^
PROJECT
TITLE;
Wild
oat
and
broadlea-f
herbicide
study
on
spring
barley.
YEAR/PROJECT:
1988/754
^
PROJECT
PERSONNEL;
Leader
-
Vern
R.
Stewart,
Todd
K.
Keener
-
Research
Specialist.
Northwestern
Agricultural
Reseach
Center,
Kali
spell,
MT.
SUMMARY;
Four
wild
oat
herbicides
were
combined
with
bromoxynil
or
Harmony
Extra
with
excellent
broadleaf
weed
control
and
varying
degrees
o-f
wild
oat
control.
HOE
7113
(
Puma
)
and
Tiller
are
injurious
to
spring
barley.
F-t
P-l
r?
RESEARCH
METHODS;
Herbicides
were
applied
post
emergence
using
a
tractor
mounted
research
type
sprayer.
Plots
were
10
-feet
by
12
-feet
with
treatments
being
replicated
â– four
times
in
a
randomized
complete
block.
A
spray
volume
of
24.85
gpa
was
applied
using
8002
nozzles
at
32
psi.
Planting
data;
Crop:
Gallatin
spring
barley
Seedbed
preparation;
Fall
plow
and
disc,
spring
disc
and
cultivated,
Seedbed
finished
with
brillion
packer
Previous
crop:
Spring
barley
Type
of
planting;
Press-type
drill
Seeding
depth:
1
1/2
inches
Seeding
rate:
60
lbs/A
Maintenance
sprays;
none
Surfactant
or
additions:
see
test
details
Appl
ication
data:
#1
Application
stage;
1-3
leaf
wild
oats
Date:
5/19/88
Air
temp;
57
F
Soil
temp;
65
F
^
Rel.
Hum.
32
7.
Wind:
2.5mph
Cloud
cover;
clear
Soil
moisture:
Topsoil
-
good
subsoil
-
very
good
Crop
and
weed
stages
at
applications;
Barley;
4-5
leaf
Wild
oats
(
Avena
fatua
)
2
1/2
to
3
leaf
Broadleaf
Weeds;
1st
true
leaves
up
to
1"
in
diameter
#2
Application
stage;
3-5
leaf
of
wild
oats
Date;
5/25
Air
temp:
53
F
Soil
temp;
50
F
Rel.
Hum.
42
Wind;
0-2mph
Cloud
cover;
clear
Soil
moisture:
Topsoil
-
moist
subsoil
-
very
good
Crop
and
weed
stages
at
applications:
Crop:
4-6
leaf,
5-6"
tall,
pre-tiller
Wild
oats
(
Avena
fatua
)
3
If
(807.),
4
If
(107.),
5
leaf
(107.)
Lambsquarter
(
Chenopodium
album
)
6-8
leaves
Henbit
(
Lamium
amplexicauli
)
4
leaves
Night
flowering
catchfly
(
Silene
noctiflora
)
2-6
leaves
Fanweed
(
Thlaspi
arvense
)
4-6
leaves
RESULTS:
Yields
of
treatments
varied
troro
64.0
to
93.7
bu/A
with
the
check
yielding
35.0
bu/A
(
all
treatments
were
significantly
different
than
the
check
}.
Addition
of
Moract
surfactant
to
Hoelon
treatments
increased
yields
and
wild
oat
control.
Hoelon
plus
Harmony
Extra
treatment
resulted
in
higher
yields
and
better
wild
oat
contol
than
Hoelon
plus
bromoxynil
Tiller
alone
and
with
broadleaf
herbicides
all
performed
about
the
same
with
Tiller
plus
bromoxynil
giving
the
highest
yield.
HOE
7113
alone
or
combined
with
Harmony
Extra
were
about
equal
but
HOE
7113
plus
bromoxynil
was
very
injurious
to
spring
barley.
Assert
alone
gave
good
yields
and
weed
control
but
when
combined
with
bromoxynil
and
Harmony
Extra
decreased
yields
and
wild
oat
control.
Table
1.
Agronomic
data
from
the
wild
oat
and
broadleaf
herbicide
study
on
spring
barley,
NWARC,
Kalispell,
MI.
Field
R-13.
Planted:
April
11,
1988
Date
harvested:
August
18,1988
Treatment
Rate
Stage
Injury
1/
#
ai/A
Crop
W
Oat
V,
Broadlea-f
Weed
Control
2/
LQ
NFC
FW
HB
Noelon
.75
1-3
leaf
.2500
7.875
.0000
.0000
.0000
.0000
n
Noel
on
+
Moract
.75
+
1-3
leaf
1.250
8.750
.0000
.0000
.0000
.0000
1
pt
Hoelon
1.0
1-3
leaf
1.000
8.875
.0000
.0000
.0000
.0000
Hoelon
-f
Moract
1.0
-t-
1-3
leaf
.7500
8.375
.0000
.0000
.0000
.0000
1
pt
One
Shot
1.1
1-3
leaf
.3750
8.250
75.00
72.50
73.75
88.75
Hoelon
+
*
1.0
-*â–
1-3
leaf
2.375
9.750
100.0
100.0
100.0
99.50
Harmy
Xtra-<-
S
.012
Tiller
.
66
3-5
leaf
4.875
9.750
100.0
77.50
100.0
95.75
Tiller
+
Brom
.
66
+
3-5
leaf
3.125
9.375
98.75
98.75
100.0
93.75
.25
Ti
11
er
+
*
.66
•*â–
3-5
leaf
2.250
9.375
100.0100.0
100.0
98.25
Harmy
Xtra
+
S
.012
Tiller
Banvel
.
66
+
3-5
leaf
2.500
7.000
100.0
100.0
100.0
98.25
.063
HOE
7113
(PUMA)
.20
3-5
leaf
6.875
10.00
.0000
.0000
.0000
.0000
HOE
7113
+
.20
3-5
leaf
8.500
10.00
97.50
97.50
98.75
63.75
Bromox.
.25
HOE
7113
+
*
.20
+
3-5
leaf
4.750
9.875
100.0
100.0
'100.0
92.00
Harmy
Xtra
+
S
.012
Assert
sur-f
.45
3-5
leaf
1.000
5.000
93.75
95.00
100.0
96.00
Assert
+
bromox
.45
+
3-5
leaf
.8750
6.000
100.0
100.0
100.0
98.75
+
sur-f
.25
Assert
+
t
.45
+
3-5
leaf
2.000
6.375
100.0
100.0
100.0
100.0
Harmy
Xtra-*-
S
.012
Check
3-5
leaf
.0000
.0000
.0000
.0000
.0000
.0000
X
2.515
7.919
70.00
68.60
70.44
64.99
LSD
1.757
1.414
3.827 15.72
1.181
18.80
CV
24.57
6.281
1.923
8.059
.5896
10.17
P-VALUE
.0000
.0000 .0000 .0000
.0000
.0000
1/
Injury
0-10,
0
=
no
injury,
10
=
dead
plants
2/
LQ=Lambsquarter
(Chenopodium
album),
NFC=Night
-flowering
catchfly
<Silene
noctiflora),
FW^^Fanweed
(Thlaspi
arvense),
HB=Henbit
(Lamium
amp1exicaul1)
*
Harmony
Extra
applications
have
.25%
v/v
Atplus
411
<
S
)
Arc
n
Table
2.
Agronomic
data
from
the
wild
oat
and
broadlea-f
herbicide
study
on
spring
barley,
NWARC,
Kalispell,
MT.
Field
R-13
Planted:
April
11,
1988
Date
harvested:
August
18,1988
Treatment
Rate
Stage
Height
7.
Wild
Oat
Control
%
Barley
«
ai/A
(Inches)
7/5
7/15
Stand
Hoelon
.75
1-3
leaf
30.38
65.00
75.00
100.0
Hoelon
+
Moract
.75
+
1-3
leaf
29.38
85.00
80.00
98.75
1
pt
Hoelon
1.0
1-3
leaf
29.38
76.25
78.75
100.0
Hoelon
+
Moract
1.0
+
1-3
leaf
30.63
90.00
86.75
98.75
1
pt
One
Shot
1.1
1-3
leaf
30.75
76.25
66.25
100.0
•
Hoelon
+
*
1.0
+
1-3
leaf
28.75
85.00
80.00
100.0
Harmy
Xtra+
S
.012
Ti
11
er
.66
3-5
leaf
27.63
97.00
96.50
92.50
Tiller
+
Brom
.66
+
3-5
leaf
27.25
97.25
98.50
91.25
.25
Tiller
+
*
.66
+
3-5
leaf
28.50
91.00
92.25
93.75
Harmy
Xtra
+S
.012
Tiller
+
Banvel
.66
+
3-5
leaf
29.25
87.50
88.00
95.00
.063
HOE
7113
(PUMA)
.20
3-5
leaf
28.38
98.50
99.22
90.00
HOE
7113
+
.20
3-5
leaf
24.75
98.50
97.25
63.75
Bromox.
.25
HOE
7113
+
.20
+
3-5
leaf
28.63
96.00
97.22
93.75
Harmy
Xtra
+S*
.012
Assert
+
surf
45
3-5
leaf
27.38
93.25
89.25
93.75
Assert
+
bromox
.45
+
3-5
leaf
27.38
84.75 81.75
93.75
+
surf
.25
Assert
+
*
.45
+
3-5
leaf
28.00
81.25
83.00
92.50
Harmy
Xtra+
S
.012
Check
3-5
leaf
31.0
.0000
.0000
100.0
X
28.67
82.50
82.85
93.97
LSD
2.768
9.742
13.46
6.231
CV
3.395
4.153
5.713
2.332
P-VALUE
.0433
.0000 .0000
.0000
$
Harmony
Extra
applications
have
.25%
v/v
Atplus
411
(
lioract
)
Assert
applications
,
sur-factant
added
(
.6
oz
for
every
gal
spray
solution
over
10
gpa
).
Plots
are
10'
X
12'
X
6
»
.0165
acres
Volume
is
24.85
gpa
~
1552
ml/plots
Hoe
7113
(
Puma
)
is
.63
#
ai/gal,
One
Shot
is
2.58
#
ai/
A,
Tiller
is
3.08
«
ai/A.
Table
3.
Agronomic
data
from
the
wild
oat
and
broadlea-F
herbicide
study
on
spring
barley,
NWARC,
Kalispell,
MT.
Field
R'13.
Planted:
April
11,
1988
Date
harvested:
August
18,1988
Rate
Stage
YIELD
TEST
WT
'A
PLUMP
tt
ai/A
Bu/A
Ib/Bu
Hoelon
.75
1-3
leaf
67.4a
52.13a
91.55a
Hoelon
+
Moract
.75
+
1-3
leaf
78.0a
52.75a
91.68a
1
pt
Hoelon
1.0
1-3
leaf
73.9a
52.38a
93.02a
Hoelon
+
Moract
1.0
+
1-3
leaf
81.6a
52.18a
90.82a
1
pt
One
Shot
1.1
1-3
leaf
73.7a
52.B0a
93.33a
Hoelon
+
*
1.0
+
1-3
leaf
80.5a
52.35a
91.82a
Harmy
Xtra+
S
.012
Tiller
.66
3-5
leaf
83.2a
52.8Ba
94.63a
Tiller
+
Brom
.66
+
3-5
leaf
89.6a
52.77a
94.93a
.25
Tiller
+
.66
+
3-5
leaf
84.0a
52.97a
93.47a
Harmy
Xtra
+S
.012
Tiller
+
Banvel
.66
+
3-5
leaf
84.7a
53.15a
94.90a
.063
HOE
7113
(PUMA)
.20
3-5
leaf
85.0a
52.40a
91.47a
HOE
7113
+
.20
3-5
leaf
72.1a
50.10
88.95a
Bromox.
.25
HOE
7113
+
.20
+
3-5
leaf
93.7a
53.00a
93.75a
Harmy
Xtra
+
S
.012
Assert
+
surf
.45
3-5
leaf
81.4a
51.75a
93.55a
Assert
+
bromox
.45
+
3-5
leaf
72.2a
51.78a
93.32a
+
surf
.25
Assert
+
.45
+
3-5
leaf
64.0a
50.26
89.72a
Harmy
Xtra+
S
.012
Check
3-5
leaf
35.0
49.00
83.15
X
76.5
52.04
92.00
LSD
11.0
1.426
3.076
CV
5.04
.9639
1.176
P-VALUE
.000
.0000
.0000
a/
Values
significantly
greater
than
the
check
at
.05
probability
1
