North Dakota State University * Dickinson Research Extension Center
1089 State Avenue, Dickinson, ND 58601-4642 Voice: (701) 483-2348 FAX: (701) 483-2005


Wheat-Pea Tillage Trial, Wheat 2001

Dickinson, ND



Soil Moisture

Plant
Stand
Tillers
per
Plant

Growth
Stage
Days
to
Head

Spike
Count

Residue
feet plants/acre leaves spikes/acre %
Tillage
Conventional 1.3 558,922 3.2 8.8 64 1,278,259 21
Reduced 1.4 690,493 3.9 9.3 63 1,619,837 33
None 2.1 962,237 2.7 8.9 63 1,804,542 94
F-test * * NS NS NS * *
Rotation
Wheat/Pea 1.5 739,157 3.4 9.0 63 1,600,776 41
Wheat/Wheat 1.7 735,277 3.0 9.0 63 1,534,316 58
F-test NS NS NS NS NS NS *
Trial Mean 1.6 737,217 3.2 9.0 63 1,567,546 49
C.V.% 21.3 12.3 24.6 9.7 3.4 9.4 14

* = significant at the P<.05 level
NS = not significant

Wheat-Pea Tillage Trial, Wheat 2001

Dickinson, ND

Plant
Height

Yield
Test
Weight

Protein
Seeds
per
Pound

Returns
inches bu/ac lbs/bu % $/ac
Tillage
Conventional 34 46.5 56.8 15.5 16,020 131.71
Reduced 34 47.0 57.3 15.2 17,327 133.23
None 35 55.9 58.8 14.3 16,677 151.38
F-test NS * * * NS NS
Rotation
Wheat/Pea 35 53.7 57.9 15.0 16,391 149.10
Wheat/Wheat 33 45.9 57.3 15.0 16,958 128.45
F-test * * NS NS NS *
Trial Mean 34 49.8 57.6 15.0 16,675 138.78
C.V.% 2.6 8.5 1.7 2.7 5.5 10.5

* = significant at the P<.05 level
NS = not significant

Wheat-Pea Tillage Trial, Pea 2001

Dickinson, ND

 

Height
Test
Weight

Crude Protein
Grain Yield Returns 2
Year
Average
2000 2001
  in lbs/bu % lbs/ac $/ac lbs/ac
Tillage
Conventional 26.8 62.9 25.8 2,035 2,761 92.05 2,398
Reduced 25.5 62.1 25.3 2,611 2,762 92.05 2,687
None 26.5 62.8 25.1 3,472 3,011 100.37 3,242
Trial Mean 26.2 62.6 25.4 2,706 2,845 94.82 2,775
C.V. % 13.6 1.2 1.4 11.5 9.8 9.8 --
LSD .05 NS NS NS 539 NS NS --

NS = not significant
Returns calculated using market value of $2.00/bu

Wheat-Pea Tillage Trial, Pea 2001

Dickinson, ND

Seeds
per
Pound

Soil Moisture
Residue
Cover

Plant
Count
Days
to
Flower

Flower
Duration
feet % plants/acre days
Tillage
Conventional 2,058 1.6 26 233,791 59 14
Reduced 2,046 1.6 58 264,153 58 15
None 2,050 2.4 93 260,105 60 14
Trial Mean 2,051 1.9 59 252,683 58.8 14.3
C.V. % 10.7 17.4 12.3 13.5 1.6 6.3
LSD .05 NS 0.6 12 NS NS NS

NS = not significant

Wheat-Canola Tillage Trial, Wheat 2001

Dickinson, ND

Soil
Moisture
Plant
Stand
Tillers
per
plant

Growth
Stage
Days
to
Head

Spike
Count

Residue
feet plants/acre leaves spikes/acre %
Tillage
Conventional 1.1 556,139 3.0 9.3 65 1,493,832 11
Reduced 1.6 659,371 3.8 9.1 63 1,523,869 29
None 1.8 870,896 2.6 9.3 61 1,727,623 88
F-test * * NS NS NS NS *
Rotation
Wheat/Canola 1.5 702,891 3.0 9.3 63 1,586,269 34
Wheat/Wheat 1.6 688,047 3.3 9.2 63 1,577,161 52
F-test NS NS NS NS NS NS *
Trial Mean 1.5 695,469 3.1 9.2 63 1,581,715 43
C.V.% 17.8 18.0 31.9 5.1 2.5 18.4 18.1


* = significant at the P<.05 level
NS = not significant

Wheat-Canola Tillage Trial, Wheat 2001

Dickinson, ND

Plant
Height

Yield
Test
Weight

Protein
Seeds
per
Pound

Returns
inches bu/ac lbs/bu % $/ac
Tillage
Conventional 32 37.6 56.8 16.3 17,066 108.31
Reduced 33 44.3 57.2 15.4 16,986 125.94
None 33 44.9 58.3 14.9 17,304 125.14
F-test NS NS * * NS NS
Rotation            
Wheat/Canola 33 42.2 57.5 15.6 16,970 119.74
Wheat/Wheat 33 42.3 57.3 15.4 17,267 119.85
F-test NS NS NS NS NS NS
Trial Mean 24 42.3 57.4 15.5 17,119 119.79
C.V.% 2.3 10.9 2.0 2.3 7.3 11.5


* = significant at the P<.05 level
NS = not significant

Wheat-Canola Tillage Trial, Canola 2001

Dickinson, ND



Residue
Cover



Test
Weight
Oil
@ 8.5%
Moisture
Grain Yield 2
Year
Average
2000 2001
  % lbs/bu % lbs/ac lbs/ac
Tillage
Conventional 16 46.3 43.3 391 926 659
Reduced 39 46.2 43.9 638 999 819
None 85 47.6 44.2 860 1117 989
Trial Mean 47 46.7 43.8 630 1014 822
C.V. % 35.2 4.3 2.9 23.8 20.2 --
LSD .05 28 NS NS NS NS --

NS = not significant

Wheat-Canola Tillage Trial, Canola 2001

Dickinson, ND

Seeds
per
Pound

Soil
Moisture
Days
to
Flower

Flower Duration
Plant
Count
feet days plants/acre
Tillage
Conventional 142,028 1.4 55 21 400,278
Reduced 142,218 1.3 53 22 268,202
None 143,841 1.8 50 24 248,466
Trial Mean 142,696 2 53 22 305,649
C.V. % 6.8 21.3 2.1 9.0 29.5
LSD .05 NS NS 2 NS NS

NS = not significant


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Email: drec@ndsuext.nodak.edu