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2005 Winter Elite Wheat trial
Eric P. Eldredge, Clinton C. Shock, and Lamont D. Saunders
Malheur Experiment Station
Oregon State University
Ontario, OR
Introduction
Materials and Methods
The
previous crop was sweet corn. After harvest, the corn stalks were flailed, the
field was disked, and the soil was
sampled and analyzed. The analysis showed 40 lb nitrogen (N)/acre in the top 2
ft of soil, and in the top foot of soil, 79 lb available phosphate (P2O5),
1,267 lb soluble potash (K2O), and 51 lb sulfate (SO4)/acre,
with 3,025 ppm calcium (Ca), 521 ppm magnesium (Mg), 175 ppm sodium (Na), 1.7
ppm zinc (Zn), 9 ppm iron (Fe), 8 ppm manganese (Mn), 0.6 ppm copper (Cu), 0.5
ppm boron (B), pH 7.7, and 3.5 percent organic matter. Preplant fertilizer was broadcast
in October, 2004 to apply 50 lb N/acre, 80 lb elemental S/acre, 2 lb Cu/acre,
and 2 lb B/acre. The soil was deep ripped, plowed, and ground hogged to prepare
the seedbed. The field was corrugated into 30-inch rows.
The Winter
Elite Wheat Trial was comprised of 38 soft white winter (SWW) wheat cultivars
or lines, 4 of which were club types, and 5 with resistance to imazamox
herbicide for use in the BASF Clearfield® system (designated
SWW-CF). One ultra-soft white wheat and one hard white wheat were also included
in the trial. Seed of all entries was treated with fungicide and insecticide seed treatment prior to planting. Grain
was planted at 30 live seed/ft2, corresponding to a seeding rate of
approximately 110 lb/acre. The experimental design was a randomized complete
block with three replications. Grain was planted on October 19, 2004, with a
small plot grain drill, into plots 5 by 20 ft, and the field was recorrugated.
Rainfall on October 19 totaled 0.15 inch, and through the end of October an additional
2.02 inch of rain fell. Emergence was seen on November 11.
The
trial was irrigated on May 2 for 30 hours. Broadleaf weeds were controlled with
Bronate® herbicide at
1qt/acre applied on May 20. Urea prills fertilizer to supply 50 lb N/acre was
broadcast over the trial on May 24, and the trial was furrow irrigated for 8
hours on May 25.The trial was irrigated for 24 hours on June 8 and again on
June 21. Observations of heading date were made from May 21 through May 31. Alleys were cut with a sickle bar mower on
June 8. Plant
height at maturity was measured in the trial on July 19. The alleys
were recut with a Hege plot combine on July 20 and the resulting length of each
plot was measured and recorded. The plots were harvested on July 20 with a Hege
plot combine. Yield and test weight differences were compared using ANOVA and
least significant differences at the 5 percent probability level, LSD (0.05).
Differences in yield or test weight between varieties should be equal to or
greater than the corresponding LSD (0.05) value before any variety is
considered different from another in this trial.
Results and Discussion
The plants
in the Winter Elite Wheat Trial grew well, with grain heads developing in these
varieties from May 20 to May 31. Height at maturity ranged from 34 to 42 inches
tall. Lodging was observed in only three plots in the first replicate; one plot
of 'IDO620' lodged 80 percent, one plot of 'OR9801757' lodged 30 percent, and
one plot of 'OR9901619' lodged 10 percent. Test weights in this trial ranged
from 60 to 65 lb/bushel.
Among the
highest yielding wheat varieties were 'BZ6W93-901a' with 152 bu/acre,
'ID92-16004A' with 151, 'Dune' with 149, 'Tubbs' with 147, 'ORH010920' with
147, 'ORH010917' with 147, 'WestBred528' with 146, 'Simon' with 143, 'Mohler'
with 143, 'ORH010918' with 143, 'OR941611' with 143, 'Finch' with 142,
'OR2010007-05C' with 141, 'OR9901887' with 140, and 'ID92-22407A' with 140
bu/acre (Table 1). 'Stephens' wheat produced 133 bu/acre.
Information
on previous wheat trials at Malheur Experiment Station is available on the web
at http://cropinfo.net. Information on the performance of the varieties in this
trial at other Oregon locations is available on the web at
http://cropandsoil.oregonstate.edu/wheat/state_performance_data.htm.
Table 1. Winter Elite Wheat Trial market class, 50 percent heading date, height at maturity, and yield, Malheur Experiment Station, Oregon State University, Ontario, OR, 2005.
|
Entry |
Origin / developer |
Class / traits* |
50% heading |
Height at maturity |
Yield |
Test weight |
|
|
|
|
date |
inch |
bu/acre† |
lb/bu |
|
BZ6W93-901a |
WestBred |
SWW |
5/26 |
40 |
152.2 |
64.1 |
|
ID92-16004A |
U of I |
SWW |
5/27 |
39 |
151.0 |
62.1 |
|
Dune |
U of I |
SWW |
5/23 |
36 |
149.4 |
64.1 |
|
Tubbs |
OSU |
SWW |
5/26 |
40 |
147.0 |
62.3 |
|
ORH010920 |
OSU |
SWW |
5/21 |
35 |
146.9 |
62.6 |
|
ORH010917 |
OSU |
SWW |
5/23 |
37 |
146.7 |
61.8 |
|
WestBred528 |
WestBred |
SWW |
5/22 |
37 |
145.5 |
62.8 |
|
Simon |
U of I |
SWW |
5/27 |
39 |
143.4 |
62.9 |
|
Mohler |
WestBred |
SWW |
5/25 |
39 |
143.4 |
62.9 |
|
ORH010918 |
OSU |
SWW |
5/23 |
35 |
143.2 |
63.1 |
|
OR941611 |
OSU |
SWW |
5/26 |
40 |
142.7 |
63.0 |
|
Finch |
ARS-WSU |
Club |
5/30 |
42 |
141.5 |
64.7 |
|
OR2010007-05C |
OSU |
SWW-CF |
5/27 |
40 |
141.1 |
61.8 |
|
OR9901887 |
OSU |
SWW |
5/27 |
40 |
140.4 |
63.2 |
|
ID92-22407A |
U of I |
SWW |
5/28 |
37 |
140.1 |
62.8 |
|
ORSS-1757‡ |
OSU |
SWW |
5/26 |
39 |
138.3 |
63.7 |
|
IDO587CL |
U of I |
SWW-CF |
5/24 |
38 |
138.2 |
N/A§ |
|
ORI202183C |
OSU |
SWW-CF |
5/27 |
39 |
138.2 |
62.2 |
|
ORH011481 |
OSU |
SWW |
5/20 |
34 |
137.5 |
62.1 |
|
ORCF-102 |
OSU |
SWW-CF |
5/28 |
40 |
135.6 |
63.3 |
|
ORH010085 |
OSU |
SWW |
5/26 |
37 |
134.5 |
N/A |
|
ORH012183 |
OSU |
SWW |
5/24 |
36 |
134.4 |
64.5 |
|
Coda |
ARS-WSU |
Club |
5/30 |
42 |
133.9 |
63.5 |
|
ORH010083 |
OSU |
SWW |
5/26 |
38 |
133.8 |
62.9 |
|
OR3970965 |
OSU |
SWW |
5/29 |
41 |
133.6 |
62.2 |
|
OR2010239 |
OSU |
SWW |
5/26 |
39 |
133.2 |
62.5 |
|
Stephens |
OSU |
SWW |
5/25 |
38 |
133.1 |
62.3 |
|
OR9900553 |
OSU |
SWW |
5/28 |
38 |
132.6 |
63.6 |
|
Masami |
WSU |
SWW |
5/31 |
42 |
132.5 |
62.6 |
|
OR2010241 |
OSU |
SWW |
5/27 |
39 |
131.8 |
62.7 |
|
OR9901619 |
OSU |
SWW |
5/30 |
42 |
130.9 |
61.0 |
|
Madsen |
ARS-WSU |
SWW |
5/27 |
39 |
129.9 |
62.8 |
|
ORCF-101 |
OSU |
SWW-CF |
5/27 |
38 |
129.1 |
62.8 |
|
Brundage96 |
U of I |
SWW |
5/26 |
37 |
129.0 |
62.0 |
|
Gene |
OSU |
SWW |
5/26 |
34 |
128.2 |
60.0 |
|
Rod |
WSU |
SWW |
5/26 |
41 |
127.5 |
62.6 |
