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Table 2.  1997-2000 alfalfa variety yields at the Agronomy Research Center, West Lafayette , IN                    
Seeding date:  April 23, 1997        
    Dry Matter Yield (T/A)
1997 1998 1999 2000 97-00 % of Check
  Entry total   total   total   total   total   97-98 97-99 97-00
GEM 3.28 * 7.36 * 7.77 * 6.99 * 25.41 * 133 124 121
5312 3.02 * 6.83 7.74 * 7.43 * 25.21 * 123 118 120
Demand 2.96 * 7.01 * 7.84 * 7.26 * 25.07 * 124 120 119
5454 2.89 * 7.15 * 7.74 * 7.39 * 24.99 * 125 120 119
Choice 2.98 * 7.12 * 7.78 * 7.10 * 24.99 * 126 120 119
DK140 3.21 * 7.53 * 7.43 * 6.80 24.97 * 134 122 119
2888 3.00 * 6.92 7.53 * 7.35 * 24.95 * 124 118 118
DK141 3.02 * 6.86 7.59 * 7.14 * 24.62 * 123 118 117
631 3.06 * 6.79 7.76 * 7.02 * 24.48 * 123 119 116
Complete 2.93 * 7.03 * 7.26 6.86 * 24.08 * 124 116 114
WH 80 2.87 6.80 7.65 * 6.64 23.96 * 120 117 114
DK127 2.63 6.86 7.39 * 6.73 23.61 118 114 112
Rushmore 2.78 6.90 7.30 6.50 23.49 121 114 112
Ace 3.05 * 6.99 * 7.13 5.98 23.15 125 116 110
Spur 2.70 6.97 * 7.33 6.14 23.14 120 114 110
Safeguard 2.55 6.51 7.20 6.11 22.36 113 109 106
Vernal 2.53 5.50 6.82   6.20   21.06   100 100 100
  Grand mean 2.91   6.89   7.49   6.80   24.09    
LSD (5%) 0.41 0.59 0.48 0.63 1.56
C.V. (%) 9.9 6.0 4.6 6.6 4.6
  No. of harvests 3   4   4   4   15        
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: West Lafayette, 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 2000 Purdue Research Foundation)

 

 

 

For more forage information contact Dr. Keith Johnson: johnsonk@purdue.edu

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