Soybean Production - 2001 Crops Day

Soybeans

Soybean Production Trial at Hettinger

2000 & 2001

The trial was planted on May 10, 2000 into HRSW stubble and on May 8, 2001 into barley stubble that was either no-till or tilled once with at light field cultivator. Seed was inoculated prior to planting. Two varieties were used, Daksoy and Traill. These varieties were randomized within 7, 21 and 30 inch row spacings and at a seeding rate of 100, 150 and 200 thousand live seeds per acre. The trial was harvested on September 14, 2000 and on September 21, 2001. The 2001 trial sustained severe hail damage on June 18 however, the crop recovered nicely with axillary bud regrowth.

Summary of Results

Tillage system had the greatest impact on yield with the no-till system averaging 76 percent higher yields than the minimum tillage system. No-till crop maturity was 2 days later, plants were taller and oil content was similar to the minimum tillage system. Row spacing had the least impact on yield, quality and other agronomic characteristics, although there were more weeds with the wider row spacings (personal observation). Yields tended to increase with increasing seeding rates. Other agronomic and quality characteristics remained the same for seeding rates. Varietal differences were observed. Growers should select adapted varieties based on variety trial information.

2000/01 Soybean Production Trial - Combined Means - No-till

Row Spacing

Seeding Rate

Variety

Days to Bloom

Days to Canopy Closure

Days to Mature

Plant Height

Pod Height

Test Weight

Oil Content

Yield

inches

1000's

cm

cm

lbs/bu

%

bu/ac

7

100

Daksoy

66

88

116

48

0.5

57.2

21.0

12.3

Traill

67

82

115

48

1.1

58.0

20.6

19.2

150

Daksoy

66

84

114

45

0.4

57.2

21.0

17.3

Traill

66

78

115

46

0.7

58.2

20.5

24.1

200

Daksoy

66

83

115

42

0.3

57.6

20.9

18.8

Traill

66

77

116

47

1.2

58.2

20.4

25.4

21

100

Daksoy

66

94

114

48

0.4

57.4

21.0

13.5

Traill

66

90

115

53

1.0

58.0

20.6

21.6

150

Daksoy

64

92

114

47

0.8

57.3

20.8

17.7

Traill

66

89

114

54

1.3

58.0

20.6

25.5

200

Daksoy

66

92

113

49

0.9

57.4

20.9

20.1

Traill

66

86

115

54

1.0

58.2

20.4

25.6

30

100

Daksoy

66

--

114

51

0.5

57.0

21.0

12.9

Traill

66

--

113

53

1.1

58.4

20.8

18.2

150

Daksoy

66

--

113

50

1.8

57.2

21.1

14.9

Traill

66

--

113

52

1.1

57.6

20.7

20.6

200

Daksoy

66

--

114

52

1.4

57.2

21.0

17.2

Traill

65

--

113

55

1.4

58.0

20.8

23.8

2000/01 Soybean Production Trial - Combined Means - Minimum Till

Row Spacing

Seeding Rate

Variety

Days to Bloom

Days to Canopy Closure

Days to Mature

Plant Height

Pod Height

Test Weight

Oil Content

Yield

inches

1000's

cm

cm

lbs/bu

%

bu/ac

7

100

Daksoy

66

--

113

42

0.6

--

21.0

7.0

Traill

66

--

114

45

0.6

57.4

20.6

9.1

150

Daksoy

67

--

116

42

0.4

--

20.8

7.9

Traill

66

--

114

47

0.8

57.8

20.5

11.7

200

Daksoy

66

--

113

43

0.7

55.7

20.8

8.4

Traill

66

82

114

45

0.4

57.4

20.4

14.1

21

100

Daksoy

66

--

111

44

0.3

--

20.9

6.7

Traill

66

--

112

43

0.6

--

20.6

12.4

150

Daksoy

66

--

110

40

0.8

--

20.7

9.8

Traill

66

--

111

40

0.4

--

20.5

10.2

200

Daksoy

66

--

110

42

0.7

--

20.5

8.8

Traill

66

--

112

42

0.2

--

20.4

11.8

30

100

Daksoy

66

--

110

42

0.8

56.6

21.0

10.6

Traill

66

--

112

45

0.1

57.8

20.7

14.2

150

Daksoy

66

--

111

43

0.4

56.7

21.0

10.8

Traill

66

--

112

44

0.8

57.9

20.6

15.4

200

Daksoy

66

--

110

45

0.1

57.3

20.9

12.8

Traill

65

--

112

44

0.5

58.0

20.6

16.2

 

 

Combined Means - Tillage Systems

Tillage System

Days to Bloom

Days to Mature

Plant Height

Pod Height

Test Weight

Oil Content

Yield

cm

cm

lbs/bu

%

bu/ac

No-till

66

114

50

1.0

57.7

20.8

19.4

Minimum

66

112

43

0.5

57.4

20.7

11.0

 

 

Combined Means - Row Spacing

Row Spacing

Days to Bloom

Days to Mature

Plant Height

Pod Height

Test Weight

Oil Content

Yield

inches

cm

cm

lbs/bu

%

bu/ac

7

66

114

45

0.6

57.6

20.6

14.8

21

66

112

46

0.6

57.7

20.7

15.4

30

66

112

48

0.8

57.6

20.9

15.7

 

Combined Means - Seeding Rate

Seeding Rate

Days to Bloom

Days to Mature

Plant Height

Pod Height

Test Weight

Oil Content

Yield

1000's

cm

cm

lbs/bu

%

bu/ac

100

66

113

46

0.6

57.6

20.8

13.2

150

66

113

46

0.8

57.6

20.8

15.6

200

66

113

46

0.7

57.6

20.7

17.1

 

Combined Means - Varieties

Variety

Days to Bloom

Days to Mature

Plant Height

Pod Height

Test Weight

Oil Content

Yield

cm

cm

lbs/bu

%

bu/ac

Daksoy

66

112

45

0.7

57.2

20.9

12.8

Traill

66

114

48

0.8

58.0

20.6

17.8

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