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Table 4.  1997-1999 alfalfa variety yields at the Agronomy Research Center, West Lafayette , IN  Seeding date:  April 23, 1997

Dry Matter Yield (T/A)

1997 1998 1999 97-99

% of Check

Entry total total total total 97-98 97-99
GEM 3.28 * 7.36 * 7.77 * 18.41 * 133 124
DK140 3.21 * 7.53 * 7.43 * 18.17 * 134 122
Choice 2.98 * 7.12 * 7.78 * 17.88 * 126 120
Demand 2.96 * 7.01 * 7.84 * 17.81 * 124 120
5454 2.89 * 7.15 * 7.74 * 17.78 * 125 120
631 3.06 * 6.79 7.76 * 17.61 * 123 119
5312 3.02 * 6.83 7.74 * 17.59 * 123 118
DK141 3.02 * 6.86 7.59 * 17.47 * 123 118
2888 3.00 * 6.92 7.53 * 17.45 * 124 118
WH 80 2.87 6.80 7.65 * 17.32 * 120 117
Complete 2.93 * 7.03 * 7.26 17.22 124 116
Ace 3.05 * 6.99 * 7.13 17.17 125 116
Spur 2.70 6.97 * 7.33 17.00 120 114
Rushmore 2.78 6.90 7.30 16.98 121 114
DK127 2.63 6.86 7.39 * 16.88 118 114
Safeguard 2.55 6.51 7.20 16.26 113 109
Vernal 2.53 5.50 6.82 14.85 100 100

Grand mean 2.91 6.89 7.49 17.29
LSD (5%) 0.41 0.59 0.5 1.17  
C.V. (%) 9.87 5.98 4.6 4.8   
No. of harvests 3     4     4    11   

Entries with names preceded by "x" were tested using experimental seed that may not give performance identical to commercially available seed.
Yields followed by an asterisk (*) are not significantly different from the highest yield in the column.
Yield of "Vernal" used to calculate % of check
Location:  Agronomy Research Center, IN
Design:  Randomized block, 4 replications, 17 entries
Soil Type:  Xenia silt loam
Plots:  Five rows, 2.5' x 20', (harvested 2.5' x 15')
Seeded:  April 23, 1997, with 15 lb. live seed / acre;  1.3 lb. a.i. Balan / acre, incorporated
Fertilizer:  60 lb. P2O5 and 250 lb. K2O / acre applied after first and final harvest
Insects:  Alfalfa weevil and potato leafhopper controlled by spraying
(Copyright 1999 Purdue Research Foundation)

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Send mail to Jerry Schmierer Email: jlschmierer@ucdavis.edu with questions or comments about this web site.
Copyright 1998 Purdue University Agronomy Extension
Last modified: March 09, 2000