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Sorghum Growers

2015 Arkansas Grain Sorghum Quick Facts

 

3 Year Average Yields in bu/ac from the Arkansas Grain Sorghum Hybrid Testing Program

Hybrid

Irr

Yield1

(bu/ac)

Non Irr Yield2

(bu/ac)

DeKalb DKS51-01

147.3

133.7

Pioneer 84P80

145.9 136.3

Pioneer 83P99

142 128.4
Dyna-Gro 765B 137.9

127.1

Terral REV 9562 135.3

129.5

1Average of the irrigated 3 year (2013 – 2015) averages from Keiser, Suttgart and Rohwer

2Average of the non-irrigated 3 year (2013 – 2015) averages from Keiser and Rohwer

 

 

 

Average Dates of the Verification Program

 

2015

Planting

May 1

Emergence

May 8

Harvest

September 6

State Average Yield

100 bu/acre

 

Seeding Rates

  • Plant when ground temp is 65° @ 2 inches deep by 9:00 a.m. for three days
  • Place seed between 0.75 to 1.5 inches deep
  • Irrigated seeding rate should be 90,000 - 100,000 seeds per acre with a final plant population of 75,000 plants per acre assuming 80% germination
  • Dryland seeding rate should be 75,000 seeds per acre with a final plant population of 50,000 - 60,000 plants per acre assuming 80% germination
  • Seed should be Concep treated to allow the use of metolachlor (Dual)
  • Consider an insecticide seed treatment such as Cruiser, Poncho, etc. for improving stands

 

Seeding Rate in Pounds per acre

Seeds per Acre

Seeds per Pound

11,000

13,000

15,000

17,000

Pounds of Seed per Acre

60,000

5.5

4.6

4.0

3.5

70,000

6.4

5.4

4.7

4.1

80,000

7.3

6.2

5.3

4.7

90,000

8.2

6.9

6.0

5.3

100,000

9.1

7.7

6.7

5.9

110,000

10.0

8.5

7.3

6.3

 

 

Grain Sorghum Seeding Rates

Seeding Rate (seeds per acre)

Row Spacing (inches)

Final Stand at 80% Germination

7”

30”

38”

Seeds per 10 ft row

55,000

7.4

31.6

40.0

44,000

60,000

8.0

34.4

43.6

48,000

65,000

8.7

37.3

47.3

52,000

70,000

9.4

40.2

50.9

56,000

75,000

10.0

43.0

54.5

60,000

80,000

10.7

45.9

58.2

64,000

85,000

11.4

48.8

61.8

68,000

90,000

12.1

51.7

65.4

72,000

95,000

12.7

54.5

69.1

76,000

100,000

13.4

57.4

72.7

80,000

 

 

 

Measuring Plant Populations

Determining Final Plant Stands:

  • 30” rows measure 17 ft 5 in
  • 38” rows measure 13 ft 9 in

Count plants in that distance and multiply by 1,000.  This will equal plants per acre.  Do this in at least ten stops in the field to get an accurate count. 

Example:

30” row, count 80 plants in 17 ft 5 in 

80 X 1000 = 80,000 plants per acre

 

Growth Stage

 

 

 

5 year average from GSRVP

2008-2012

Days

Inches

Applications

Planting

0

0

~ April 23

VE

7

0

 

V1

10

1

 

V2

13

2

 

V3

16

3

 

V4

20

4

Sidedress

Fertilizer

V5

24

5

V6

28

6

V7

33

9

Atrazine Cutoff (12 in)

V8

38

13

 

Boot

62

35

Scout for Foliar Disease

Heading

69

50

Flowering

72

55

Scout for Midge

Soft Dough

82

55

Scout for Headworms

Hard Dough

93

55

Maturity

109

55

 

Harvest

129

55

~ August 28

 

                 

                  

 

Futures

  Open Last
Wheat CBOT May '17 421'4 424'6
Corn CBOT May '17 357'0 356'2
Soybeans CBOT May '17 990'4 975'6
Rice CBOT May '17 9830 9780
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Weather

  Sat Sun Mon
Thunderstorms Partly Cloudy Thunderstorms
Temp 70°/55° 77°/47° 76°/58°
Feels Like 70°/55° 77°/47° 76°/58°
Humidity 62% 57% 74%
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