Potato Leafhopper Not Tested
Stem Nematode Resistant
Northern Root Knot Nematode Not Tested

 

% 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