/"CC

^

PROJECT

TITLE;

The

effect

of

row

spacing,

planting

rate

and

Cerone

on

three

spring

malting

barley

varieties

grown

under

irrigation

management.

1988.

PROJECT

LEADER;

G.F.

Stallknecht,

R.A.

Larson

and

L.

Thompson

PROJECT

LOCATION:

MSU

Southern

Agricultural

Research

Center

^

Huntley,

MT

59037

OBJECTIVES:

"

To

evaluate

malting

barley

yield

and

quality

as

affected

by

planting

rate,

row

width

and

use

of

a

plant

growth

regulator

(Cerone;.

Each

barley

variety

was

seeded

at

50,

100,

and

150

"

lb/A

on

4,

6,

or

12

inch

row

spaces

to

evaluate

effects

on

yield,

test

weight,

plumpness,

and

lodging

of,

Moravian

III,

Clark,

and

Klages

barleys.

"

SUMMARY

AND

RESULTS:

The

trial

conducted

in

1988,

was

identical

in

design

to

the

"

1987

trial.

For

the

sake

of

brevity,

we

have

included

only

one

table

on

yield

and

test

weight.

However,

data

has

been

analyzed

for

percent

plump/thin,

1000

kernel

wt.,

lodging,

seeds/spike,

n

and

spikes/meter

square.

These

are

available

upon

request.

There

were

no

differences

in

all

plot

yields

due

to

seeding

rate

or

row

width,

with

the

exception

of

Moravian,

which

yielded

significantly

less

when

planted

at

50

lb/A

or

at

a

4

inch

seeding

width.

Row

spacing

had

no

effect

on

spikes/sq.

meter

or

seeds/

spike,

however,

Moravian

has

fewer

spikes/sq.

meter

in

the

50

lb/A

seeding

rate

plot,

and

all

varieties

tended

to

have

fewer

r-t

seeds/spike

at

the

higher

seeding

rates,

an

observation

one

might

not

expect

to

occur.

^

Seeding

rate

effects

on

percent

plump

and

thin;

Seeding

rates

did

not

effect

percent

plump

with

the

exception

of

Clark

which

had

a

lower

percent

plump

in

the

100

and

150

#

seeding

rate

plots.

All

varieties

had

significantly

less

percent

thins

in

the

50

lb/A

seeding

rate

plots

a

result

you

would

expect

to

occur

due

to

perhaps

fewer

seed heads.

r-t

There

was

no

effect

of

row

spacing

on

percent

plump

and

thins

with

the

exception

of

Clark,

which

has

less

percent

plumps

at

the

4

and

6

inch

row

width.

There

were

no

differences

in

^

1000

kernel

weight

due

to

row

spacing,

and

only

the

Clark

variety

showed

a

decrease

in

1000

kernel

weight

in

the

100,

and

150

lb/A

seeding

rates.

"

The

bottom

line

results

to

date

indicate

that

planting

6

or

12

inch

rows

at

50

or

100

lb/A

would

result

in

similar

yields

and

quality

of

these

malting

barley

varieties..

Cerone

application

significantly

reduced

yields

in

all

plots

compared

to

the

untreated

controls,

due

to

extreme

heat

stress

after

application.

ft

TABLE

J.

THE

EFFECT

OF

ROW

SPACING

AND

SEEDING

RATE

WITH

CERONE

ON

THE

YIELD

AND

TEST

WEIGHT,

OF

CLARK,

KLAGES,

AND

MORAVIAN

III

SPRING

MALT

BARLEY

VARIETIES.

TEEATHEIIT

CULTIIU:

ROIAVIAV

P

A

1

A

R

B

T

E

1

S

YIELDS

bnthels

/

icre

CLAil

lUGES

TEST

IEI6BT

pooods

/

bushel

ROEAVIAH

CLAIE

ILAGES

mam:

IREDIK

liTBS

(8)

lbs/acre

mOHE

CBECR

CEE08E

CHECK

CEIOHE

CHECK

CEIOKE

CHECK

CEIOKE

CHECK

CEiONE

CHECK

50

A3.3S

A

65.42

A

58.29

75.38

59.10

75.30

51.97

IB

53.53

50.99

A

51.75

50.11

50.27

100

A9.53

A

76.75

B

63.46

75.63

60.24

72.52

52.41

1

53.65

52.15

B

51.42

49.89

50.11

150

59.53

B

77.02

B

64.47

74.64

57.24

71.15

53.47

A

53.65

51.61

AB

51.10

49.47

49.63

P-VALDE

0.0290

0.0315

0.2486

0.9808

0.7707

0.6143

0.0059

0.9570

0.02B8

0.3515

0.5886

0.4771

SE/REAK

2.473

2.823

2.572

3.697

2.919 2.939

0.2382

0.3208

0.2429

0.2989

0.4319

0.3665

SE/DIFF

3.497

3.992

3.638

5.228

4.128

4.157

0.3368

0.4537

0.3435

0.4227

0.6108

0.5183

LSD(0.05

by

t)

8.065

9.205

8.388

12.060

9.519

9.586

0.7767

1.0460

0.7921

0.9747

1.4080

1.195

ni

SPACIKS

(1)

iucbes

4

45.52

A

71.45

A

61.28

AB

72.85

55.93

A

69.27

52.23

A

53.95

51.02

A

51.16

49.26

49.98

6

59.30

C

77.38

B

66.88

A

76.17

64.33

1

75.46

53.13

B

53.85

51.93

B

51.27

50.26

50.17

12

52.22

1

70.36

A

58.07

B

76.65

56.33

A

74.24

52.49

AB

53.07

51.81

AB

51.84

49.96

49.8t

P-VALUE

0.0004

(1.0307

0.0496

0.3942

0.0106

0.2906

0.0600

0.1015

0.0544

0.1655

0.1332

0.'534

SE/REAB

SE/DIFF

LSD(0.05

by

t)

2.060

2.913

6.013

1.880

2.659

5.488

2.413

3.413

7.043

2.103

2.974

6.139

2.017

2.852

5.887

2.872

4.061

8.382

0.2663

0.3767

0.7774

0.2948

0.4170

0.8606

0.2713

0.3837

0.7919

0.2615

0.3699

0.7634

0.3464

0.4899

1.0110

C.2954

0.4176

0.8622

P-VALUE

(S

1

R)

IBTERACTIOB

0.1518

0.2527

0.5688

0.5597

0.7962

0.2425

0.6811

0.8939

0.6974

0.2389

0.6495

0.0100

RITHIIICOLUHHS,

HALUES

EOT

FOLLOIIED

BY

A

CORRDB

LETTE8

DIFFEH

AT

THE

0.05

LEVEL

ACCOJDIEG

TO

LSD

(by

t)

FOR

STUDEBT'S

TEST.

BOLD

LETTERS

IHDICATE

PROBABILITY

SIGBIFICABCE

AT

THE

O.OI

LEVEL.

p-1

PLANTED:

04-11-88

HARVESTED:

07-27-88

CERONE

APPLIED:

06-03-88

PLANT

GROWTH

STAGE:

08-10-88