ALFALFA CHARACTERISTICS WSI FD Viking 372HD Brand*
2
4
DRI
Traffic Tol. Aphanomyces
Phyto. Vertic. Root Root Stem Rot Rot Nematode
30/30
HR Race1
HR
HR
R
4.5 35/35
HR Race1 HR Race 2 HR Race 3
HR
HR
R MR
Viking 392AP Brand*
1.9
Viking 342LH Brand*
1.9
4
30/30
HR Race 1
HR
HR
Viking 330M Brand*
2.2
4
29/30
HR Race 1
HR
HR
Viking 3100 Brand*
2.4
3
28/30
R Race 1
HR
HR
Hi-Gest® 360
1.5
3
30/30
HR Race 1
HR
HR
WL 349HQ NEW
1.7
4.4 45/45
X
HR Race1 HR Race 2 HR Race 3
HR
HR
2
4.1 30/30
X
HR Race 1
HR
HR
1.9
3.5 33/35
X
HR Race1 R Race 2
HR
R
2
2.5 25/30
X
R Race 1
MR
MR
Honest John
2.5
3.5 29/30
HR Race 1
HR
HR
Vernal
2.2
2
11/30
Nitrogen Brand*
NA
9
ID
WL 358LH ForeGrazer V Matrix Creeping
x
R
S R Race 1
R
* Variety not stated
Winter Survival Index (WSI)—A standardized test that measures the ability of alfalfa varieties to withstand severe winters. Varieties are rated from 1 (superior) to 4 (adequate). If a variety does not have a WSI rating, you can use the Fall Dormancy as a guide. The most persistent alfalfas are those with low WSIs and good pest and disease resistance. Fall Dormancy (FD)—The measure of how tall an alfalfa plant grows after the last cutting and before going dormant for the season. An alfalfa with a lower number goes dormant earlier in the fall. D isease Resistance Index (DRI)— 30 = highest, 6 = lowest
26 • Viking Corn & Soybeans Catalog
Disease & Pest Resistance—Poorly drained fields require alfalfas with better disease resistance (especially Phytophthora and Aphanomyces). Select varieties with superior disease resistance to ensure a long, productive stand. Resistance HR = Highly Resistant R = Resistant MR = Moderately Resistant LR = Low Resistance S = Susceptible Forage Quality—Varieties with a high Relative Feed Quality (RFQ) are designated with either HQ or HD (WL 349HQ & Viking 372HD).
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