North Carolina measured crop performance corn and corn silage 1997

(1)

(2)

NORTH CAROLINA

MEASURED CROP PERFORMANCE

CORN AND CORN SILAGE 1997

D. T.Bowman

Official Variety Testing

~artment

ofCrop Science

(3)

TABLE OF CONTENTS

INTRODUCTION 1

Comparing Hybrids

2 Figure 1.

Location of Official Variety Tests

5 Cooperators

6

CORN HYBRIDS

Entries

Table 1.

Name and contact person for sponsoring

agencies

.

7 7

7

Field Plot Technique

10 Seasonal Condi tions

10 Data

11 Results

11 Weather Data

13 Table 2.

Cultural Practices

18 Table 3.

Soil Test Results

19 Tables 4-12.

Data for the Tidewater region

20 Tables 13-21.

Data for the Coastal Plain region

28

(4)

TABLE OF CONTENTS

CORN SII.A.GE 40

Entries

40 Table 28.

Name and contact person for sponsoring

agencies

40 Field Plot Technique

42 Table 29.

Cultural Practices

42 Table 30.

Soil Test Results

43 Seasonal Condi tions

43 Data

43 Results

43 Weather data

44

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1

PERFORMANCE OF CORN AND CORN SILAGE

IN NORTH CAROLINA

INTRODUCTION

with the large number of commercially available and

prospec-tive hybrids of corn, i t becomes difficult for growers to select a

superior variety suited for their particular area of the state and

their individual farming operations. To make this decision, the

growers need up-to-date, unbiased, reliable information. The

Official Variety Testing Program, through this report, seeks to

provide that type of information.1

This report is concerned with corn hybrids in all production

areas of the state. The second section deals with corn silage.

Both sections are complete in that they contain information on

experimental procedure, location of the tests, a discussion of the

data for 1997,2 as well as summary tables for the past two and

three years.

It is hoped that the organization of this bulletin will

provide data in a complete form to those interested in the various

crops.

IThe Official Variety Testing Program recognizes the cooperative spirit and civic-minded service rendered by the farmers who have furnished, prepared, and cultivated the land for these trials. Research technicians, Dwight Parrish, Ken Barnes, Johnny Denton, and Phil Johnson assisted in conducting these tests. Jane Dove Corl prepared the text for this bulletin.

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2

Growers

are

cautioned

against

making

varietal

selection

decisions based on an individual location in anyone year.

True

varietal performance may have been masked by the unusual weather

conditions

experienced

at

anyone

location

or

anyone

growing

season.

comparing Hybrids

Performance

of

a

hybrid

cannot

be

tested

with

absolute

precision.

Although the tests are conducted in a uniform manner,

as

much

as

possible,

uncontrollable

variability

exists

among

experimental plots due to soil type,

fertility,

moisture,

insects,

diseases, and other sources of variation.

Because this variability

exists,

statistics

are

used

as

a

tool

to

determine

differences

among

hybrids.

The

size

of

chance

variation

is

listed

in

each

table

as

the

L.S.D.

(least

significant

difference)

and

those

hybrids which do not differ by more than the L.S.D.

are

statisti-cally not different.

Those hybrids that do differ by more than the

L.S.D.

are

statistically different.

The

Bayes

L.S.D.

at

the

K-ratio of 50

(approximately .10 level of probability) was used.

The coefficient of variability

(C.V.)

is listed as a general

indicator of population variability;

i t does not,

however,

always

indicate level of precision.

The coefficient of determination (R

2 )

is a better measure of the level of precision because it indicates

the amount of variation accounted for in the trial.

The higher the

R

2

value,

the

more

precise

the

trial.

Thus,

relative

precision

among various trials can be compared.

The standard error of the

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3

reveals how well the true mean was estimated. The formula for the

s.e. is the square root of the error variance divided by the square

root of the number of replications. The error degrees of freedom

(Error d.f.) used to test varieties or hybrids is listed along with

the mean of the test.

Hybrid performance may appear inconsistent among locations

within an area or among years in a particular area, thus it is

important for the reader to examine results from more than one

location or more than one year at a particular location to obtain a

more accurate picture of relative hybrid performance. An effort

has been made to facilitate comparisons among locations and across

years in this report.

The hybrids which do not yield significantly less than the

highest yielder are denoted by an asterisk (*) next to their

yields; the highest yielder is denoted by a double asterisk (**)

next to its yield. The relative performance of a hybrid across

locations within an area can be easily evaluated by going across

the table; those hybrids which are most frequently marked by an

asterisk would be highly desirable. other agronomic

characteris-tics may be as equally important as yield.

Based on extensive study of the data over 10 years, the most

useful data sets to use in choosing early-maturing corn hybrids are

one-year multi-location averages. This one-year average provides

the best prediction of the following year performance while

including the latest released hybrids. For medium-maturing and

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4

the best data set to examine in choosing hybrids.

It is suggested that the grower plant a small number of acres

in a new hybrid when first determining if i t is adapted to his

(9)

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6

COOPERATORS 1997

Bertie County,

Peanut Belt Research station, Lewiston, N.C.

steve Barnes, superintendent.

Guilford County,

John and Lawrence Ward, McLeansville, N.C.

Johnston county,

San Wood Farms, Route 2, Four Oaks, N.C.

Lenoir County,

Lower Coastal Plain Tobacco Research Station,

Kinston, N.C., Sandy Barnes, Superintendent.

Rowan county,

Piedmont Research Station, Salisbury, N.C.,

Raymond Coltrain, Superintendent.

sampson county,

Horticultural Crops Research Station,

Clinton, N.C.,

Sandra Mattox, Superintendent.

Washinaton County,

Tidewater Research Station, Plymouth, N.C.,

John Smith, Superintendent.

Corn silage

Haywood county,

Mountain Research Station, Waynesville, N.C.

Bill Teague, superintendent.

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7

CORN HYBRIDS

The performance of various corn hybrids in different areas of

the

state

depends

on

their

adaptation

to

the

environmental

conditions within the area.

The performance of hybrids across the

state in three geographic regions of North Carolina is reported in

this bulletin.

Entries:

Any

individual

or

firm

may

make

application

for

having

hybrids

tested.

A

fee

is

charged

on

an

entry

basis.

Personnel

of

the

testing

program may

also

include

entries

about

which further information is desired.

Early in January each year,

rules governing the tests for the

ensuing year are distributed to all previous participants and to

those who make inquiry.

Agencies

or

individuals

entering

hybrids

in

the

Official

Variety

Tests

were

requested

to

designate

the

population

and

maturity

range

desired.

Because

of

this,

some

hybrids

may

not

appear to be in the correct maturity group.

Agencies

sponsoring

entries

in

the

1997

tests

are

shown

in

Table 1.

Name,

contact person,

and address of sponsoring agencies

in the

1997

North

Carolina

Corn

Performance

Trials

along

with

designation used

to identify the hybrids.

Agency and

Contact Person

Address

Designation

Aqripro Seeds. Inc.

Al Hoggard

6075 Poplar

Agripro AP 9707

suite 416

AP 9909

(12)

Table 1. (Continued)

8

Agency and Contact Person

AgraTech Seeds, Inc. Scott Williams

Asgrow Seed Company Jim Thompson

Augusta Seed Dennis Rawley

Cargill Seeds Jack Carlson

DeKalb Genetics Corp. Diane Freeman

Address

5559 N. 500W

McCordsville, IN 46055

P. O. Box 109 Matthews, MO 63867

Route 2, Box 16B Mt Solon, VA 22843

P. O. Box 5645

Minneapolis, MN 55440

3100 Sycamore Road DeKalb, IL 60115

Designation

AgraTech 787 ATX 721 725 770 999 ATEX 6714 6890 7657

Asgrow RX 770 RX 897 RX 938 XP 9317

Augusta A2026

Cargill 7770 8011

DeKalb DK 618 641 658 683 706 714 743 EXP 568

Doebler's PA Hybrids Bill Camerer

RR 1, Box 424 Doebler's D746XY Jersey Shore, PA 17740 D858XMOD

Maize Genetic Resources, Inc. James W. Friedrich

10570 Highway 50 North Angier, NC 27501

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Kycoqen Plant sciences

Jimmy Barber

Novartis Seeds. Inc.

Carroll Oakes

IKe Aqri Business

David Conner

Pioneer Hi-Bred

International.

Inc.

Dennis McCoy

Southern States Coop.

Jack Grayson

Terra International

Harold Davis

United

Aqri Products

Thomas Jackson

9

3600 N.Columbia

Plainview TX 79072

P. O.

Box 249

Grifton, NC 28530

PO Box 4429

Winston-Salem, NC 27115

435 E

smith Ave

Winterville, NC 28590

3593 Fuqua Road

Rockfield, KY 42274

P. O.

Box 6000

sioux City,

IA 51102

400 Arbor Lake Drive

Columbia, SC 29223

Mycogen 2595

2677

2689

2815

7250

8460

NK 4394

4575

4714

N6800

N83-R7

N8S11

NX7305

NX7906

Vigoro 4618

5970

Pioneer 3082

3140

3153

3163

3167

31B13

3223

3245

32K61

3310

3394

33V08

33Y09

34A55

SS 726

747

767 797IT

827 XP74010

Terra TR1106

TRl157

TRl167

TR1185

TR702

(14)

10

Field Plot Technique: Tests were planted at seven locations across the state. The various locations are shown in Figure 1. In the

Tidewater two tests were located in Washington County--one on an

organic soil (HM) and one on a mineral soil. In the Coastal Plain

region, four tests were conducted in Bertie, Johnston, Lenoir, and

Sampson counties. Two tests were located in Sampson county; one was

planted earlier than normal and served as a test for seedling vigor,

and one was planted at a date more typical of corn planting for the

area. In the Piedmont, tests were located in Guilford and Rowan

counties; the Rowan test was no-tilled. Early-maturing corn hybrids

(less than 115 days to maturity) are included in the Coastal Plain and

Tidewater areas of the state. The medium maturing (approximately 115

to 125 days to maturity) and the late-maturing (over 125 days to

maturity) hybrids are included in all trials. It is important to

remember that these are loose groupings, i.e some hybrids may easily

fit into either of two maturity groups. Table 2 lists the cultural

practices used and Table 3 lists the soil tests results. In field

design a randomized block was used on all maturity groups. Each plot

consisted of two rows 22 feet long with a 30, 38, or 36" row width.

The two rows were harvested for yield. Alley width was six feet.

In 1997, all tests were planted to a stand at a rate of 110% of

the desired plant population. Actual plant populations are reported

in the across locations tables.

Seasonal Conditions: Planting was on time for most locations in 1997 (Table 2). The seedling vigor test was planted March 12 with

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11

stress so that the corn hybrids could not be rated for the trait. Cool

weather was experienced the second week of April delaying emergence

(see accompanying graphs). Cool weather continued until the third

week of June, when more typical temperatures were measured; this early

cool-weather resulted in few heat units (GDD) and delayed plant

growth. Rainfall was below normal for May, and June during

pollination at most locations. Lack of adequate rainfall resulted in

the complete loss of the test at Sampson county. Harvesting was on

time.

Data: Data were collected on yield, moisture, lodging, ear height, and stands. All plot yields were adjusted to 15.5% moisture.

Lodging percentage was determined by observing all plants broken below

the ear or leaning more than 45 degrees. Ear height was determined by

measuring the distance from the ground to the node where the ear is

attached to the stalk. stand counts were reported in plants/acre.

·Results:. Data for the Tidewater region are reported in Tables

4-12. These include mUlti-year data across soil types by maturity

as well as 1997 data. Data listed HM indicate the test was on an

organic soil. Yields were about average and varied little by

maturity.. Bear damage was evident in the test on organic soil and

lodging data are not reported since true lodging and bear lodging

could not be distinguished.

Data for the Coastal Plain region include three locations and

are reported in Tables 13-21. These include mUlti-year data across

locations by maturity as well as 1997 data. Yields tended to be

(16)

12

hybrids.

Data for the Piedmont region include two locations and two

maturity groups and are reported in Tables 22-27. These include

mUlti-year data across locations by maturity as well as 1997 data.

Yields tended to be higher for medium-maturing hybrids than the

later-maturing hybrids as a group. Low yields at Rowan county are

reflective of the lack of adequate rainfall in late June and early

(17)

ly Weathrtie Co. Weekly Weather Data

(gust 1997)

(April - August 1997)

- - - 120

I I

6 1in Temp

_

Rainfall

I

1--

Max Temp

"*

Min Temp

_

Rainfall

I

5

1

20

80

~

-,

/~

\ /

~4

:D

~.

:::J t-'

-...oh w

OJ

60 -1

r-;>

_Y

-, J \

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...

:::J

o

:::T

CD

40 -

I

»:

~

_III

_J--2

en

~ """"-'"

100 o

-

It_ _ _ _

--

F!§iiWl-

- CN'MmiID rB - - - - 1M - I

0 6 23 30

7 14 21 28

4 11

7 14 21 28

5 12 19 26

2 9 16 23 30

7 14 21 28

4 11 18 25 31

(18)

.ly

Weathloir

Co.

Weekly

Weather Data

igust 1997)

(April - August 1997)

o

5 7 142128

5 12 1926

2 9 1623 30

7 142128

4 11 1825 31

April May June July August

o

80 -i

"V

"

~4

:0

~.

:J ~

...-oh ~

Ol

60 ~

~

"'/-

\ .,A1

-3

_--::::::

:J

o

:::J'" CD

40 ~

~

_I

_-

I-

2

""""-"

en

100 6 23 30

7 14 21 28

4 11

une July A

(19)

ely

Weatlwan Co. Weekly Weather Data

19Ust

1997)

(April - August

1997)

5

100 I--Max Temp ... Min Temp

• Rainfall

I

4

80 \A

~

3

~~.

~ I--'

60 ~

1Il

/

~/

-,

/ \

I

~

\Jl

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~

-

2

(J

40 ~

/

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111 I

II

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CD

en

' - /

20

_J I- I- 1l1li l1li r : = I I- I-

1 o

"fiIp l I~I I.~ '1111 I~I"I- I"~ ,& Fjf5ii!fJ1-

I

.

l1li 1

0 5 23 30

7 14 21 28

4 11

]

7 14 21 28

5 12 19 26

2 9 16 23 30

7 14 21 28

4 11 18 25 31

(20)

kly Weatl1pson Co. Weekly Weather Data

gust 1997)

(April - August 1997)

7 -

6 -

5 ?O

~

~.

-

4

~ I-'

~

(J'\

~ ~

-

3

~0

~

(D ir: <:»

2

1 - Max Temp

... Min Temp

• Rainfall

20

40

60

80

100 o

I

-

um:m-

__

m::mrM1 IRlrml_ c::=o I.I IMJ "'~I 1M' "...,1_ -'1

0

23 30 7 14 21 28 4 11 Il 7 14 21 28 5 12 19 26 2 9 16 23 30 7 14 21 28 4 11 18 25 31

nTemp

- - - 1 1 2 0 '

i

(21)

eekly Weatlshington Co. Weekly Weather Data

gust 1997)

(April-August 1997)

::D

~. :J t--"

~ ---.J

OJ

--:::::

:J

0

:::r

CD

en

...

1 -

a

7 14 21 28 5 12 19 26 2 9 16 23 30 7 14 21 28 4 11 18 25 31

April

May

June

July

August

i i

7

20

40

60

80

100

,23 30 7 14 21 28 4 11 1

(22)

Table 2. Cultural practices used at each corn test location - 1997.

---Fertilizer Date Date

Location Lbs/A Sidedressing of of Soil

by County and Grade Lbs N/A Planting Harvest Type

Bertie 100 126 April

a

September 3-E Goldsboro/

18-46-0 September

a-M,L

Lynchburg

sandy loam

Guilford 450 140 April 15 September 17 Enon fine

10-20-20 sandy loam

Johnston 200 150 April 3 September 15 Norfolk ~

co

0-0-60 sandy loam

Lenoir 300 165 April 7 September 9 Goldsboro

10-20-20 sandy loam

Rowan 440 120 April 10 September 16 Hiwassee

10-20-20 clay

Washinqton 200 163 April 11 September 10 Portsmouth

0-0-60 fine sandy

loam

Washinqton HM 200 163 April 11 September 10 Cape Fear

(23)

Table 3.

Soil test results, corn - 1997.

Location

by County

HM % W-V

CEC

as

% Ac pH

P-I

K-I

Ca

% Mg %

Mn-I

Zn-I

Cu-I

Bertie

1.02

1.42

6.2

90

0.6

6.4

48

65

65.0

20.0

35

56

129

Guilford

0.51

1.23

7.8

87

1.0

6.5

156

110

55.0

25.0

867

399

204

Johnston

1.43

1.29

5.2

67

1.7

5.9

65

74

45.0

15.0

120

110

59

I--l

\.0

Lenoir

1.08

1.39

4.3

72

1.2

5.7

382

73

52.0

11.0

36

47

50

Rowan

0.22

1.16

6.6

83

1.1

5.9

47

97

52.0

24.0 1525

56

124

Washington

3.37

1.27

7.9

77

1.8

5.7

93

74

55.0

18.0

43

36

50

(24)

20

TABLE 4. DATA COMBINED OVER LOCATIONS FOR EARLY-MATURING CORN HYBRIDS IN TIDEWATER AREA.

HYBRID OR BRAND-HYBRID

YIELD BUjA

MOISTURE LODGING

+

EAR HT , IN

PLANT POPULATION THREE YEAR AVERAGE - 1995, 1996, 1997

Pioneer 3245 152 0.215 1 38 24,568 Pioneer 3394 146 0.192 1 40 24,797 Hyperformer HS 9843 142 0.215 0 46 23,780 AgraTech 787 137 0.218 0 44 25,345 Dyna-Gro 5510A 133 0.240 1 40 24,020 NK 4394 128 0.186 1 39 25,435 Mycogen 7250 126 0.209 0 36 22,355

TWO YEAR AVERAGE - 1996, 1997

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21

TABLE 5. DATA COMBINED OVER SOIL TYPES FOR TIDEWATER EARLY-MATURING CORN HYBRIDS - 1997.

HYBRID OR YIELD MOISTURE LODGING

t

EAR HT PLANT BRAND-HYBRID BUIA % IN POPULATION

Pioneer 3223 181 0.212 0 42 28,345 Pioneer 3394 169 0.186 0 36 27,658 Augusta A2026 168 0.212 0 45 28,614 Pioneer 33V08 167 0.192 0 35 27,986 AgraTech ATX770 167 0.209 0 45 25,594 Agripro AP9707 164 0.205 0 33 24,697 Pioneer 33Y09 164 0.197 0 39 26,940 Pioneer 32K61 162 0.194 0 33 27,747 Dyna-Gro 5510A 162 0.247 0 36 27,658 Hyperformer HS 9843 160 0.214 0 40 24,847 5S 747 159 0.208 0 35 25,923 +NK X7906 159 0.209 0 34 26,462 Asgrow RX770 158 0.202 0 31 25,475 Hyperformer HY9646 157 0.211 0 44 25,146 Pioneer 3245 157 0.211 0 33 26,790 5S 767 155 0.199 0 29 26,432 AgraTech 787 155 0.216 0 40 26,940 Doebler's D746XY 152 0.196 0 35 25,535 Cargill 7770 152 0.201 0 34 28,166 Pioneer 34A55 151 0.190 0 30 27,598 +NK X7305 151 0.200 0 39 24,877 Terra TR1106 150 0.200 0 36 27,687 Mycogen 7250 149 0.206 0 30 26,192 Dekalb DK618 144 0.179 0 30 25,953 Agratech ATX721 141 0.197 0 35 27,060 +AgraTech ATEX7657 139 0.219 0 34 26,133 NK 4394 132 0.181 0 31 27,747 Mycogen 2689 131 0.187 0 37 25,445 Mycogen 2677 123 0.184 0 30 24,369 Mycogen 2595 120 0.179 0 29 23,531 +EXPERIMENTALS. SEED OF THESE HYBRIDS MAY OR MAY NOT BE AVAILABLE IN 1998 AND MAY ALSO HAVE A DIFFERENT DESIGNATION.

(26)

22

TABLE 6. INDIVIDUAL SOIL TYPE YIELD DATA FOR TIDEWATER EARLY-MATURING CORN HYBRIDS - 1997.

HYBRID OR BRAND-HYBRID Pioneer 3223 Pioneer 3394 Augusta A2026 Pioneer 33V08 AgraTech ATX770 Agripro AP9707 Pioneer 33Y09 Pioneer 32K61 Dyna-Gro 5510A Hyperformer HS 9843 55 747 +NK X7906 Asgrow RX770 Hyperformer HY9646 Pioneer 3245 SS 767 AgraTech 787 Doebler's D746XY Cargill 7770 Pioneer 34A55 +NK X7305 Terra TR1106 Myccgen 7250 Dekalb DK618 Agratech ATX721 +AgraTech ATEX7657 NK 4394 Mycogen 2689 Mycogen 2677 Mycogen 2595 MEAN C.V. (%) BLSD (K-50) S.E.

R2 (%)

(27)

23

TABLE 7. DATA COMBINED OVER LOCATIONS FOR MEDIUM-MATURING CORN HYBRIDS IN TIDEWATER AREA.

YIELD BUIA

MOISTURE LODGING

-t

%

EAR HT IN

pioneer 3163 Mycogen 8460 Pioneer 3140

Hyperformer HY 9a99V

132 129 126 120 0.194 0.211 0.202 0.206 7 13 3 15 40 44 49 45 22,913 22,674 22,046 24,388 TWO YEAR AVERAGE - 1996, 1997

Terra TRl167 Pioneer 3153 Dyna-Gro 5516 Terra TRl157

Hyperformer HY 9919V Pioneer 3163

NK 4575

Pioneer 3140 Mycogen 8460

Hyperformer HY 9a99V DynaGro 5670 157 156 154 152 148 147 147 145 141 133 123 0.194 0.201 0.196 0.197 0.211 0.206 0.189 0.205 0.220 0.214 0.215 7 8 5 6 6 11 3 4 19 23 21 47 44 44 48 44 41 41 51 45 45 49 26,372 24,264 25,280 26,820 23,830 24,877 24,249 24,055 24,010 24,967 24,443

(28)

24

TABLE 8. DATA COMBINED OVER SOIL TYPES FOR TIDEWATER MEDIUM-MATURING CORN HYBRIDS - 1997.

HYBRID OR YIELD MOISTURE LODGINGt EAR HT PLANT BRAND-HYBRID BulA % IN POPULATION

Pioneer 31813 174 0.225 0 44 26,013 Dyna-Gro 5516 165 0.222 0 42 27,299 Pioneer 3153 163 0.225 0 40 25,834 Mycogen 8460 162 0.247 0 39 23,800 Hyperformer HY 9919V 162 0.237 0 36 24,996 Terra TRl157 158 0.221 0 45 27,777 Terra TR1167 158 0.217 0 41 26,671 Pioneer 3140 158 0.235 0 44 24,697 +Asgrow XP9317 158 0.241 0 40 25,086 Doebler's D858X MOD 157 0.228 0 39 26,342 +Vigoro 5970 157 0.229 0 44 23,920 Dekalb DK658 156 0.197 0 37 26,701 DynaGro 5570 154 0.216 0 38 22,515 Hyperformer HY 9899V 153 0.240 0 38 25,505 Agripro AP9909 153 0.231 0 41 24,757 NK 4575 152 0.215 0 37 24,847 MGR 621 150 0.229 0 44 22,575 Asgrow RX897 149 0.223 0 41 23,202 Pioneer 3163 148 0.237 0 37 25,445 Dekalb DK641 148 0.199 0 38 26,432 DynaGro 5670 144 0.239 1 40 24,967 Cargill 8011 141 0.208 0 32 26,043 Mycogen 2815 141 0.204 0 25 25,983 MGR 594 133 0.209 0 34 23,651 +EXPERIMENTALS. SEED OF THESE HYBRIDS MAY OR MAY NOT BE AVAILABLE

(29)

25 TABLE 9. INDIVIDUAL SOIL TYPE YIELD DATA FOR TIDEWATER

MEDIUM-MATURING CORN HYBRIDS - 1997.

HYBRID OR

BRAND-HYBRID

Pioneer 31B13

Dyna-Gro 5516

Pioneer 3153

Mycogen 8460

Hyperformer HY 9919V

Terra TR1157

Terra TR1167

Pioneer 3140

+Asgrow XP9317

Doebler's D858X MOD

+Vigoro 5970

Dekalb DK658

DynaGro 5570

Hyperformer HY 9899V

Agripro AP9909

NK 4575

MGR 621

Asgrow RX897

Pioneer 3163

Dekalb DK641

DynaGro 5670

Cargill 8011

Mycogen 2815

MGR 594

MEAN

C.V.

(%)

BLSD (K-50)

S.E.

R2

(%)

ERROR D.F.

MINERAL

SOIL

BUIA

183**

177*

178*

160 170*

177*

164 174*

169

162

169 176*

156

162

158

157 173*

154

158

146

143

151

164

7.5

14

5.5

72.8

88 ORGANIC

SOIL

BUIA

165**

152*

148*

164*

153*

140*

151*

142*

146*

153*

145*

136 151*

144*

145*

141*

142*

123 141*

130

137

138

115

144

12.8

27

8.2

35.7

92

MEAN

BUIA

174**

165*

163*

162*

158*

157*

156*

154

153

152

150

149

148

144

141

133

154

5.8

20

4.0

82.5

23

(30)

26

TABLE 10. DATA COMBINED OVER LOCATIONS FOR LATE-MATURING CORN HYBRIDS IN TIDEWATER AREA.

YIELD BUIA

MOISTURE LODGING

t

EAR HT

% IN

NK NBB11 129 0.216 9 40 23,257

Hyperformer HS 9977 124 0.221 6 41 24,123 Pioneer 3167 114 0.227 14 3B 23,186

Pioneer 3082 153 0.264 7 44 24,742 NK N8B1l 149 0.236 13 40 23,927 Hyperformer HS 9977 146 0.243 9 43 24,658 Pioneer 3167 131 0.255 20 39 25,166

(31)

27

TABLE 11. DATA COMBINED OVER SOIL TYPES FOR TIDEWATER LATE-MATURING CORN HYBRIDS - 1997.

HYBRID OR YIELD MOISTURE LODGING

t

EAR HT PLANT BRAND-HYBRID BUIA % IN POPULATION NK N8811 160 0.276 1 34 25,365 Terra TR702 152 0.274 1 36 29,427 Pioneer 3082 150 0.324 3 39 25,241 Hyperformer HS 9977 147 0.291 2 36 25,S15 pioneer 3167 138 0.305 2 34 26,860

tNo LODGING DATA WERE REPORTED FOR THE ORGANIC SOIL TEST.

TABLE 12. INDIVIDUAL SOIL TYPE YIELD DATA FOR

TIDEWATER LATE-MATURING CORN HYBRIDS - 1997. HYBRID OR

BRAND-HYBRID

NK N8811 Terra TR702 Pioneer 3082 Hyperformer HS 9977 Pioneer 3167

MEAN

c.v.

(%)

BLSD (K-SO)

S.E.

R2 (%)

ERROR D.F.

MINERAL SOIL BUIA 165** 151* 157* 145 156* 155 7.7 14 4.8 49.6 22

ORGANIC SOIL BUIA lS4** 152* 143* 149* 121 144 13.8 23 8.1 44.8 20

MEAN BUIA 160** 152* 150* 147 138 149 7.3 12 4.5 61.8

4

(32)

28

TABLE 13. DATA COMBINED OVER LOCATIONS FOR EARLY-MATURING

CORN HYBRIDS IN THE COASTAL PLAINS AREA.

HYBRID OR BRAND-HYBRID YIELD BUIA MOISTURE LODGING %

EAR HT PLANT IN POPULATION

THREE YEAR AVERAGE - 1995, 1996, 1997

Hyperformer HS 9843 AgraTech 787 Pioneer 3245 Pioneer 3394 Dyna-Gro 5510A 120 118 111 111 109 0.180 0.177 0.168 0.160 0.187 1 1 1

o

1 43 41 38 37 36 23,135 24,391 23,703 23,412 22,089

(33)

29

TABLE 14. DATA COMBINED OVER COASTAL PLAINS LOCATIONS FOR EARLY-MATURING CORN HYBRIDS - 1997.

HYBRID OR YIELD MOISTURE LODGING EAR HT PLANT

BRAND-HYBRID BUIA % IN POPULATION

Hyperformer HS 9843 100 0.187 0 33 23,940

+NK X7305 98 0.188 1 32 22,804

Hyperformer HY9646 96 0.184 0 35 23,462

Pioneer 3223 95 0.185 1 30 25,993

Mycogen 7250 94 0.183 1 28 24,418

AgraTech ATX725 93 0.181 0 26 25,634

AgraTech ATX770 93 0.183 0 34 24,159

55 747 93 0.185 2 30 25,056

Pioneer 32K61 91 0.179 1 30 27,010

AgraTech 787 91 0.192 1 31 26,511

Agripro AP9707 91 0.182 1 31 24,179

Pioneer 3394 91 0.165 0 28 27,648

Dyna-Gro 5510A 89 0.200 1 29 24,897

55 726 89 0.173 1 28 24,897

Cargill 7770 87 0.181 0 30 26,950

Pioneer 3245 87 0.170 1 30 26,631

+NK X7906 86 0.182 0 29 25,654

NK N6800 86 0.177 0 30 25,913

Terra TR1106 78 0.174 1 27 25,953

AgraTech ATX721 75 0.171 0 28 26,990

(34)

30

TABLE 15. INDIVIDUAL LOCATION DATA FOR COASTAL PLAINS

EARLY-MATURING CORN HYBRIDS - 1997.

HYBRID OR

BRAND-HYBRID

Hyperformer HS 9843

+NK X7305

Hyperforrner HY9646

Pioneer 3223

Mycogen 7250

AgraTech ATX725

AgraTech ATX770

SS 747

AgraTech 787

Agripro AP9707

Pioneer 3394

Pioneer 32K61

Dyna-Gro 5510A

SS 726

Cargill 7770

Pioneer 3245

+NK X7906

NK N6800

Terra TR1106

AgraTech ATX721

Pioneer 34A55

T

Pioneer 33Y09

I

Pioneer 33V08

I

MEAN

C.V.

(%)

BLSD (K-50)

S.E.

R2 (%)

ERROR D.F.

JOHNSTON

BUjA

90**

85*

87*

85*

88*

83*

85*

88*

73

71

73

75 81*

66

74

65

67

70

63

60

76

14.9

13

5.0

66.3

84 LENOIR

BUjA

144*

142

141

138

140

136

136 144*

148*

141

136

135

132

133

135

134

125

114

131 155**

144*

136

7.7

12

4.7

64.2

84 BERTIE

BUjA

65*

67**

60*

63*

55*

61*

57*

46 52*

61*

64*

63*

55*

66*

53*

60*

58*

62*

58*

53*

56*

65*

67**

60

16.9

17

4.5

46.6

84 MEAN

BUjA

100**

98*

96*

95*

94*

93*

91*

89

87

86

78

75

92

7.2

11

1.7

97.7

41

(35)

31

TABLE 16. DATA COMBINED OVER LOCATIONS FOR MEDIUM-MATURING CORN HYBRIDS IN THE COASTAL PLAINS AREA.

HYBRID OR YIELD MOISTURE LODGING EAR HT PLANT BRAND-HYBRID BUIA % IN POPULATION

DeKalb DK714 128 0.189 1 40 24,668 Mycogen 8460 123 0.197 5 40 21,962 55 827 122 0.188 1 40 24,570 DeKalb DK683 122 0.184 1 40 23,785 DeKalb DK743 121 0.202 2 41 23,614 pioneer 3163 120 0.176 2 39 21,491 Hyperformer HY 9899V 120 0.195 8 41 23,464 DeKalb DK706 119 0.193 3 46 24,144 Pioneer 3140 110 0.188 2 40 20,818

(36)

32

TABLE 17. DATA COMBINED OVER COASTAL PLAINS LOCATIONS FOR MEDIUM-MATURING CORN HYBRIDS - 1997.

BRAND-HYBRID BUjA % IN POPULATION

DynaGro 5516 114 0.182 0 35 27,608

Pioneer 3140 111 0.191 2 34 23,920

+Dekalb EXP568 111 0.180 1 37 25,315

Terra TRl185 111 0.196 2 33 26,751

Asgrow RX938 110 0.207 0 36 25,774

+Vigoro 5970 110 0.181 1 39 22,943

Mycogen 8460 110 0.193 2 35 22,943

DeKalb DK743 110 0.204 3 32 23,721

DeKalb DK683 109 0.185 1 31 23,840

DynaGro 5670 109 0.195 4 33 24,757

SS 827 109 0.184 1 33 24,837

Asgrow RX897 108 0.190 0 35 22,365

Terra TRl157 107 0.180 0 38 24,378

DeKalb DK714 107 0.188 1 32 25,634

Agripro AP9909 107 0.193 1 36 23,960

Pioneer 3163 106 0.172 3 31 25,116

Hyperformer HY 9899V 106 0.189 5 29 24,996

Pioneer 3153 106 0.179 1 34 25,176

SS 828 105 0.177 1 30 25,315

+AgraTech ATEX6890 104 0.207 1 33 23,242

+Asgrow XP9317 104 0.187 1 33 23,501

DynaGro 5570 102 0.182 0 36 20,372

DeKalb DK706 102 0.191 3 36 24,797

Terra TR1167 100 0.187 0 34 24,677

+Vigoro 4618 99 0.205 1 28 19,355

Hyperformer HY9919V 98 0.188 1 28 24,538

MGR 621 98 0.188 3 33 20,751

MGR 633 93 0.197 0 35 18,478

+AgraTech ATEX6714 89 0.177 0 26 23,741

MGR 594 89 0.182 0 31 22,006

Mycogen 2815 88 0.169 0 27 24,060

Cargill 8011 85 0.170 0 29 22,844

MGR 632 81 0.196 3 33 20,192

SS 797 IT 81 0.174 1 28 24,777

(37)

33

TABLE 18. INDIVIDUAL LOCATION DATA FOR COASTAL PLAIN MEDIUM-MATURING CORN HYBRIDS - 1997. HYBRID OR BRAND-HYBRID JOHNSTON LENOIR BUIA BUIA BERTIE BUIA MEAN BUIA DynaGro 5516 Pioneer 3140 +Dekalb EXP568 Terra TRl185 Asgrow RX938 +Vigoro 5970 Mycogen 8460 DeKalb DK743 DeKalb DK683 DynaGro 5670 SS 827 Asgrow RX897 Terra TRl157 DeKalb DK714 Agr ipro AP990_9 Pioneer 3163

Hyperformer HY 9899V Pioneer 3153 SS 828 +AgraTech ATEX6890 +Asgrow XP9317 DynaGro 5570 DeKalb DK706 Terra TRl167 +Vigoro 4618 Hyperformer HY9919V MGR 621 MGR 633 +AgraTech ATEX6714 MGR 594 Mycogen 2815 Cargill 8011 MGR 632 SS 797 IT

(38)

34

TABLE 19. DATA COMBINED OVER LOCATIONS FOR LATE-MATURING CORN HYBRIDS IN COASTAL PLAINS AREA.

Hyperformer HS 9977 120 0.208 1 38 22,560

NK N8811 120 0.204 0 38 22,044

NK 4714 119 0.191 0 45 23,277

Pioneer 3082 117 0.226 2 42 21,902

Pioneer 3167 112 0.210 1 38 21,864

MGR 814 112 0.203 2 42 18,800

Pioneer 3167 99 0.208 1 35 24,847

NK N8811 99 0.202 1 35 22,903

NK 4714 96 0.197 1 41 24,428

MGR 814 94 0.201 4 38 19,555

MGR 943 94 0.194 3 42 18,987

Hyperformer HS 9977 93 0.203 1 35 23,277

Pioneer 3082 87 0.213 3 38 24,742

TABLE 20. DATA COMBINED OVER COASTAL PLAINS LOCATIONS FOR LATE-MATURING CORN HYBRIDS - 1997.

NK 4714 110 0.207 0 35 24,259

Pioneer 3167 109 0.218 1 32 25,156

NK N8811 107 0.207 0 30 22,624

Terra TR702 105 0.205 0 29 28,046

Hyperformer HS 9977 103 0.210 0 32 22,983

MGR 943 101 0.199 3 37 18,697

AgraTech ATX999 100 0.218 1 31 23,541

MGR 814 99 0.208 1 33 19,754

(39)

35 TABLE

21. INDIVIDUAL LOCATION DATA FOR COASTAL PLAIN

LATE-MATURING CORN HYBRIDS -

1997.

HYBRID OR

BRAND-HYBRID

JOHNSTON

LENOIR

BUIA

BERTIE

BUIA

MEANS

BUIA

NK 4714

Pioneer 3167

NK N8811

Terra TR702

Hyperforrner

HS

9977

MGR

943 AgraTech

ATX999

MGR

814 Pioneer 3082

MEAN

c.v.

(%)

BLSD

(K-50)

S.E.

R

2

(%)

ERROR D.F.

100*

96*

100*

93*

103**

99*

85*

82*

79*

93

18.2

26

7.6

71.8

31

144 154**

135 150*

141

124 146*

141

136

141

6.1

10

3.9

78.2

30 85**

78*

85**

72

65 79*

69 74*

69

7S

12.6

12

4.2

57.0

30 110**

109*

107*

105*

103*

101*

100*

99*

95*

103

8.0

17

2.1

95.2

16

(40)

36

TABLE 22. DATA COMBINED OVER LOCATIONS FOR MEDIUM-MATURING CORN HYBRIDS IN THE PIEDMONT AREA.

BRAND-HYBRID BulA % IN POPULATION

DeKalb DK714 117 0.203 2 52 24,797

Hyperforrner HY 9899V 116 0.216 2 54 23,372

DeKalb DK743 113 0.217 3 51 24,279

DeKalb DK706 110 0.205 2 53 23,930

Pioneer 3163 105 0.197 3 47 21,707

Pioneer 3140 105 0.203 5 50 21,040

Pioneer 3310 104 0.189 3 48 22,953

NK N83-R7 103 0.206 2 47 22,714

SS 827 103 0.209 2 43 24,289

DeKalb DK683 100 0.196 1 47 23,342

Hyperforrner HY 9899V 104 0.208 2 53 24,548

Pioneer 3140 100 0.196 5 50 23,427

DeKalb DK714 100 0.196 2 51 25,206

Pioneer 3223 96 0.186 2 52 25,834

DeKalb DK706 95 0.203 3 50 24,309

Pioneer 3163 94 0.187 4 47 24,443

Pioneer 3153 93 0.189 4 49 24,802

DeKalb DK743 93 0.209 4 49 25,385

Terra TR1185 91 0.205 3 49 25,699

Terra TR1167 91 0.195 2 51 26,387

SS 827 89 0.205 3 42 25,026

DeKalb DK683 88 0.193 2 44 24,070

Hyperforrner HY9919V 88 0.204 2 41 22,589

Pioneer 3310 87 0.187 4 46 24,593

NK N83-R7 87 0.204 2 45 23,785

(41)

37

TABLE 23. DATA COMBINED OVER PIEDMONT LOCATIONS FOR MEDIUM-MATURING CORN HYBRIDS - 1997.

(42)

38

TABLE 24. INDIVIDUAL LOCATION DATA FOR PIEDMONT MEDIUM-MATURING CORN HYBRIDS - 1997. HYBRID OR BRAND-HYBRID Pioneer 3223 +Vigoro 5970 +Asgrow XP9317 Pioneer 3140 DeKalb DK714

Hyperformer HY 9899V +Dekalb EXP568 Pioneer 3163 DeKalb DK743 Pioneer 3153 Pioneer 33Y09 Hyperformer HY9919V DynaGro 5570 Terra TRl185 +NK X7906 Cargill 7770 DeKalb DK706 NK N83-R7 Pioneer 32K61 Pioneer 3310 DeKalb DK683 AgraTech ATX721 Terra TRl167 +Vigoro 4618 AgraTech 787 AgraTech ATX770 Terra TRl157 SS 827 +NK X7305 SS 747 Dekalb DK618 Cargill 8011 SS 828 SS 797 IT Pioneer 31B13 I

GUILFORD BUIA 121** 108* 111* 120* 114* 119* 98* 119* 103* 104* 94* 105* 103* 90* 100* 105* 101* 90* 93* 85 89* 104* 96* 96* 92* 87 90* 91* 77 83 68 95* 85 62 102* ROWAN BUIA 77* 86** 82* 69 73 66 85* 63 68 67 74 60 61 73 63 57 60 66 63 70 65 47 55 51 53 59 54 54 59 SO 64 36 42 48 MEAN BUIA 99** 97* 96* 95* 93* 92* 92* 91* 85* 85* 84* 82* 82* 81* 81* 81* 80* 78* 78* 77 77 76 75 73 73 73 72 72 68 66 66 65 63 55

MEAN 97 62 80

C.V. (%) 23.2 16.1 12.4 BLSD (K-50) 33 10 22

S.E. 10.0 4.5 4.4

(43)

39

TABLE 25. DATA COMBINED OVER LOCATIONS FOR LATE-MATURING CORN HYBRIDS IN PIEDMONT AREA.

HYBRID OR BRAND-HYBRID YIELD BUIA MOISTURE LODGING % EAR HT IN PLANT POPULATION THREE YEAR AVERAGE - 1995, 1996, 1997

Pioneer 3082 Pioneer 3167 NK 4714 82 80 79 0.243 0.243 0.227 2 1 1 49 45 50 21,968 21,511 22,766 TWO YEAR AVERAGE - 1996, 1997

Pioneer 3082 Pioneer 3167 NK 4714 76 74 70 0.242 0.232 0.234 2 1 1 46 44 49 23,848 24,403 23,653 TABLE 26. DATA COMBINED OVER PIEDMONT LOCATIONS FOR

LATE-MATURING CORN HYBRIDS - 1997. HYBRID OR BRAND-HYBRID Terra TR702 Pioneer 3167 Pioneer 3082 NK 4714 YIELD BUIA 86 74 72 68 MOISTURE 0.229 0.249 0.253 0.257 LODGING %

o

EAR HT IN 36 37 42 43 PLANT POPULATION 27,807 24,871 24,409 23,077 TABLE 27. INDIVIDUAL LOCATION YIELD DATA FOR PIEDMONT

LATE-MATURING CORN HYBRIDS- 1997.

HYBRID OR GUILFORD ROWAN MEAN BRAND-HYBRID BUIA BUIA BUIA

Terra TR702 116** 56 86** Pioneer 3167 82 66** 74* Pioneer 3082 91 54 72*

NK 4714 74 62* 68

MEAN 90 59 75

C.V. (%) 21.7 11.3 20.7

BLSD (K-50) 23 8 18

S.E. 8.0 2.7 6.3

R2 (%) 78.9 88.5 76.2

ERROR D.F. 11 12 3

(44)

40

CORN SILAGE

silage

is

an

important

part

of

the

beef

and

dairy

cattle

industry

in

North

Carolina,

particularly

in

the

Piedmont

and

Mountain regions.

The report presents the results of the North Carolina Official

Corn Silage trials for the 1997 season.

Entries:

Any

individual

or

firm

may

make

application

for

having hybrids tested.

Personnel of the testing program may also

include entries about which further information is desired.

Early in January each year,

rules governing the tests for the

ensuing year are distributed to all

previous participants and to

those who make inquiry.

Agencies

sponsoring

entries

in

the

1997

tests

are

shown

in

Table 28.

Name, contact person, and address of sponsoring

agencies in the 1997 North Carolina Corn Silage

Performance Trials along with designation used to

identify the hybrids in the trials.

Name, Contact Person

and Address

Aqripro Seeds, Inc.

Al Hoggard

2067 Poplar, suite 416

Memphis, TN

38119

Aqritech Seed, Inc.

Scott Williams

5559 N 500 West

McCordsville,

IN 46055

Hybrid

Designation

Agripro AP 9909

Hyperformer HS 9977

HY9899V

HY9919V

(45)

41

Table 28. (Continued).

Name, Contact Person and Address

DeKalb Genetics Corp. Diane Freeman

3100 Sycamore Road DeKalb, IL 60115

Doebler's PA Hybrids W. R. Camerer

RR1, Box 424

Jersey Shore PA 17740

Maize Genetic Resources, Inc. James Friedrich

10570 Highway 50 North Angier, NC 27501

Mycoqen Plant Sciences Jimmy Barber

3600 N. Columbia Plainview, Texas 79072

Novartis Seeds, Inc. Carroll Oakes

P. O. Box 249 Grifton, NC 28530

Pioneer Hi-Bred International, Inc. Dennis McCoy

435 E. smith Ave. Winterville, NC 28590

Southern states Jack Grayson 3593 Fuqua Road Rockfield, KY 42274

Terra

Harold Davis PO Box 6000 600 4t h street

Sioux City, IA 51102

Hybrid Designation

DEKALB DK 687 7205 743 EXP 568

D 858XMOD

MGR621 812 942

Mycogen TMF 113

NK McNair 508 NK N 4714 N 4868 X 7445

Pioneer 3082 3085 3130 3156 3172 32K61 3310

SS 827 897 943 XP74010

(46)

42 Field Plot Technique:

One test was located in Haywood County

in a creek bottom and one in Rowan County on an upland soil planted

no-till on 30" rows.

Plots

consisted

of

two

rows

with

both

rows

harvested.

Six

replicates

at

Haywood

and

Rowan

were

planted

in

a

randomized,

complete

block

design.

alleys.

Plots

were

22 feet

long

with

six

foot

All plots were over-planted and later thinned to the desired

stand.

Table 29

lists the cultural practices used;

. Table 30

lists

soil test results.

Table 29.

Cultural practices used on the corn silage tests - 1997.

Fertilizer

Date

Location

lbs/A and

Soil

of

by County

Grade

Type

Planting

Harvest

Haywood

625 Codorus clayey

May 14

September 23

26-10-7

loam

200lb N/A

Sidedressing

Rowan

440 Hiwassee

April 10

August 20

10-20-20

Clay

(47)

43

Table 30. Soil test results, corn silage - 1997.

Location

by county HM% W-V CEC BS % Ac pH P-I

Haywood 1.02 1.07 8.8 83 1.5 5.5 60

Rowan 0.18 1.15 7.1 80 1.4 5.9 44

-

- -

-

- -

-

-Table 30. (Continued).

Location by County

Haywood

Rowan

K-I

152

115

Ca

%

56.0

51.0

Mg

%

18.0

21.0

MN-I

728

1551

Zn-I

55

63

Cu-I

140

148

Seasonal Conditions: Planting was on time for both locations (Table 29). Rainfall was below norma~ in late June, and most of the month of August.

was on time at Haywood.

Harvest was later than normal at Rowan but

Data: Data were collected on percent dry matter at harvest, dry matter yield, silage yield, plant population and plant height.

Results: Tables 31 and 32 reveal the two and three year averages. Table 33 lists the 1997 data averaged across locations

while Tables 34 and 35 show individual location data. Multi-year

averages by location are shown in Tables 36 and 37. The

mUltiple-year averages provide a more accurate picture of true performance

(48)

.ly

Weathfood Co. Weekly Weather Data

iber 1997)

(May - September 1997)

remp

I!III

Rainfall 1

I...

Max

Temp ....-

Min

Temp

I!III

Rainfall 1

_-

₆

28 4 11 18 25 31

7 1421

5 12 1926

2 9 1623 30

7 142128

August

Septemb

May

June

July

1 -

-

0 7 14 21 28

September

:D

Ol

S·

--h

Ol +'+'

..-...

:J

o

:::J

CD

(49)

ly Weath6'an Co. Weekly Weather Data

gust 1997)

(April - August 1997)

r - - - , - - ,

5

80 1\

...

11 1/

\ /

I

~

- 3

~~.

~

60 ~

til

l

1 111/

-~

-,

_{/ \}

_I

~

+:--~ \Jl

~ ~ ~

~

-

2

()

=::r

40 ~

1

111 . /

•

I

II

I

~

C/) ~

20 -

'

'11I1 1:_ ' IIBI 1. .1 ~ I_ I 1-

1 o

UPII_ ' rei liIIl QF8 1,.1 ImlI_I1_ ' ,. I. , '

r:s;J

'-

181 1- ,

0 23 30

7 14 21 28

4 11

1~

7 14 21 28

5 12 19 26

2 9 16 23 30

7 14 21 28

4 11 18 25 31

(50)

46

TABLE 31. DATA COMBINED OVER LOCATIONS FOR CORN SILAGE HYBRIDS. THREE YEAR AVERAGE - 1995, 1996, 1997.

DRY SILAGE %DRY PLANT

(51)

47

TABLE 32. DATA COMBINED OVER LOCATIONS FOR CORN SILAGE HYBRIDS TWO YEAR AVERAGE - 1996, 1997.

DRY SILAGE %DRY PLANT

HYBRID OR MATTER YIELD MATTER HEIGHT POPULATION BRAND-HYBRID TONS/A TONS/A AT HARVEST INCHES PLANTS/ACRE pioneer 3172 6.0 17.0 33 96 28,000 pioneer 3082 6.0 17.3 32 92 28,000 NK McNair 508 6.0 17.1 30 95 28,000 Hyperformer HS 9977 5.9 16.9 30 89 30,000 NK 4714 5.9 16.5 32 85 28,000 55 943 5.7 16.5 33 93 28,000 Hyperformer HY9919V 5.6 16.4 32 88 30,000 Pioneer 3130 5.6 16.0 29 96 28,000 Hyperformer HY 9899V 5.6 15.9 31 87 30,000 55 827 5.6 15.9 31 90 28,000 DeKalb DK743 5.5 15.4 30 93 26,000 MGR 812 5.5 15.6 31 91 24,000

NK N8~11 5.4 16.2 31 87 28,000

(52)

48

TABLE 33. AVERAGE PERFORMANCE OF CORN SILAGE HYBRIDS - 1997. DRY SILAGE % DRY PLANT

HYBRID OR MATTER YIELD MATTER HEIGHT POPULATION BRAND-HYBRID TONS/A TONS/A AT HARVEST INCHES PLANTS/ACRE Agripro AP9909 5.9** 15.3 35 86 30,000 Pioneer 3082 5.5* 14.1 34 91 28,000 Pioneer 3172 5.5* 14.1 35 89 28,000 NK McNair 508 5.3* 14.1 32 96 28,000 Dekalb DK687 5.2* 13.5 33 94 26,000 +Terra E1186 5.1* 12.8 35 90 28,000 NK 4714 5.1* 13.5 33 84 28,000 Doebler's D858X MOD 5.1* 13.8 32 86 30,000 DeKalb DK743 5.1* 13.2 32 90 26,000 SS 897 5.0* 12.2 34 81 28,000 Hyperformer HY 9899V 4.9* 13.2 32 89 30,000 +Dekalb EXP568 4.9* 11.6 33 84 26,000 NK 4868 4.8* 12.2 31 81 28,000 Pioneer 3085 4.8* 13.7 30 96 28,000 AgraTech 888 4.8* 12.7 34 86 28,000 Hyperformer HS 9977 4.8* 12.8 30 84 30,000 SS 827 4.8* 12.6 33 87 28,000 Hyperformer HY9919V 4.8* 13.6 33 85 30,000 Mycogen TMFl13 4.8* 12.2 36 95 24,000 SS 828 4.7* 12.3 35 102 28,000 SS 943 4.7* 12.8 33 92 28,000 Dekalb 720S 4.7* 11.8 32 86 26,000 MGR 812 4.7* 12.1 33 86 24,000 Pioneer 3156 4.7* 11.3 34 89 28,000 Pioneer 3130 4.6* 12.6 32 93 28,000 Pioneer 32K61 4.6* 11.5 35 88 28,000 Terra TR 1226 4.5* 12.5 31 90 28,000 NK N8811 4.4* 12.5 33 85 28,000 Pioneer 3310 4.4* 11.8 34 92 28,000 MGR 621 4.2 10.7 37 80 24,000 MGR 942 4.2 11.1 33 80 24,000 +NK X7305 4.0 10.3 31 96 28,000

MEAN 4.8

C.V. (%) 11.3 BLSD (K-50) 1.7

S.E. 0.2

R2 (%) 92.7 ERROR D.F. 31

(53)

49

TABLE 34. AVERAGE PERFORMANCE OF CORN SILAGE AT HAYWOOD COUNTY - 1997.

HYBRID OR BRAND-HYBRID Agripro AP9909 pioneer 3082 +Terra E1186 55 897 DeKalb DK743 NK McNair 508 Pioneer 3172 Doebler's D858X MOD Pioneer 3156 55 828 +Dekalb EXP568 Mycogen TMFl13 MGR 812 NK 4714 Dekalb DK687 55 827

Hyperformer HY 9899V Hyperformer HY9919V NK 4868 Pioneer 3310 Pioneer 3085 Pioneer 3130 Dekalb 720S NK N8811

Hyperformer HS 9977 AgraTech 888 55 943 Pioneer 32K61 MGR 621 Terra TR 1226 +NK X7305 MGR 942 MEAN C.V. (%) BLSO (K-50) S.E.

R2 (%)

ERROR D.F. DRY MATTER TONS/A 8.3** 7.5* 6.8 6.7 6.6 6.6 6.5 6.5 6.5 6.4 6.4 6.3 6.3 6.3 6.2 6.2 6.1 6.1 6.0 5.9 5.8 5.8 5.7 5.7 5.6 5.6 5.6 5.5 5.4 5.1 5.1 5.0 6.1 9.0 0.8 0.3 83.7 56 SILAGE YIELD TONS/A 24.7 22.4 18.7 16.3 18.7 18.9 18.1 19.6 18.4 17.5 15.1 18.8 17.2 16.7 18.1 18.0 17.9 17.8 15.6 18.6 18.8 17.1 16.0 17.7 16.8 16.7 16.3 15.0 14.2 16.0 14.4 14.6 %DRY MATTER AT HARVEST 34 31 28 28 26 25 27 25 27 29 27 28 26 27 27 26 25 25 26 27 24 25 25 26 22 25 25 26 33 22 25 25 PLANT HEIGHT INCHES 113 123 113 105 117 124 116 113 123 117 104 128 111 107 112 114 116 107 100 118 126 125 108 109 108 117 117 118 100 118 120 108 POPULATION PLANTS/ACRE 30,000 28,000 28,000 28,000 26,000 28,000 28,000 30,000 28,000 28,000 26,000 24,000 24,000 28,000 26,000 28,000 30,000 30,000 28,000 28,000 28,000 28,000 26,000 28,000 30,000 28,000 28,000 28,000 24,000 28,000 28,000 24,000

(54)

50

TABLE 35. AVERAGE PERFORMANCE OF CORN SILAGE AT ROWAN COUNTY - 1997.

Pioneer 3172 Dekalb DK687 NK McNair 508 NK 4714 AgraTech 888 Hyperforrner HS 9977 Terra TR 1226 Pioneer 3085 SS 943

Doebler's D858X MOD NK 4868

Dekalb 720S

Hyperforrner HY 9899V Pioneer 32K61 DeKalb DK743 Pioneer 3130 Hyperforrner HY9919V Pioneer 3082 SS 827 +Terra E1186 Agripro AP9909 +Dekalb EXP568 MGR 942 SS 897 Mycogen TMF113 NK N8811 SS 828 MGR 621 MGR 812 +NK X7305 Pioneer 3156 Pioneer 3310 MEAN C.V. (%) BLSD (K-50) S.E.

R2 (%)

ERROR D.F. DRY MATTER TONS/A 4.4** 4.1* 4.1* 4.0 4.0 4.0 3.9 3.8 3.8 3.7 3.7 3.7 3.6 3.6 3.6 3.5 3.5 3.5 3.5 3.4 3.4 3.4 3.3 3.3 3.2 3.2 3.1 3.1 3.0 3.0 2.9 2.9 3.5 11.7 0.4 0.2 75.8 143 SILAGE YIELD TONS/A 12.1 10.8 11.7 11.9 10.7 10.7 10.5 11.2 11.1 10.8 10.2 9.7 10.3 9.7 9.8 9.8 11.0 9.9 9.4 9.3 10.5 9.9 9.3 9.7 8.9 9.9 9.2 8.6 9.5 8.3 7.8 8.4 %DRY MATTER AT HARVEST 39 37 36 35 38 34 36 34 37 36 34 35 37 40 35 37 37 36 37 39 35 35 37 38 40 36 38 40 36 35 38 38 PLANT HEIGHT INCHES 62 59 69 61 5S 60 63 65 66 60 63 63 62 59 63 62 63 59 61 67 59 65 53 57 63 61 71 61 62 72 56 66 POPULATION PLANTS/ACRE 28,000 26,000 28,000 28,000 28,000 30,000 28,000 28,000 28,000 30,000 28,000 26,000 30,000 28,000 26,000 28,000 30,000 28,000 28,000 28,000 30,000 26,000 24,000 28,000 24,000 28,000 28,000 24,000 24,000 28,000 28,000 28,000