Monday, July 25, 2011

DROUGHT HURTS CORN YIELDS

  The drought of 2011 certainly had a negative impact on corn yields in the Coastal Bend.  I had a Corn Hybrid Test with David Mayo, just south of Robstown that averaged 51.7 bushels per acre, with yields ranging from a low of 42.8 to a high of 59.6 bushels per acre.  
  During the growing season a total of 4.14 inches of rainfall was received on the test plot.  The corn was planted on February 22, 2011 in a replicated study and plots of 0.26 acre were machine harvested on July 8 and weighed with an electronic weigh wagon.The average plant population was 18,944 plants per acre.  This was a dryland test in a Victoria clay soil planted on 38-inch rows. 
                               
Nueces County Corn Hybrid Trial
Cooperator:  David Mayo
Jeffrey Stapper, County Extension Agent-Agricultural & Natural Resources, Nueces County
Dr. Dan D. Fromme, Assistant Professor and Extension Agronomist

Company
Hybrid
Moisture        (%)
Bu. Wt.        (lbs.)
Bu./Acre1
DeKalb
DKC 64-69 GENVT3P
13.73
a
58.0
ab
59.6
a
Warner
W4777VT3 Pro
13.83
a
58.3
a
55.8
ab
B-H Genetics
8928VTTP
13.80
a
58.7
a
55.6
ab
Syngenta
N77P3111
13.63
a
57.3
bc
53.8
abc
Dyna-Gro
56VP69
13.90
a
57.3
bc
52.0
bcd
CropLan
851VT3P
13.70
a
57.0
c
51.0
bcd
Golden Acres
27V01
13.57
a
56.7
c
50.1
bcd
Pioneer
33F85
13.87
a
58.0
ab
49.5
cd
Terral
REV28HR20
13.73
a
58.0
ab
47.0
de
Triumph
7514H
13.70
a
57.3
bc
42.8
e
Mean
---
13.75
57.67
51.7
P>F
---
0.2404
0.0085
0.0007
LSD (P=0.05)
---
NS
0.97
5.94
Standard Deviation
---
0.150
0.56
3.46
CV%
---
1.09
0.98
6.69
Means in a column followed by the same letter are not significantly different by ANOVA.
1Adjusted to 15% moisture.
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