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Title: Hybrid cabbage variety trials.
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Permanent Link: http://ufdc.ufl.edu/UF00076891/00001
 Material Information
Title: Hybrid cabbage variety trials.
Series Title: Hybrid cabbage variety trials.
Physical Description: Serial
Language: English
Creator: Guzman, V. L.
Publisher: Everglades Experiment Station.
Place of Publication: Belle Glade, Fla.
Publication Date: Spring 1965
 Record Information
Bibliographic ID: UF00076891
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 166140824

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Everglades Experiment Station Mimeo Report EES66-3 ly, 1965


HYBRID CABBAGE VARIETY TRIALS, SPRI Gi60'2 .I.

V. L. Guzman-

The first trial, planted on November 26, 1964, was killed by the devastating
cold spell of January 18, 1965. Seed of a few entries were limited for the second
trial planted on February 4, 1965.

Weather conditions
Another cold spell on February 27, damaged the second planting, but the cab-
bage was not killed Weather conditions were favorable for the development of
downy mildew which caused severe retardation of growth. Temperatures for the
remainder of the growing season were about normal. Rainfall was:above normal
during February, and low during March, April, and May but water was not limiting
growth. Wind damage to young plants was severe during February again causing
growth retardation. Despite the adverse climatic conditions, in particular during
the first part of the growing period, the cabbage made good growth and produced a
good crop.

Location, planting and harvest dates
Horticulture experiment No. 514A was grown at Duda and Sons farm, field P-9
about 3 miles south of the Station. The experiment was direct seeded in the
field, using a Planet Jr. planter, on February 4, and harvest began May 12 and
ended on May 26, 1965.

Fertility conditions
The experimental field had been under cultivation for 3 years being cropped
previously to escarole, cabbage and sweet corn. The soil analysis after fertili-
zation, showed 34 pounds of soluble phosphorus, 194 pounds of potassium, and a pH
of 6.12.

Weeds, diseases and insect control
Pre- emergence application of 6 pounds/A of Vegadex kept the experimental.
field free of weeds for two months. In addition 2 hand pulling of large weeds
was necessary. It was thought that the use of herbicides, instead of mechanical
means, would minimize the spread of black rot. It was not possiblesto ascertain
the validity of this theory, but the incidence of black rot.was.very low in the,
experimental field. Routine measures for disease and insect control by the
grower-cooperator were satisfoctory. However, at the beginning of the growing
period, there was serious infestation by aphis and mildew, which resulted in growth
retardation.

Each variety was harvested twice, the first when,a.few of the heads showed
incipient bursting. Only the very small heads or those damaged by diseases or
insect were considered culls.



Associate Horticulturist, Everglades Experiment Station, Belle Glade, Florida.
Associate Horticulturist, Everglades Experiment Station, Belle Glade, Florida.








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Varieties and seed sources


CABBAGE VARIETY TRIALS
Planted February 9, 1965


Variety


Replicated Trials

Source


1. Hybrid King Cole
:2, Expt. hybrid, #2
3. Expt. hybrid, 1#5
4.. Expt. hybrid, #8
S. Expt. hybrid, #9'
6. Expt. hybrid, E-4201
7. Expt. hybrid, E-4203
8. Expt. hybrid, E-4204
9. Expt. hybrid, E-4205
10. O.S. Cross, 5203-H
11, Emerald Cross, 5067-H
12. Market Topper, 278Y
13. Market.Prize, 283
14. Market Topper, 278
15. C-2W7
16. Badger Market, Check
17. Copenhagen Market, Check


Ferry Morse- :.:
Ferry Morse,
Ferry Morse
Ferry Morse
Ferry Morse
Ferry Morse
Ferry Mbrse
Ferry Morse
Ferry Morse
Burpee
Burpee,
.J. Harris
SJ. Harris
J. Harris
J. Harris
Asgrow
Asgrow


17a. Hybrid, 479x330"
18. Hybrid, 336x325
19. Hybrid, 325x336
20. Hybrid, 330x479
21. Badger hybrid' Badger
22. Hybrid, Expt..No. 3
23. Hybrid, Expti No. 4
24. Hybrid,. Expt. No. 3
25.. Hybrid, Expt. No. 1
26. Hybrid, F-E-4202
27... Hybrid,iF-#4 .


S Observat





Belle


:ional


Trials


University of Wisconsin
University of Wisconsin
University of Wisconsin
U university of Wisconsin
: Rohnert
Rohnert
Rohnert '
Rohnert
Ferry Morse
Perry Morse


Results
Table 1 and 2 give the tabulated data on performance of the hybrids. Badger
Market:and Copenhagen Market the checks (open polilnated varieties) did not have
satisfactory stands, therefore some transplanting from rows with excess plants.was
done. Despite this procedure, stand of some rows was below satisfactory. This
resulted in low yields and the production of large heads with a mean weight of
3.04 and 2.37 pounds for Badger .Market-and Copenhagen-Market respectively.


~ :
'''






S-3-


It should be pointed out that high yields correspond to those hybrids with
large heads, since yields were estimated from plot mean weight. This, however,
should be interpreted in many cases as detrimental, since, only 14 heads or less
could be packed in a crate. The most desirable number of heads for fresh market
trade is from 18 to 22.

Most of the hybrids were of bluish-green to greyish-green color, and later
than the check varieties. The percentage of first picking was high with the hy-
brids, indicating that they are.more adapted to mechanical harvesting than the
check varieties. Regardless of source, all hybrids, as'well,as Badger Market and
Copenhagen Market had long cores.

The Ferry Morse hybrids were in general, of deeper bluish-green color than
any other source. They were uniform in size, maturity, and color. Few of these
hybrids showed traces of black spots or specks inside the heads, but the majority
had black spots on top of the heads. King Cole, a hybrid extensively planted this
season, was.not as uniform as desired and.produced large heads of medium green,
light bluish color and relatively low percent of first cutting. This variety:pro-
duced slightly flattened medium size heads, 1963-64, but this season some of the
heads were glove shaped with a tendency of being more elongated on the stem axis
and too large to put 18 to 22 heads in a crate. It should be pointed out here,
again, that the estimated number of heads per 50 pound crate is only approximate.
King Cole produced heads with a mean weight of 2.63 pounds. This gives an esti-
mate of 19 heads per 50 pound crate, which is what the trade wants. However, only
14 to 16 heads could be packed in a crate, resulting sometimes with crates with
less than 50 pounds. For this reason large heads are sold at a lower price.

Considering all the attributes that make a good fresh market variety, it
seemed that hybrid No. 9 with accession number 5, was best in the trial. The color
of this hybrid was bluish-green to greyish-green, several days later than the checks;
but appeared to be, if not resistant, highly tolerant to bacterial black spots of
the head. It can be practically harvested in one cutting. It will produce hard
heavy heads, which remained for a considerable time in the field without bursting.
Hybrids 2 and 8 resembles closely hybrid 9, but some black spots were found on the
heads. Hybrids 5, E4201 and E4204 deserve further trial.

Hybrid O.S Cross, 5203-H from Burpee, produced large flattened heads late in
maturity with a large core and with a large percentage of'hollowness inside. This
hybrid is not adapted for fresh market when grown under Florida conditions. Emer-
ald Cross, 5067 had a fine outside appearance, but had the tendency to have soft
side spots in otherwise good looking heads. Further it developed numerous black
spots on top of the heads.

Hybrids from J. Harris were quite uniform, producing bluish-green color heads
that remain in the field.for a few days without bursting at maturity. The round
hard heads produced by these hybrids, however, showed severe incidence of black spots
or/and black specks on the heads and sometimes inside the heads accompanied by
marginal necrosis. of the inside leaves. Many heads were free of the marginal
necrosis, but most of them showed bacterial black spots on top of the heads.









: In the observational trials (table 2) stand was not satisfactory; because seeds
were limited for the second planting, except for-hybrids F.E. 4202 and F34, which
were in good supply. Some transplanting was done in rows 17a to 25 .at the time of
thinning. Therefore, at, harvest it .was difficult to tell, whether or not the lack
of uniformity was entirely due to transplanting or to inherent quality of the hybrids

SThe.,four:hybrids from the:University of. Wisconsin, 'had fairly good stand at
harvest:time, but the majority of the plants remained:'small, with occasional large
plants here andthere. Thus., the mean head weight, although small (table 2). repre-
sents only the average between large heads and very small ones (in the border of
being culls). The color of the plants was not exactly bluish-green, but rather dark
green with round well formed heads with long cores. As indicated before, the lack
of uniformity in this particular trial could be due to a large number of inbreds or
to othercauses. The proportion of small heads was large in these hybrids, but those
marketable did'not show black spots inside or out.

Lines 21 to 23 inconclusive, Badger hybrid, and hybrids No. 3 and 4 from
Rohnert Seed.Co., produced small heads, not too uniform, but without black spots.
Lines 24 and 25, from Rohnert yielded medium size heads, but with some black spots.
Lines 26 and 27 from Ferry Morse were uniform with a high percentage of 'first cutting
The plants, bluish-green in color,tended to be slightly too large and showed black
spots,;large core. and high percentage of hollowness.

S In the observational trial none of the hybrids appeared promising.

Key to Hybrid Cabbage Tables ,

Source of seed: Name of company or individual supplying the seed; FM-Ferry Morse
Seed Co. Salinas, 'California; Bur- Atlee Burpee Seed Co., Philadelphia, Pa.; JH-
Joseph Harris Seed Co. Rochester, N. Y.; UW University of Wisconsin (Dr. P. H.
Williams); ASG Asgrow Seed Co,, Milford, Conn; Roh Rohnert Seed Co., Hollister,
California. : :.

Days to maturity: Number of days from seeding to first cutting

Total weight: Weight in pounds of all heads harvested from plot.

Marketable weight.: ,Weight in pounds of marketable heads,

Marketable number:,. Number of marketable heads. .

Weight per head: Mean weight of head: Lbs. of marketable heads
Number of marketable heads
Percentage of first cutting: Weight percentage of first cutting in relation-to total
,numbertof cuttings of marketable heads.

Color: : Eyeball appreciation of color: PG.=-pale green; MG = Medium green; DG,=
dark green; BG = bluish green; -GG.:= greyishh green.

Hollowness percent: Eyeball appreciation of hollow spaces in five marketable heads
taken at random and cut along the stem axis; i.e. 20% hollowness .indicates that





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about 20% of the inside head is hollow. A head could be hard to touch, but still
present hollow spaces inside, particularly along the lower part of the core. .How-
ever, hollowness in general could be interpreted as indication of the solidity of
the heads.

Black spots inside and outside: The outside black spots refer in most cases to
those produced by bacteria; they are relatively large and generally numerous.
The inside dark spots are more elusive to describe, Sometime they are called black
specks, because of a number of very little pinpoint marks in certain parts of the
heads. Marginal necrosis is a darkening of the margin of the inside leaves.: Since
either one of the dark inside discolorations renders the head difficult to market,
they were grouped as black spots. The examination of the heads for black spot,
was done ,on heads classified as marketable after the weight and count were obtained.
Therefore the yields should be interpreted accordingly.

Mean plant stand Average number of plants per plot from the four replications.

Crates per acre: Estimated on the basis of mean weight of heads. It is reported
as the number of heads to make a 50 pound crate.

Shape of head: The ratio between the stem diameter and the transverse diameter,
thus, a ratio 1.0 indicates a round head, a ratio 1.2 indicates an elongate or
ovate head, and a.ratio 0.99 or less .indicates a flat head,











EES66-3
500 copies









Experiment 514. Table 1- Cabbage Replicated Variety Trials. Seeded February 4, 1965, and Harvested, May 12 to May 28,
:. 5 L1965, A. Duda Farm, Belle Glade, Florida.




) Black Spots
S4 -4 0 .0 ,0 U 0 -
9 % 3 JW 4 J I
0) A"P r 4 U S4 UI
0 4) E) O U

14 W 9 t4 4 0 0 j P



2. Expt. hybrid,.#2 F.m. 113 300 300 98 2.72 93 BG 17 0 2.5 35 1087 1.1
$4 U) 0 a u 0 '., a o 4) P 4



Expt. hybrid, 113 291 289 2.98 95 BG 13 0 2.5 31 1050 1.1
Varietybrid #8 F.. 113 31 315 112 2.45 94 BG 12 0 1.0 37 1112 1.0
Expt.hybrid King Cole #9 F.M. 1097 223 218 9954 2.63 91 BG .23 2 0.0 35 1000 0.9
2. Expt. hybrid, E-420 F.M. 1130 464 464 124 3.51 93 BG 17 0 2.5 35 1087 1.2
3. Expt. hybrid,#5 -403 F.M. 102 426 373 78 3.15 82 BG 13 0 2.5 31 1050 1.0
4. Expt. hybrid, #8E-4204 F.M. 113 315 315 112 2.45 99 BG 12 0 1.0 37 1112 1.0
5. Expt. hybrid, s9 F.M. 109 276 276 99 2.10 91 BG 8 0 0.0 35 1000 0.9
6. Expt. hybrid, E-4201 F.M. 109 464 464 124 3.51 92 BG 11 1 1.5 39 1684 1.2
7. Expt. hybrid, E-4203 F.M. 102 426 373 78 3.15 82 BG 20 0 3.0 32 1352 1.0
8. Expt. hybrid, E-4204 F.M. 102 311 281 102 2.83 99 BG 15 0 2.0 33 1020 1.1
9. Expt. hybrid, E-4205 F.M. 102 314 235 86 2.42 96 BG 19 0 3.0 29 853 1.0
10. O.S. Cross, 5203-H Bur. 111. 400 400 101 3.80 95 MG 39 0 3.0 39 1452* 0.6
11. Emerald CroSs, 5067 H Bur. 97 201 186 44 1.84 68 BG 20 1 9.0 25 674 1.1
12. Market topper, 278y J.H 102 393 348 71 3.27 76 BG 15 8 4.0 33 1259 1.2
13. Market Prize, 283 j.H 106 350 350 111 3.01 93 BG 15 3 4.0 35 1271 1.1
14. Market topper, 278 .J.H 103 298 290 80 2.87 94 BG 18 4 4.5 27 1051 1.1
15. C-2W7 J.H 109 253 253 70 2.75 87 BG 15 3 3.5 31 917 1.1
16. Badger Market, Check ASG 97 138 137 31 3.04 79 MG 16 0 3.0 15 498 0.9
17. Copenhagen Market 97 136 128 32 2.37 72 MG 17 0 3.5 32 465 1.0

LSD .05. 2
258
LSD .01 _345
I/ See key to tables oame kei- h e. *Not marketable as fresh cabbage.








-6-


Experiment 514. Table 2. Cabbage Observational Trials. Seeded February 4, 1965,
and Harvested May 13 to 28, 1965. Belle Glade, Florida.


Black
e Spots









17a. Hybrid 479x330 U.. 97 32.5 26.0 16 1.6 83 DG 15 0

18. Hybrid, 336x325 U.W. 100 16.5 16.5 9 1.8 70 DG 20 0
19. Hybrid, 325x336 U.W. 100 59.8 47.0 27 1.7 67 DG 15 0 0
20. Hybrid, 330x479 U.W. 100 29.9 20.3 14 1.5 80 DG 15 0 0
21. Badger hybrid,
Badger Belle Ro 97 25.1 25.1 15 1.7 41 MG 15 0 0
2. Hybrid, Expt. No. 3 Rob 97 57.1 35.1 22 1.6 64 10 0 0
3. Hybrid, Expt. No. 4 Roh 97 50.6 37.6 29 1.3 63 15 0 0
24. Hybrid, Expt. No. 3(2192) Rob 97 77.5 59.5 23 2.6 79 10 0 1
. Hybrid, Expt. No. 1 Roh 97 91.0 72.5 32 2.3 79 15 1 1

26. Hybrid, f-E-4202 F.M. 100 101.2 101.2 31 3.3 96 BG 20 3 2
Va7. Hybrid, F-#4 F.M. 104 70.8 70.0 27 2.6 0 1

17a. Hybrid, 479x330 U.W. 97 32.5 26.0 16 1.6 83 DG 15 ( 0
18. Hybrid, 336x325 U.WV. 100 16.5 16.5 9 1.8 70 DG 20 ( 0
19. Hybrid, 325x336 U.W. 100 59.8 47.0 27 1.7 67 DG 15 0 0
20. Hybrid, 330x479 U.W. 100 29.9 20.3 14 1.5 80 DG 15 0 0
1. Badger hybrid,
Badger Belle Roh 97 25.1 25.1 15 1.7 41 MG 15 0 0
2. Hybrid, Expt. No. 3 Roh 97 57.1 35.1 22 1.6 64 10 0 0
3. Hybrid, Expt. No. 4 Roh 97 50.6 37.6 29 1.3 63 15 0 0
4. Hybrid, Expt. No. 3(2192) Roh 97 77.5 59.5 23 2.6 79 10 0 1
5. Hybrid, Expt. No. 1 Roh 97 91.0 72.5 32 2.3 79 15 1 1
6. Hybrid, f-E-4202 P.M. 100 101.2 101.2 31 3.3 96 BG 20 3 2
7. Hybrid, F-#4 F.M. 104 70.8 70.C 27 2.6 91 BG 20 0 1




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