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Table 1. Plant stand, seedling vigor, height, and canopy of eighteen hard red spring wheat cultivars during 2003 in a certified organic field near Richardton, ND.

Plant Stand

Seedling vigor1 Plant height Plant canopy
Variety

May 22

May 28 May 22 May 28 May 28 June 26 July 29 PAR2 Ground2
--------no./ft2---------
----------------- inches------------ --------%--------
AC Cadillac

31

33 7.3 7.9 5 19 31 74 34
Acadia

27

26 6.6 7.3 5 19 31 69 28
Alsen

34

31 7.4 7.5 4 18 27 72 34
Backup

31

29 7.1 7.6 5 20 29 79 28
Chris

37

39 6.5 7.4 4 16 31 73 31
Coteau

34

34 7.5 7.8 4 14 32 68 29
Dapps

32

27 7.0 6.9 4 19 30 79 33
Glupro

26

30 5.8 6.6 5 15 31 63 28
Gunner

34

36 8.0 8.5 4 14 30 76 34
Ingot

33

32 7.4 8.0 5 21 31 81 39
Marquis

34

31 6.9 7.8 4 18 35 68 31
Oklee

31

29 7.5 7.8 5 18 25 69 33
Parshall (CON)3

32

32 7.5 7.8 5 18 29 72 32
Parshall

33

33 7.8 8.1 4 19 30 78 36
Red Fife

33

32 7.1 7.8 5 18 36 85 36
Reeder

32

33 7.4 7.8 5 18 28 76 39
Stoa (CON)3

32

28 6.6 7.0 4 17 30 62 28
Stoa

32

29 7.5 7.6 5 18 31 72 33
Waldron

35

34 7.6 8.1 5 19 31 66 33
Walworth

33

32 7.6 7.8 5 20 27 68 39
Mean

32

32 7.2 7.6 5 18 30 72 33
CV %

8.2

15.7 4.9 4.6 4.4 4.3 4.3 15.1 19.2
LSD

4

NS 0.5 0.5 0.3 1 2 NS NS
1 1 = good vigor; 9 = poor vigor
2
PAR = light interception by the plant canopy; Ground = percentage ground coverage

3
(CON) = seed lots produced under conventional management; seed lots of other variety treatments generally were produced under organic management.

 

Table 2. Days to heading, spike density, insect rating, competitiveness, grain yield and quality of eighteen hard red spring wheat cultivars during 2003 in a certified organic field near Richardton, ND.
Variety

Days to
heading

Spike
density
Wheat stem
maggot1
Competition2 Grain Yield Protein Test
Weight
Kernel
weight
------no.------- ----no./ft2---- -------%------- ----%---- - bu/acre - - % - - lbs/bu - - kernels/lb -
AC Cadillac

61

31 1 64 29.0 13.5 62.6 15,611
Acadia

62

30 1 66 29.2 12.9 61.3 16,068
Alsen

60

38 1 50 30.2 13.8 63.5 15,445
Backup

58

36 0 50 24.9 16.3 63.6 16,973
Chris

62

38 2 54 26.4 14.6 61.4 18,707
Coteau

65

34 4 61 28.6 15.4 59.4 17,322
Dapps

59

34 1 49 27.1 15.3 60.8 16,095
Glupro

63

30 8 46 18.5 17.2 58.0 16,324
Gunner

63

31 4 60 31.7 14.1 63.0 17,693
Ingot

57

35 1 50 32.3 14.3 64.0 16,411
Marquis

64

33 3 72 24.9 13.6 61.0 17,310
Oklee

58

32 0 49 30.5 14.7 62.4 16,607
Parshall (CON)3

60

32 1 53 30.2 13.6 62.5 15,715
Parshall

60

36 1 59 33.2 14.0 63.0 16,603
Red Fife

66

33 1 74 27.7 13.1 60.8 16,714
Reeder

60

34 5 48 36.6 13.7 62.4 15,513
Stoa (CON)3

63

30 2 49 29.5 13.5 61.4 17,166
Stoa

62

28 1 46 32.7 13.0 61.5 17,415
Waldron

61

35 0 66 29.2 13.7 60.5 16,149
Walworth

59

37 1 50 34.2 13.9 62.0 16,586
Mean

61

33 2 56 29.3 14.2 61.7 16,621
CV %

1.2

15.3 97.9 16.0 6.0 3.0 0.8 4.5
LSD

1

NS 3 13 2.5 0.6 0.7 1064
1Visual estimate of the percentage of plants infested with wheat stem maggot.
2
Visual estimate of the weed density in plots compared with a prostrate winter wheat check plot expressed as a percentage.
3(CON) = seed lots produced under conventional management; seed lots of other variety treatments generally were produced under organic management.



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Email: drec@ndsuext.nodak.edu