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HUME LIBRARY

NOV 18 19
CENTRAL FLORIDA EXPERIMENT STATION
Sanford, Florida
Sanford, FloridaF.A.S. Univ. of Florida

Mimeo Report CFES 68-5 August 6, 1968

CARROT VARIETY TRIALS

R. B. Forbes, Associate Soils Chemist

Thirteen varieties of fresh market carrots were planted on sand land
(Leon, Immokalee, and Charlotte fine sand) at Sanford and 14 were planted
at the Zellwood farm on Everglades mucky peat. Nine lines of processor
type carrots were planted at both locations.

Six replicates in randomized blocks were used in all plantings.
Plots were 24 feet long with 4 rows per plot spaced 12 inches apart at
Sanford and 15 inches apart at Zellwood. A measured area (two rows wide
and 10 feet long) from the middle of each plot was harvested for yield
determination.

Fresh market carrots were harvested when the majority of the
varieties would meet U. S. Grade A standards. Total marketable yields,
which included the oversize but otherwise sound carrots, were also
determined. Ratings for blight (Cercospora and Alternaria) were made
near harvest time at both locations. The fungicide program (maneb +
zinc) was stopped a few weeks before harvest so that enough blight
would be present for comparative ratings to be made.

Growing conditions were good or average through most of the season
except for below average rainfall which necessitated some irrigation.

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

100 copies

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Table 1.- Fresh Market Carrots, Sanford, 1968; Yields and Blight Ratings.

Plot US Total Blight1'2
No. Variety Seed Source Grade A Marketable Rating

21 Waltham Hicolor Harris 7.0 10.4 1.1

22 Hipak Harris 11.0 11.3 2.5

23 Highlight Asgrow 7.1 12.1 2.3

24 XP 64296 5.9 14.4 2.4

25 Carousel 9.8 13.2 2.5

26 Hicolor 9 8.2 10.2 0.9

27 Nantes 99 5.9 9.5 3.7

28 Exp. 8822 Keystone 2.7 14.2 2.5

29 Imperator 58 Seed Research Specialists 4.7 9.0 2.7

30 Eureka 6.8 8.3 2.8

31 Imperator 408 Northrup-King 8.3 10.8 2.8

32 Pacesetter 9.9 11.2 3.2

33 Waltham Hicolor 8.0 9.8 0.9

L.S.D. .05 2.1 2.0

Planting date: October 12, 1967

Harvest date: January 29, 1968

1Mean of 6 replicates.
2Blight ratings according to Ullstrup's Scale: 0 = no blight; 5 = very heavy
infection, lesions abundant on all leaves.

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Table 2.- Fresh Market Carrots, Sanford, 1968.

Descriptive Notes:
1 2 4
Seed Length Width Color Other
Variety Source inches Shape 0 Y Flavor Notes

21 Waltham Hicolor H 5.5 1.28 I 10 0 strong Bright
color
22 Hipak H 5.5 1.25 I 10 0 very good
23 Highlight A 5.6 1.34 I 10 0 good
24 XP 64296 A 6.0 1.31 N, 10 0 excellent some
long sunburn
25 Carousel A 6.4 1.32 I 10 0 good
26 Hicolor 9 A 6.0 1.22 I 10 0 good to fair, Bright
hard color
27 Nantes 99 A 4.8 1.28 N 10 0 excellent some
sunburn
28 Exp 8822 K 5.2 1.58 I 10 0 fair corrugated
29 Imperator 58 SRS 5.8 1.20 I 9 1 good
30 Eureka SRS 6.0 1.28 I 10 0 good
31 Imperator 408 NK 5.6 1.22 I 10 0 good
32 Pacesetter NK 5.9 1.20 I5 10 0 very good some
sunburn
33 Waltham Hicolor NK 5.6 1.29 I 10 0 fair to good Bright
color

Seed source:

H Joseph Harris Co., Inc.

A -
K-
SRS -
NK-

Asgrow Seed Co.
Keystone Vegetable Seeds
Seed Research Specialists, Inc.
Northrup, King & Co.

Average of 10 carrots sampled.

Shape 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.

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Table 3.- Processor Carrots, Sanford, 1968; Yields and Blight Ratings.

Seed
Source

Marketable
Carrots Blight12
Tons/A Rating

Royal Chantenay

Hybrid 12 H

Danvers 126

Danvers HF

Royal Chantenay

Royal Chantenay 147B52

Exp 1958

Red Cored Chantenay

Danvers 126

Harris

it

Seed Research Specialists

i1 Ii If

II It

Northrup King

It iI

L.S.D. .05

Planting date: October 12, 1967

Harvest date: March 4, 1968

1Mean of 6 replicates.

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

Plot
No.

Variety

24.6

26.6

18.6

18.3

25.0

24.0

23.6

24.2

25.6

2.8

3.0

3.4

2.0

2.0

2.8

3.2

2.8

3.0

2.4

-

-5-

Table 4.- Processor

Carrots, Sanford, 1968.

Descriptive Notes:

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

1 Royal Chantenay H 4.9 2.06 Ch 10 0 very good some
sunburn
2 Hybrid 12 H H 4.9 1.86 Ch 10 0 good

3 Danvers 126 SRS 5.6 1.85 .D 10 0 good

4 Danvers HF SRS 5.2 1.87 D 10 0 fair

5 Royal Chantenay SRS 4.6 2.12 Ch 10 0 good

6 Royal
Chantenay 147B52 NK 4.5 2.02 Ch 10 0 very good

7 Exp 1958 NK 4.6 2.14 Ch 10 0 good

8 Red Cored Changenay NK 4.2 2.06 Ch 10 0 good some
sunburn
9 Danvers 126 NK 4.9 1.88 D-Ch 10 0 fair to good

Seed Source:

H Joseph Harris Co. Inc.
SRS Seed Research Specialists

NK Northrup, King & Co.

Average of 10 carrots sampled.

Shape or type of root: Ch Chantenay
D Danvers

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

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Table 5.- Fresh Market Carrots, Zellwood, 1968, Yields and Blight Ratings.

Yield, Tons/A
Plot U.S. Total Blight'2
No. Variety Seed Source Grade A Marketable Rating

Waltham Hicolor

Hipak

Highlight

XP 64296

Carousel

Hicolor 9

Nantes 99

Exp 8822

Imperator 58

Eureka

Imperator 408

Pacesetter

Waltham Hicolor

H 2132

Harris

ft

Asgrow

ft

Keystone

Seed Research Specialists

i it fit

Northrup-King

Harris

L.S.D. .05

5.6

8.9

7.2

8.8

9.2

7.4

8.4

5.0

8.5

7.9

8.0

8.7

8.1

9.6

2.0

13.6

9.4

12.8

13.7

11.0

11.9

10.0

6.7

9.8

11.4

11.0

9.8

15.2

12.6

2.8

1.6

3.3

2.7

3.2

3.5

1.9

3.8

2.7

2.9

3.2

3.0

3.4

1.8

2.8

Planting date: October 26, 1967

Harvest date: February 26, 1968

1Mean of 6 replicates.

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

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Table 6.- Fresh Market Carrots, Zellwood, 1968.

Descriptive Notes
1 2
Seed Length Width2 Color Other
Variety Source inches Shape 0 Y Flavor Notes

21 Waltham Hicolor H 7.6 1.21 I,long 9 1 fair to good

22 Hipak H 5.9 1.o8 I 9 1 very good

23 Highlight A 7.4 1.16 I 7 3 good

24 XP 64296 A 6.2 1.22 I5 5 5 good

25 Carousel A 6.8 1.18 I 9 1 very good

26 Hicolor 9 A 7.9 1.21 I,long 9 1 fair to good

27 Nantes 99 A 5.8 1.24 N,long 2 8 very good

28 Exp 8822 K 7.2 1.34 I 10 0 fair corrugated

29 Imperator 58 SRS 8.2 1.19 I,long 5 5 good

30 Eureka SRS 7.4 1.22 I 7 3 good

31 Imperator 408 NK 7.8 1.19 I 6 4 good

32 Pacesetter NK 7.4 1.06 I 7 3 very good

33 Waltham Hicolor NK 7.4 1.20 I 10 0 fair to good

34 H 2132 H 8.0 1.28 I 8 2 good

Seed source:
Seed source:

H Joseph Harris Co., Inc.

A Asgrow Seed Co.
K Keystone Vegetable Seeds
SRS Seed Research Specialists, Inc.
NK Northrup, King & Co.
2
Average of 10 carrots sampled.

Shape 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.

9Points more rounded than common Imperator.

-8-

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

Marketable 1
Plot Carrots Blight '
No. Variety Seed Source Tons/acre Rating

1 Royal Chantenay Harris 11.9 2.2

2 Hybrid 12 H 22.1 2.6

3 Danvers 126 Seed Research Specialists 20.1 3.0

4 Danvers HF 20.1 3.0

5 Royal Chantenay 18.4 2.7

6 Royal Chantenay 147B52 Northrup-King 14.7 2.1

7 Exp 1958 20.3 2.8

8 Red Cored Chantenay 21.7 2.8

9 Danvers 126 30.2 3.4

L.S.D. .05 3.5

Planting date: October 26, 1967

Harvest date: April 16, 1968

1Mean of 6 replicates.

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

-9-

Table 8.- Processor Carrots,

Zellwood, 1968.

Descriptive Notes

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

1 Royal Chantenay H 5.3 1.84 Ch 10 0 good

2 Hybrid 12H H 6.2 1.87 Ch, 10 0 good
long

3 Danvers 126 SRS 8.0 2.26 D, 10 0 good some seeders
long

4 Danvers HF SRS 8.0 2.18 D 10 0 good few seeders

5 Royal Chantenay SRS 6.4 2.20 Ch 10 0 very good few seeders

6 Royal
Chantenay 147B52 NK 5.8 1.87 Ch 10 0 very good

7 Exp 1958 NK 5.5 2.02 Ch 10 0 good

8 Red Cored Chantenay NK 5.5 1.92 Ch 10 0 good

9 Danvers 126 NK 7.5 2.06 D 10 0 good

Seed source:

H Joseph Harris Co.,

Inc.

SRS Seed Research Specialists
NK Northrup, King & Co.

Average of 10 carrots sampled.

Shape or type of root: Ch Chantenay
D Danvers

Number 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, three of the new varieties: Hipak,
Carousel and Pacesetter were the top yielders. At Zellwood the leaders were
H 2132 and Carousel for U.S. Grade A carrots with Waltham Hicolor and XP 64296
leading in total yields.

At both locations Hicolor 9 and Waltham Hicolor showed the greatest degree
of blight resistance.

Best eating quality carrots were XP 64296 and Nantes 99 followed closely
by Hipak and Pacesetter.

Processor Carrots: At Sanford, Hybrid 12H was the highest yielder.
However, according to Duncan's Multiple Range Test, there was no significant
difference between Hybrid 12H and 6 varieties which followed it closely:
Danvers 126 (NK), Royal Chantenay (SRS) and (H), Red Cored Chantenay, Royrl
Chantenay (NK) and Exp 1958.

At Zellwood, Danvers 126 (NK) produced the highest yields.

The blight picture showed no clearcut trend. At Sanford, Danvers 126 (SRS)
and Danvers HF were the most resistant, while at Zellwood two of the Royal
Chantenay lines appeared to have better blight resistance than the Danvers lines.
Blight was not severe enough at either location to be much of a limiting factor.

The best tasting carrots appeared in the Royal Chantenay lines.

HISTORIC NOTE

The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.

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