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Corn Growers

2015 Arkansas Corn Quick Facts

 

U of A Variety Trial Top Performers in 2015

 

Insect Traits and Refuge

Trait

Symbol

Insects Managed

Refuge

Genuity VT Double Pro

DPRO

Corn Borers

Fall Armyworm Corn Earworm

20%

Genuity VT Triple Pro

PRO

Corn Borers

Fall Armyworm Corn Earworm

Corn Rootworm

20%

Genuity SmartStax

SS

Corn Borers

Fall Armyworm Corn Earworm

Corn Rootworm

20%

 

Viptera

 

Viptera

Corn Borers

Fall Armyworm Corn Earworm

20%

Intrasect

YHR

Corn Borers

Fall Armyworm

20%

Herculex

HX or H

Corn Borers

Fall Armyworm

50%

YieldGard CornBorer

YGCB

Corn Borers

50%

YieldGard VT Triple

VT3

Corn Borers

Corn Rootworm

50%

For help calculating the proper refuge go to http://refuge.irmcalculator.com

 

Planting Dates

 

Average Dates of the Verification Program

 

2012

5 Year Average

Planting

March 30

April 9

Emergence

April 6

April 18

Harvest

August 22

September 1

State Average Yield

178 bu/acre

153.6 bu/acre

Effect of Planting Date on Irrigated Bt Corn Yield at Marianna 2008 – 2012

 

Seeding Rates

  • Plant when ground temp is 55° @ 2 inches deep by 9:00 a.m. for three days

  • Place seed between 1.5 to 2 inches deep

  • Seeding rate should be between 30,000 and 34,000 seeds per acre

  • @$250.00 a bag, 1,000 seeds =$3.12

Seeding Rate per acre

Row Spacing (inches)

30”

38”

30”

38”

Seeds

per 10 Feet of Row

Inches

Between Seed

26,000

14.9

18.9

8.0

6.3

28,000

16.1

20.4

7.5

5.8

30, 000

17.2

21.8

7.0

5.5

32,000

18.4

23.3

6.5

5.2

34,000

19.5

24.7

6.1

4.9

36,000

20.7

26.2

5.8

4.6

38,000

21.8

27.6

5.5

4.3

40,000

23.0

29.1

5.2

4.1

 

Measuring Plant Populations

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 34 plants in 17 ft 5 in

34 X 1000 = 34,000 plants per acre

 

Determining Growth Stage

  • Corn growth stages are designated V for vegetative and R for reproductive
  • Each V number represents the upper most leaf with a visible collar (Ex:V2 = 2 leaf)
  • A corn plant typically has 19 – 21 leaves

 

Vegetative Stages

Reproductive Stages

VE

emergence

R1

silking

V1

1 leaf

R2

blister

V2

2 leaf

R3

milk

V3

3 leaf

R4

dough

V(n)

nth leaf

R5

dent

VT

tasseling

R6

physiological maturity

Growth and Development

 

 

Average from CRVP 2008-2012

Days

Inches

Applications

Planting

0

0

~ April 9

VE

9

0

 

V2

17

3

 

V4

26

6

 

V6

35

12

Atrazine & Permit Cutoff (12 in)

V8

43

22

Halex GT, Callisto & Glyphosate Cutoff (30 in)

V10

50

35

 

V12

55

51

Pre-Tassel N

V14

59

66

V16

63

81

 

R1

70

109

 

R2

76

115

Fungicide

R3

83

115

 

R4

91

115

 

R5

98

115

Irrigation Termination

R6

121

115

 

Harvest

145

115

 

 

 

 

Futures

  Open Last
Wheat CBOT May '17 422'6 424'4
Corn CBOT May '17 360'4 358'6
Soybeans CBOT May '17 938'4 941'0
Rice CBOT May '17 10210 10240
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Weather

  Fri Sat Sun
Clear Clear Partly Cloudy
Temp 68°/42° 79°/46° 82°/57°
Feels Like 68°/54° 79°/45° 82°/57°
Humidity 34% 51% 55%
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Elevator bids

 
BRUCE OAKLEY COMPANY in NORTH LITTLE ROCK, AR
Commodity Delivery Cash Date
Corn Apr 3.55 Apr 6 17
Corn Oct 3.65 Apr 6 17
Soybeans Apr 9.25 Apr 6 17
Soybeans Oct 9.25 Apr 6 17
 
BUNGE in SHERRILL, AR
Commodity Delivery Cash Date
Corn Apr 3.49 Apr 6 17
Soybeans Oct 9.16 Apr 6 17
 
JBS LIVE PORK LLC in LONDON, AR
Commodity Delivery Cash Date
Corn Apr 4.06 Apr 6 17
 
FARMERS SUPPLY in AUBREY, AR
Commodity Delivery Cash Date
Corn Apr 3.59 Apr 6 17
Soybeans Oct 9.23 Apr 6 17
Wheat, SRW Jul 4.26 Apr 6 17
 
BRUCE OAKLEY COMPANY-PENDLETON in DUMAS, AR
Commodity Delivery Cash Date
Corn Apr 3.55 Apr 6 17
Corn Oct 3.65 Apr 6 17
Soybeans Apr 9.25 Apr 6 17
Soybeans Oct 9.25 Apr 6 17
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