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20
Jun
2014
Arkansas Corn and Grain Sorghum Weekly Update – June 20, 2014
Author: Kevin Lawson, Program Associate - Corn & Grain Sorghum Verification

Corn and Grain Sorghum Research Verification – Kevin Lawson (Corn & GS Verification Coordinator)

Irrigation started on the majority of the corn verification fields this week.  Irrigation is critical over the next couple of weeks as pollination will be starting soon.

County

Hybrid

Growth Stage

Weekly Rain

Comments

———-Corn———-

Arkansas DKC64-69 VT3P

V19

0.00

Field was being prepared to irrigate. (Scouted June 19)
Clay DKC64-83 VT3P

V7

0.40

Recommended irrigation on June 21. (Scouted June 17)
Jefferson DKC62-08 SS

V17

0.70

Field was irrigated on June 16.  Recommended irrigation on June 24. (Scouted June 16)
Lee DKC66-87 VT2P

V18

0.45

Applied 100 lbs of Urea (46 units N) on June 13.  Field was irrigated on June 18.  Recommended irrigation on June 24. (Scouted June 18)
Lonoke Armor 1330

VT

0.00

Field was irrigated on June 18.  Recommended irrigation on June 25. (Scouted June 19)
Mississippi Pioneer 2089YHR

V17

0.00

Applied 100 lbs of Urea (46 units N) on June 14. Field was irrigated on June 17. Recommended irrigation on June 21. (Scouted June 17)
St Francis Terral 26BHR50

VT

0.75

Applied 100 lbs of Urea (46 units N) on June 18. Recommended irrigation. (Scouted June 19)
White Armor 1550PRO

V17

0.00

Field was irrigated on June 17.  Recommended irrigation on June 23. (Scouted June 18)

———–Grain Sorghum———-

Chicot Dyna-Gro 765B

V14

2.30

Field is still progressing well. (Scouted June 16)
Prairie Pioneer 84P80

V14

0.00

Field is still progressing well. (Scouted June 19)

 

Average CRVP Growth and Development vs. 2014 CRVP.

 Corn Stages

5 Year Avg CRVP Days to Stages

2014 Avg CRVP Days to Stages

5 Year Avg CRVP Height (in)

2014 Avg CRVP Height (in)

Avg CRVP Heat Units (2012 – 2013)

Avg CRVP Heat Units 2014

Planting

0

0 0 0

VE

10

10 0 0 145

150

V2

18

17 3 2 251

266

V4

28

26 6 5 425

463

V6

37

36 12 12 612

633

V8

45

43 22 18 791

766

V10

51

48 36 34 922

905

V12

56

53 52 49 1036

1046

V14

61

58 67 61 1155

1167

V16

65

63 82 73 1256

1281

R1

72

 

106

 

1452

 
R2

78

 

115

 

1615

 
R3

84

 

115

 

1811

 
R4

91

 

115

 

2005

 
R5

98

 

115

 

2199

 
R6

122

 

115

 

2919

 
Harvest

145

 

115

 

 

Southeast Arkansas Update – Wes Kirkpatrick (Desha County) & Kevin Norton (Ashley County)

Most corn has tasseled with some brown silk.  Some irrigation has recommenced on sandy soils following the rains of last week.

Central Arkansas Update – Brent Griffin (Prairie County)

Prairie County growers were busy laying out poly pipe and beginning irrigation. A majority of the crop has received the pre-tassel application of urea. Many fields are still showing the effects of recent heavy rain and wind damage.

Northeast Arkansas Update – Herb Ginn (Lawrence County) & Branon Thiesse (Craighead County)

Craighead County- Boy, what a difference a week makes. We have progressed from excess water a week ago to rolling out the poly pipe and beginning to irrigate. Corn is in or has entered the maximum water use stage. Early planted fields are beginning to tassel and silk, while others are receiving their pre-tassel nitrogen applications. Fields affected by strong winds two weeks ago where the plants were not broken have uprighted themselves nicely. Most of the damaged corn seemed to be centered around the Lake City area in Eastern Craighead County.

Lawrence County – Last week we were worried about too much rain, and this week poly pipe has been rolled out and corn is being watered.  The majority of our corn has tasseled and several fields are showing silks. The remaining corn is very close to tasseling.  Grain sorghum in the county is at various growth stages between V8 and close to boot.

River Valley Update – Kevin VanPelt (Conway County) & Hank Chaney (Faulkner County)

Everything is looking good in the River Valley.  Most of the crop is tasseling and producers have started irrigation.

Heat Units

Heat units were back up this week closer to the 30 year average.

 Region of the state(city)

Heat Units Accumulated June 14 – June 20

30 Year Average Heat Units June 14 – June 20

Total Heat Units Since March 9

30 Year Average Heat Units Since March 9

Southeast Arkansas (McGehee, AR)

202

199

1,808

1,849

Central Arkansas (Des Arc, AR)

193

198

1,626

1,732

Northeast Arkansas (Jonesboro, AR)

194

185

1,610

1,559

River Valley (Morrilton, AR)

197

182

1,710

1,578


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