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Copyright 2005, Board of Trustees, University
of Florida

cFs
70

CENTRAL FLORIDA EXPERIMENT STATION

Sanford, Florida

Mimeo Report CFS70-2 July 28, 1969

CARROT VARIETY TRIALS

R. B. Forbes

Associate Professor (Associate Soils Chemist)

Twenty one varieties and lines of fresh market carrots were planted
on sand land (Leon, Immokalee and Charlotte fine sand) at Sanford and
twenty five lines were planted at the station's Zellwood farm on Everglades
mucky peat. Sixteen varieties of processor type carrots were planted at
both locations.

Six replicates in randomized blocks were used in all plantings. Fresh
market carrots were harvested when the majority were mature enough to meet
U. S. Grade A standards. Total marketable yields, which included the over-
size but otherwise sound carrots were determined. Ratings for blight
(Cercospora and Alternaria sp.) were made at harvest. No fungicides were
applied on the Sanford plantings where blight was not severe until harvest.
The later plantings at Zellwood were sprayed weekly intervals with maneb +
zinc. The fungicide program was stopped a few weeks before harvest to allow
enough leaf blight to build up for comparative ratings to be made.

Growing conditions were average through most of the season, although
seedlings suffered some stand reduction by cold windy weather soon after
the Zellwood plantings were made.

Data from the Sanford trials are given in Tables 1, 2, 3, and 4, while
data from Zellwood muckland plantings are given in Tables 5, 6, 7, and 8.

-2-

Table 1. Fresh Market Carrots, Sanford i968-69; Yields and Blight Ratings.
STons/acre

Plot U.S.1 Total1 Blight2
No. Variety Seed Source Grade A Marketable Rating

Waltham Hicolor
Pacesetter
Imperator 408
Gold Pak 28 (12/21)
Gold Pak (12/20)
Waltham Hicolor
Long Imperator 58
XP 108
XP 64296
Carousel
Hicolor 9
Highlight
Imperator XL
Imperator 58 Seed
Imperator 58 sp. "
Hi Color

Ace
Hipak

Pioneer
Nantesa Superior

Riel Red
S 35/62-1

Northrup-King
I 1
if i,

Ferry-Morse

11 n

It 11

Asgrow

11

Keystone
Research Specialists
It II

Harris

11

Ferry-Morse

It 11
11 11

Planting date: October 10, 1968
Harvest date: February 3, 1969

1Mean of 6 replicates.

2Blight ratings according to Ullstrup's Scale: O = no blight; 5 = very heavy
infection, lesions abundant on all leaves.

4.2
7.5
5.6
7.3
6.4
5.4
7.2
6.4
5.1
7.9
7.4
6.2
5.2
5.7
6.8
6.1
5.7
poor
stand
1.6
poor
stand
4.0
poor
stand

7.1
8.8
6.2
7.6
6.7
7.9
9.0
8.0
11.7
10.0
8.3
9.9
5.9
6.2
7.8
8.1
7.2
poor
stand
4.0
poor
stand
5.7
poor
stand

1.1
3.5
2.9
2.6
2.8
1.7
2.8
2.7
2.5
3.3
1.2
2.7
2.9
2.9
3.1
1.8
2.6
2.9

3.8
2.4

3.8
2.0

S3-

Table 2. Fresh Market Carrots, Sanford, 1968.

Descriptive Notes:

Seed Length Width2 Color
Variety Source inches Shape 0 Y Flavor Other Notes

21 Waltham Hicolor
22 Pacesetter
23 Imperator 408
24 Gold Pak 28 (12/21)
25 Gold Pak (12/20)
26 Waltham Hicolor
27 Long Imperator 58
28 XP 108
29 XP 64296
30 Carousel
31 Hicolor 9
32 Highlight
33 Imperator XL
34 Imperator 58
35 Imperator 58 sp.
36 Hi Color
37 Ace
38 Hipak
39 Pioneer
40 Nantesa Superior
41 Riel Red
42 S 35/62-1

NK
NK
NK
FM
FM
FM
FM
A
A
A
A
A
K
SRS
SRS
SRS
SRS
H
H
FM
FM

6.3
6.5
5.8
6.5
5.8
5.8
6.0
6.3
5.5
5.5
6.8
5.8
5.8
6.5
6.5
6.0
6.3
5.0
5.0
4.5
6.0

1.25
1.16
1.15
1.10
1.00
1.04
1.10
1.10
1.26
1.14
0.95
1.20
1.23
1.09
1.15
1.25
1.16
1.11
1.24
1.38
1.20

fair to good
good
fair
very good
good
fair to good
good
fair to good
excellent
good
fair to good
excellent
fair to good

good

I
I
I
I
I
I
I
I
I-N5
I
I
I5
I
I

I
I
I
I
I-N
N
I

fair to good
very good
good
excellent
good
poor

green shoulders
hard

good
I

appearance
II

11 It
It II

green shoulders
II It

bright color
good appearance

bright color
crisp

green shoulders
it ft
1? It

FM no sample poor stand

Seed Source: NK Northrup, King & Co.
FM Ferry-Morse
H J. Harris

A -
SRS-
K -

Asgrow
Seed Res. Specialists
Keystone

2Average of 10 carrots sampled.

3Shape or type of root: I Long Imperator N Nantes.

4Number of carrots with orange core (0) or unacceptable light colored or pale
yellow (Y) core from sample of 10 carrots.

5Points more rounded than common Imperator.

Table 3. Processor Carrots, Sanford,

196970; Yields and Blight Ratings.

Marketable
Plot Seed Carrots Blight2'3
No. Variety Source Tons/A Rating

Danvers 126

Chantenay, Red Cored

Exp. G1958

Royal Chantenay

Danvers 126

Chantenay, Red Cored 7317

Chantenay 403

Danvers 126

Chantenay, Red Core 5

Danvers 126

Danvers HF

Red Cone

Wissyn 5

Wissyn 6

Hybrid 12H

Royal Chantenay 321

NK

NK

NK

FM

FM

K

K

K

SRS

SRS

SRS

FM

FM (poor stand)

H

H

Planting date:

Harvest date:

October 28, 1969

April 14, 1969

Seed Source: Same as in Table 2.

2Mean of 6 replicates.

3Blight Ratings according to Ullstrup's Scale: 0 = no blight; 5 = very heavy
infection, lesions abundant on all leaves.

29.2

29.5

34.7

28.5

30.9

30.0

22.3

31.5

29.0

29.2

20.5

17.0

24.0

8.9

26.9

27.3

3.2

4.0

4.0

4.1

3.4

3.9

4.6

3.3

4.0

3.2

3.2

4.0

3.8

3.8

3.7

4.1

i5-

Table 4. Processor Carrots, Sanfordi 1968.'

Descriptive:Notes:

Seedi Length Width2 Color Other
Variety Source .inches Shape 0 Y Flavor Notes
Variety Sourc

1 Danvers 126

2 Chantenay, Red Cored

3 Exp. G1958

4 Royal Chantenay

5 Danvers 126

6 Chantenay, Red Cored 7317

7 Chantenay 403

8 Danvers 126

9 Chantenay Red Core 5

10 Danvers 126

11 Danvers HF

12 Red Cone

13 Wissyn 5

14 Wissyn 6

15 Hybrid 12H

16 Royal Chantenay 321

NK

NK

NK

NK

FM

FM

K

K

K

SRS

SRS

SRS

FM

FM

H

6.0

4.0

5.0

5.0

5.5

4.8

5.0

5.5

5.0

5.5

5.5

6.5

5.5

5.5

5.5

2.00

2.00

2.22

1.93

2.18

2.12

1.95

1.90

2.02

2.07

1.80

1.64

1.94

1.73

1.94

D

Ch

Ch

Ch

D

Ch

Ch, long

D

Ch

D

D

D, long

D

D

Ch, long

H 5.0 1.82 Ch, long 10

good

very

It

It

good

very

ii

good

It

11 2/

good

II

fair to good

very good

fair to good

good, crisp

fair, tough

fair to good

very good

excellent

0 excellent

Seed Source: Same as in Table 2.

2Average of 10 carrots sampled.

3Shape or type of root: Ch Chantenay
D Danvers

4Number of carrots with orange core (0) or unacceptable light colored or pale yellow
(Y) core from sample of 10 carrots.

540% or more showing sunburn and green discoloration in top part of carrot.

Zeilwood;, 198-69, Yields and Blight Ratings.

Yield Tons/A1
Plot Seed U.S. Total Blight1'2
No. Variety Source Grade A Marketable Rating
p ,i T, : ,,

Waltham Hicolor
Pacesetter
Imperator 408
Gold Pak 28 (12/21)
Gold Pak (12/20)
Waltham Hicolor
Long Imperator 58
XP 108
XP 64296
Carousel
Hicolor 9
Highlight
Imperator XL
Imperator 58
Imperator 58 Special
Hi Color

Ace
Gold Pak-S
Hybrid 2132-28
Nantesa Superior
Riel Red
S 35/62-1
589132/18
Waltham Hicolor 328/18
Waltham Hicolor

Northrup-King

it 11

Ferry-Morse

It it
it It

Asgrow
Wi

Seed
11

Keystone
Research Specialists
if Wi

WI It
WV IV
II WI

Harris
Ferry-Morse
If It

Harris

Dessert (Walton)

12.2
10.0
7.1
11.1
10.4
8.2
9.7
poor stand
7.8
poor stand
5.9
poor stand
12.4
poor stand
10.6
10.4
13.8
6.2
11.7
6.6
poor stand
poor stand
4.8
poor stand
13.3

Planting date:
Harvest date:

December 12, 1968.
May 15, 1969.

IMean of 6 replicates.

2Blight ratings accordint to Ullstrup's Scale: 0 = no blight; 5 = very heavy
infection, lesions abundant on all leaves.

14.2
11.2
9.9
11.3
10.4
12.0
10.7

13.5

7.4

14.0

12.1
11.3
14.8
6.2
18.0
9.4

13.1

17.2

2.2
3.8
3.4
3.4
3.0
2.0
3.7
3.0
3.2
3.2
2.1
2.8
3.5
3.0
3.6
2.1
3.3
3.3
2.4
2.9
3.1
3.1
2.7
2.0
2.6

- -- -- I

Table 5. Fresh Market Carrots,

'7-

Table 6. Fresh Market Carrots, Zellwobd, 1968-69.

Descriptive Notes

Seedl Length Width2 Color Other
Variety Source inches Shape 0 Y Flavor Notes

Waltham Hicolor
Pacesetter
Imperator 408
Gold Pak 28 (12/21)
Gold Pak (12/20)
Waltham Hicolor

Long Imperator 58
XP 108
XP 64296

Carousel
Hicolor 9
Highlight
Imperator XL
Imperator 58
Imperator 58 Sp.
Hi Color
Ace
Gold Pak-S
Hybrid 2132-28

Nantesa Superior
Riel Red
S 35/62-1
589132/18
Waltham Hicolor 328/18
Waltham Hicolor

A
A
A
K
SRS
SRS
SRS
SRS
SRS
H

FM
FM
FM
H
H
D

9
8
8
7.5
7
8

7.6
7.5
7

7
9
8.5
7
8
8
8.5
7.5
8.5
7.5

5.5
8.0
8.0
7.0
8.5
7.5

1.28
1.10
1.20
1.06
1.15
1.15

1.08
1.15
1.38

1.14
1.10
1.32
1.18
1.06
1.08
1.20
1.19
1.05
1.25

1.20 N,
1.30
1.13
1.20
1.00
1.25

fair to good
good

I
I
I
I
I
I

I
I
I-N

very
very
good
fair

good
good
good appearance
to good long root
tips

excellent
fair to good
good

good
fair
fair to good
good
fair
good
fair
good
good
good

excellent
I

very good
fair
fair
fair to good

long
I
I
I
I
I

II II

green
shoulders

long tips

long tips
long tips
long tips
some green
shoulders
II II

long tips

long tips

1Seed Source: NK Northrup, King & Co.
FM Ferry-Morse
H J. Harris

A Asgrow
SRS Seed Research Specialists
K Keystone
D Dessert (Walton)

2Average of 10 carrots sampled.
3Shape or type of root: I Long Imperator; N Nantes.
Number of carrots with orange core (0) or unacceptable light colored or pale
yellow (Y) core from sample of 10 carrots.

-8-

Table 7. Processor Carrots, Zellwood 1968-69, Yields and Blight Ratings.

Marketable1
Plot carrots Blight'2
No. Variety Seed Source Tons/acre Rating

Danvers 126

Chantenay, Red Cored

Experimental G-1958

Royal Chantenay

Danvers 126

Chantenay Red Cored 7317

Chantenay 403

Danvers 126

Chantenay Red Core 5

Danvers 126

Danvers HF

Red Cone

Wissyn 5

Wissyn 6

Hybrid 12H

Royal Chantenay 321

Northrup-King

It It
It II

Ferry-Morse

II It

Keystone
11

It

Seed Research Specialists

It It 1I

II II

Ferry-Morse

11 II

Harris

It

29.5

30.1

30.8

22.4

25.5

24.1

16.2

26.1

25.8

32.2

13.2

poor stand

15.9

poor stand

32.6

19.7

Planting date: November 27, 1968.
Harvest date: May 19, 1969.

1Mean of 6 replicates.

2Blight ratings according to Ullstrup's Scale: 0 = no blight; 5 = very heavy
infection, lesions abundant on all leaves.

3.5

3.8

3.8

3.7

3.3

4.0

4.2

3.8

3.9

3.6

3.2

3.6

4.0

3.9

4.4

4.0

.9

Table 8. Processor Carrots,'Zellwood, 1968-69.

Descriptive Notes

1d 2 4
Seed1 Length Width2 Color
Variety Source inches Shape 0 Y Flavor Other notes

Danvers 126

Chantenay, Red Cored

Exp. G-1958

Royal Chantenay

Danvers 126

Chantenay Red Cored 7317

Chantenay 403

Danvers 126

Chantenay, Red Core 5

Danvers 126

Danvers HF

Red Cone

Wissyn 5

Wissyn 6

Hybrid 12H

Royal Chantenay 321

NK

NK

NK

NK

FM

FM

K

K

K

SRS

SRS

SRS

FM

FM

H

H

6.5

6.0

5.8

5.0

6.5

5.8

5.5

7.0

4.5

6.8

7.5

8.5

6.5

6.5

5.0

5.5

2.20

2.23

2.22

1.74

1.96

2.11

1.73

2.15

1.88

2.10

1.76

1.60

1.74

1.60

1.65

1.87

D

Ch, long
i f i

Ch

D

Ch, long

D

Ch

D

D, long

D, long

D

D

Ch

Ch, long 10

fair to good

excellent

good

very good

good

good

very good

fair to good

good

good

fair to good

11 i

0 good

0 good

0 excellent

0 very good

ir

some sunburn

some sunburn

some

'I

sunburn

11
ii

Bright color
tough

regular shape

some sunburn

it tI

Seed sources same as in previous tables.
Average of 10 carrots sampled.
3Shape or type of root: Ch = Chantenay
D = Danvers
4Number of carrots with orange core (0) or unacceptable light colored or pale
yellow (Y) core from sample of 10 carrots.

- 10 -

Results and Discussion

Fresh Market Carrots: At Sanford the highest yields were produced by three
of the new lines from Asgrow: XP 64296, Carousel, and Highlight. At Zellwood,
the leaders were Hybrid 2132-28 (Harris), and Waltham Hicolor, at both locations
there were poor stands with insufficient plants for fair yield comparisons in a
few of the varieties. Some seed lots were weak and some damage had occurred to
the Sanford plots in the October 1968 hurricane and to the Zellwood plots from
cold, dry weather, as noted earlier.

At both locations, the Waltham Hicolor lines, Hicolor 9, and Hi Color showed
the greatest degree of blight resistance.

Best eating quality carrots were XP 64296, Highlight, Pioneer, Nantesa
Superior, Long Imperator 58, and Riel Red.

Processor Carrots: At Sanford, good yields were obtained from all varieties
except Wissyn 6 which came up with too light a stand for good yield comparisons.
Highest yielding variety was Exp. G 1958 from Northrup-King, followed closely by
Danvers 126 and several of the Chantenay lines.

At Zellwood, the highest yields were produced by Hybrid 12H (Harris),
Danvers 126, and Exp. G 1958.

The Danvers lines were generally a little more blight resistant than the
Chantenay. The Chantenay lines and Hybrid 12H were the sweetest and best tasting.

Processing Trial: Samples of all varieties were processed in the HLH
Products canning plant at Sanford through the cooperation of Mr. Charles H.
Robinson. Cans were opened after a few weeks in storage and varieties were
compared for color, texture, taste, and general appearance.

In the slicing carrots with a desired diameter of 30-35 mm, the highest
ratings were given to Riel Red, XP 108, Hybrid 2132-28 and Gold Pak 12/20.
Among the larger diameter varieties used for dicing, the Danvers lines were
leading, followed closely by Wissyn 5.