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30
May
2014
Arkansas Corn and Grain Sorghum Weekly Update – May 30, 2014
Author: Kevin Lawson, Program Associate - Corn & Grain Sorghum Verification

Fields looked much better this week after warm weather and activation of sidedress nitrogen with recent timely rains.  Irrigation would have started on some of the fields if not for the good rains.  Six of the corn verification fields are at V8 or later.  It is taking on average 44 days from planting to get to V8.  The average for the last 5 years of verification is 45 days.

County

Hybrid

Growth Stage

Weekly Rain

Comments

———-Corn———-

Arkansas DKC64-69 VT3P

V8

1.10

Field is looking good.  Preparing for irrigation. (Scouted May 29)
Clay DKC64-83 VT3P

V3

0.00

Final plant stand is 34,500 plants per acre.  Recommended applying 50 lbs of Urea + 50 lbs of ammonium sulfate (34 units N).  (Scouted May 27)
Jefferson DKC62-08 SS

V6

0.75

Field is looking good and progressing. (Scouted May 28)
Lee DKC66-87 VT2P

V8

0.80

Applied 1.5 qts of Atrazine plus 1 qt of glyphosate on May 23. (Scouted May 28)
Lonoke Armor 1330

V9

1.60

Applied 100 lbs of ammonium sulfate + 180 lbs of Urea (104 units N) on May 25. (Scouted May 29)
Mississippi Pioneer 2089YHR

V9

0.80

Applied 1 qt of glyphosate + 1 qt of atrazine followed by 240 lbs of Urea (110 units N) on May 23.  (Scouted May 27)
St Francis Terral 26BHR50 Field was too wet to get to and scout.
White Armor 1550PRO

V9

0.60

Applied 3.6 pts of Halex GT plus 2 qts of Atrazine on May 22. (Scouted May 28)

———–Grain Sorghum———-

Chicot Dyna-Gro 765B Applied 35 gallons of 28% on May 21 (108 units N).  Did not get to scout this week.
Prairie Pioneer 84P80

V8

1.60

Applied 1.5 qts of Atrazine plus oil on May 23 followed by 175 lbs of Urea (81 units N) on May 24.  (Scouted May 28)

 

Average CRVP Growth and Development vs. 2014 CRVP.

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

27 6 5 425

457

V6

37

37 12 11 612

632

V8

45

44 22 18 791

771

V10

51

  36   922

 

V12

56

  52   1036

 

V14

61

  67   1155

 

V16

65

  82   1256

 

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)

Much needed rainfall has stopped corn irrigation in many areas of southeast Arkansas.  Rainfall totals range from 1 to 2.5 inches.  We are nearing the pre-tassel nitrogen window on several acres in the area.  Pre-tassel nitrogen will likely be applied on many of the earlier planted corn acres in the next two weeks.  The overall corn crop is starting to look pretty good.

Central Arkansas Update – Brent Griffin & Michael Paskewitz (Prairie County)

The rain once again shut down field work. As of Thursday (May 29th) we have received over 2 inches of rain at Des Arc.  Rainfall was beneficial to growers who were able to get nitrogen and herbicides out. The corn and grain sorghum looks good and made a big jump in growth this week.

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

Craighead – We have managed to catch beneficial rains everywhere in the county with the exception of the eastern portion of the county. The corn is in the 3 to 7 leaf stage and progressing at a rapid rate. Poly pipe has been laid in preparation for the beginning of irrigation. The winds subsided enough for final herbicide applications and side dressing of nitrogen.

Lawrence -As in many other parts of the state, rain has once again hit the county as we have received close to 2 inches so far this week here in Walnut Ridge.  The corn crop is showing favorable progress, but some fields appear to be showing signs of too much water in places.  For the most part, just about all of the grain sorghum has been planted and is at the three-leaf stage, with some fields further along. Though the forecast has a chance of rain every day for the next several days, the temperatures at least look good for this time of year.

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

Producers were able to get across the fields the end of last week to make fertilizer applications on the last of the corn.  We’re just wet and cloudy now with conditions expected to stay the same throughout the weekend.

Heat Units

This week (May 23 – May 30) was an interesting one for heat unit accumulation.  The temperatures stayed very consistent all over the state for the whole week.  All locations accumulated between 172 and 175 heat units which is rare this time of year.  It is taking about 770 heat units on average from planting to get to V8 in the corn verification fields.

 Region of the state(city)

Heat Units Accumulated May 23 – May 30

30 Year Average Heat Units May 23 – May 30

Total Heat Units Since March 9

30 Year Average Heat Units Since March 9

Southeast Arkansas(McGehee, AR)

175

175 1,227

1,279

Central Arkansas (Des Arc, AR)

173

169 1,082

1,161

Northeast Arkansas (Jonesboro, AR)

175

153 1,069

1,029

River Valley (Morrilton, AR)

172

150 1,156

1,057


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