North Dakota State University * Dickinson Research Extension Center
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2000 Alfalfa Plant Density Trial Dickinson, ND
       
      Hay Yield
  Harvest 12% ------------------------DM Basis-------------------
Seeding rate/ac Moisture ----Moisture---- -------------2000------------ 1999 2 yr
  ---------%-------- -------------------------------------Tons/ac--------------------------------
  1st 2nd 1st 2nd 1st 2nd Total Total  
Hand 1 plant/sqft 67 67 0.6 0.9 0.6 0.8 1.4 2.2 1.8
Hand 2 plant/sqft 66 67 0.9 0.8 0.8 0.7 1.5 2.2 1.9
Hand 3 plant/sqft 65 66 0.8 1.0 0.7 0.9 1.6 2.5 2.1
Hand 4 plant/sqft 66 66 0.7 1.1 0.7 1.0 1.7 2.7 2.2
1 lbs PLS/ac 66 67 0.8 1.0 0.7 0.8 1.5 2.3 1.9
2 lbs PLS/ac 64 65 0.7 0.9 0.6 0.8 1.4 2.2 1.8
4 lbs PLS/ac 65 66 0.7 1.1 0.6 0.9 1.5 2.4 2.0
8 lbs PLS/ac 63 65 0.6 1.1 0.5 1.0 1.5 2.5 2.0
16 lbs PLS/ac 64 65 0.7 0.9 0.6 0.8 1.4 2.2 1.8
32 lbs PLS/ac 60 64 0.7 1.0 0.5 0.9 1.4 2.3 1.9
                   
Trial Mean 65 66 0.7 1.0 0.6 0.9 1.5 2.4 1.9
C.V. % 1.8 1.5 36.0 17.4 35.9 17.4 -- -- --
LSD .05 1 1 NS NS NS NS -- -- --

1st cut=June 8, corresponds to late bud
2nd cut=July 24, corresponds to 50% bloom
PLS=Pure Live Seed
NS=no statistical difference

2000 Alfalfa Plant Density Trial Dickinson, ND
       
      Hay Yield
  Harvest 12% -------------- DM Basis --------------
Seeding rate/ac ------- Moisture ------- ------- Moisture ------- ------------------2000 ----------------
  -------------%------------ -------------------------------- Tons/ac ------------------------------
  1st cut 2nd cut 1st cut 2nd cut 1st cut 2nd cut Total
Hand 1 plant/sqft 67 67 0.6 0.9 0.6 0.8 1.4
Hand 2 plant/sqft 66 67 0.9 0.8 0.8 0.7 1.5
Hand 3 plant/sqft 65 66 0.8 1.0 0.7 0.9 1.6
Hand 4 plant/sqft 66 66 0.7 1.1 0.7 1.0 1.7
1 lbs PLS/ac 66 67 0.8 1.0 0.7 0.8 1.5
2 lbs PLS/ac 64 65 0.7 0.9 0.6 0.8 1.4
4 lbs PLS/ac 65 66 0.7 1.1 0.6 0.9 1.5
8 lbs PLS/ac 63 65 0.6 1.1 0.5 1.0 1.5
16 lbs PLS/ac 64 65 0.7 0.9 0.6 0.8 1.4
32 lbs PLS/ac 60 64 0.7 1.0 0.5 0.9 1.4
               
Trial Mean 65 66 0.7 1.0 0.6 0.9 1.5
C.V. % 1.8 1.5 36.0 17.4 35.9 17.4 --
LSD .05 1 1 NS NS NS NS --

1st cut=June 8, corresponds to late bud
2nd cut=July 24, corresponds to 50%bloom
PLS=Pure Live Seed
NS=no statistical difference

Alfalfa Plant Density Trial Dickinson, ND
   
  --------------------------------------------------------------- Hay Yield ---------------------------------------------------------------
  --------------------------------------------------------------- DM Basis ---------------------------------------------------------------
Seeding rate/ac 1996 1997 1998 1999 2000 5 yr
  Total 1st 2nd Total 1st 2nd Total 1st 2nd Total 1st 2nd Total Ave
Hand 1 plant/sqft 0.3 1.1 0.6 1.7 0.9 1.2 2.1 1.2 0.8 2.0 0.6 0.8 1.4 1.5
Hand 2 plant/sqft 0.4 1.5 0.8 2.3 1.3 1.5 2.8 1.5 0.9 2.4 0.8 0.7 1.5 1.9
Hand 3 plant/sqft 0.5 1.5 0.8 2.3 1.0 1.2 2.2 1.7 1.0 2.7 0.7 0.9 1.6 1.9
Hand 4 plant/sqft 0.5 1.4 0.9 2.3 1.1 1.4 2.5 1.4 1.0 2.4 0.7 1.0 1.7 1.9
1 lbs PLS/ac 0.7 1.2 0.9 2.1 1.0 1.2 2.2 1.4 0.6 2.0 0.7 0.8 1.5 1.7
2 lbs PLS/ac 0.8 1.2 0.9 2.1 1.1 1.3 2.4 1.6 0.9 2.5 0.6 0.8 1.4 1.8
4 lbs PLS/ac 0.8 1.5 0.9 1.4 0.9 1.3 2.2 1.8 0.7 2.5 0.6 0.9 1.5 1.7
8 lbs PLS/ac 0.8 1.5 1.1 2.6 1.0 1.4 2.4 1.8 1.0 2.8 0.5 1.0 1.5 2.0
16 lbs PLS/ac 0.8 1.6 1.0 2.6 1.0 1.6 2.6 1.8 0.7 2.5 0.6 0.8 1.4 2.0
32 lbs PLS/ac 0.7 1.6 1.1 2.7 0.8 1.5 2.3 1.7 0.8 2.5 0.5 0.9 1.4 1.9
                             
Mean 0.6 1.4 0.9 2.2 1.0 1.4 2.4 1.6 0.8 2.4 0.6 0.9 1.5 1.8
C.V. % 13.9 10. 12.6 -- 18.8 15.3 -- 14.5 33.1 -- 35.9 17.4 -- --
LSD .05 0.1 0.2 0.2 -- NS NS -- NS NS -- NS NS -- --

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Email: drec@ndsuext.nodak.edu