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Group Title: Research Report - University of Florida Agricultural Research and Education Center ; 84-2
Title: Carrot production trials
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Permanent Link: http://ufdc.ufl.edu/UF00075881/00001
 Material Information
Title: Carrot production trials
Series Title: Research Report - University of Florida Agricultural Research and Education Center ; 84-2
Physical Description: Book
Language: English
Creator: White, James Marion
Publisher: University of Florida, Agricultural Research and Education Center
Publication Date: 1983
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Bibliographic ID: UF00075881
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 122260652

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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.






Copyright 2005, Board of Trustees, University
of Florida




(0-0





University of Florida
AGRICULTURAL RESEARCH AND EDUCATION CENTER
Sanford, Florida

Research Report SAN 84-2 July 183
JU N 2G .5..
CARROT PRODUCTION TRIAL S

J. M. White .F.A.S.- Univ. of Floride


There were 9400 acres of carrots harvested in Florida during the
1981-82 crop year. The total value was $13.2 million. Carrots are a
relatively new crop to Florida. Florida growers are rather limited in
selecting a high quality carrot cultivar which produces well under our
winter production conditions. Several seed companies as well as a
cooperative effort between the USDA and the University of Florida have
begun a carrot breeding program to improve the quality, disease resistance,
and yield of carrots grown in Florida. The open pollinated cv HiColor 9
is the standard which hybrids and others are compared.

Data from three plantings are presented in this report. Growers in
the Zellwood area who cooperated with these plantings are: Clonts' Farms,
Zellwin Farms, and A. Duda and Sons. The first harvest (February 10,
1983) of four cultivars did not have a significant yield difference even
though there was a wide range in yield (Table 1). This illustrates the
problem of measuring carrot production potential when using small plots.
Trends and relative yields provide a better guide than actual pounds per
acre. The size of the marketable roots of these four cultivars were
good with Fanci Pak and HiColor 9 being on the large size and FN2-9 and
Orlando Gold being more slender. Plant stand (spacing) may have had
some effect on the average root weight and root width.


Both Pac Mor and El Paso 8223,
acceptable in yield and root size.
than Pac Mor and was shorter (Table
yield difference.


harvested on March 14, 1983, were
El Paso 8223 tended to taper more
1), but there was no significant


The late planting (harvested May 24, 1983) had three cultivars which
were too short for fresh market carrots (below 16 cm in length). Amtou
may have potential in the "finger" carrot market. Orlando Gold and El
Paso 8223 had the best overall yield and fresh carrot root size and
shape (Table 1).

The interior or core color is one characteristic considered in a
carrot improvement program. Six cultivars were evaluated and the dis-
tribution recorded for eight interior colors. Considerable judgement
was used in developing these groups and a root could only be placed in
one group. If a root had more than one of the color groups, it was placed
in the least desirable color group. Data are presented in Table 2.







One hundred and nine cultivars and breeding lines were evaluated
for top growth, root color, shape, and overall appearance by 27 judges.
The judges were growers, seedsmen, and researchers. Table 3 is a
selected list of the 25 cultivars from this evaluation. There are 32
entries with some cultivars appearing more than once. A score of one
is very poor and 5 is excellent. Four cultivars rated better than the
standard, HiColor 9. Orlando Gold and FN2-9 were the two receiving the
highest scores.

Table 1. Summary of harvest data from three plantings of carrots,
Zellwood, FL, 1983.

% Root
% Lb/ market- Avg. wt/ length Width at
Line stand acre able root (g) cm 2 cm 10 cm
Harvested February 10, 1983
Orlando Gold 94 26,209aZ 76 65c 19a 2.7a 2.0b
FN2-9 62 21,635a 83 71bc 20a 2.4b 2.2ab
Fanci Pak 92 19,602a 66 91a 19a 2.9a 2.3a
HiColor 9 59 17,932a 67 78b 18a 3.0a 2.3a
March 14, 1983
Pac Mor 100 30,165 78 85 20 3.0 2.1
El Paso 8223 65 21,834 77 69 18 3.0 1.9
LSD 0.05 +31 +10,525 NS +9 +0.5 NS +0.13

May 20, 1983
Orlando Gold 100 50,693a 80 53c 22ab 2.6d
El Paso 8223 100 49,059a 88 78abc 23ab 3.2c ---
Baby Can 100 46,464a 58 71abc lid 4.0a
Amtou 100 43,923a 64 51c 13cd 2.8c ---
Feonia 235, Rona 100 38,768ab 64 61bc 16c 2.9c
IMP IV 86 38,660ab 88 84ab 23ab 3.0c
Flakkee, Regina 100 32,779bc 51 65ab 15c 3.5b ---
Feonia HS, Fina 100 30,492bc 55 67a 16c 3.3bc
O.G. 1981 49 28,967bc 82 89a 26a 2.9c ---
Imperator 54 28,496bc 85 91a 21b 3.2c --
HiColor 9 37 18,204c 78 93a 25a 3.0c -

ZMean separation within a column by Duncan's multiple range test, 5% level.

Table 2. Variation in carrot core color of six cultivars grown on muck,
Zellwood, FL, 1983.
Percent
No. of Uniform Uniform White White Light Green to
roots dark Uniform light flex in Yellou halo yellow yellow
Cultivar observed orange orange orange core core core halo core
Orlando Gold 213 0.0 31.4 12.7 24.9 9.4 21.6 0.0 0.0
FN 2-9 178 11.8 5.0 3.4 7.3 0.0 69.7 2.8 0.0
Fanci Pak 130 0.0 0.8 0.0 1.5 10.8 24.6 62.3 0.0
HiColor 9 104 0.0 0.0 5.8 0.0 0.0 89.4 0.0 4.8
El Paso 8223 264 6.1 45.1 22.0 5.3 3.0 0.7 17.4 0.4
Pac Mor 296 4.0 13.2 22.3 4.0 6.1 26.4 11.5 12.5




.


Table 3. Overall carrot scores for root and top appearance as rated by
27 judges, Zellwood, FL, 1983.

Cultivar Source Scorey


Orlando Gold
FN2-9
Orlando Gold
Candy Pack

Dagger 78
HiColor 9
El President
Charger

Javelin 80
Six Pack
Imperator 58
Imperator 58

Orlando Gold
Spartan Fancy '80
Woodland
Flavor Pak
HiColor 9
Paramount
Chancellor
Packer


Abbott & Cobb
Mark Bassett
Abbott & Cobb
Crookham

Dessert
Asgrow
Dessert
Moran

Dessert
Harris
Asgrow
Asgrow

Abbott & Cobb
Crookham
Northrup, King
Crookham
Asgrow
Asgrow
Asgrow
Crookham


Northrup,
Northrup,
Crookham
Harris


Sierra
Fanci Pak
Harvestmore
Hi Pak

Dominator
Imperator 58
Asisto Pak
Dominator

Candy Pack
Saber 78
Pak Mor
Texsun


King
King


Abbott & Cobb
Asgrow
Crookham
Abbott & Cobb


Agrigenetics
Dessert
Moran
Ferry Morse


Ylvery poor; 2-poor; 3-fair; 4-good; 5=excellent.


4.0
3.5
3.3
3.3

3.3
3.2
3.2
3.2

3.0
3.0
2.8
2.7

2.7
2.7
2.5
2.5
2.4
2.4
2.4
2.2

2.2
2.2
2.1
2.1

2.1
2.0
2.0
2.0


2.0
2.0
2.0
1.7


ZData for this table was taken from an annual carrot screening trial in
cooperation with J. O. Strandberg, Plant Pathologist, Univ. of Fla.,
C. E. Peterson, Research Horticulturist, USDA, and Zellwin Farms.


--- '




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