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Group Title: Processing sweet corn variety trials.
Title: Processing sweet corn variety trials. 1976
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Permanent Link: http://ufdc.ufl.edu/UF00075814/00002
 Material Information
Title: Processing sweet corn variety trials. 1976
Series Title: Processing sweet corn variety trials.
Translated Title: Research Report - University of Florida Agricultural Research and Education Center ; 77-4 ( English )
Physical Description: Serial
Language: English
Creator: White, J. M.
Publisher: University of Florida, Agricultural Research and Education Center
Publication Date: 1976
 Record Information
Bibliographic ID: UF00075814
Volume ID: VID00002
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144607618

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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









AGRICULTURAL RESEARCH AND EDUCATION CENTER
/ Sanford, Florida

Research Report CF 77-4 .-- __ July 27, 1976

Processing Sweet Corn Variety Tr a s, LBRARY
Zellwood, Florida
SSEP 2 7 1977
J. M. White
Assistant HorticulturisI
1LF.AS. Univ. of Florida
Introduction -- ......

The Zellwood area of central Florida has been growing sweet corn for a number
of years. In 1976, over 8, 000 acres of sweet corn were reported harvested in
central Florida for fresh market. None were reported for processing. The
potential for a processor to expand his season by developing in Florida is good as
long as the profit to the farmer growing for the processor is equivalent to that
of the fresh market farmer. Cultural practices for growing processing varieties
are about the same as for fresh market varieties. The equipment for planting,
cultivating, spraying, and harvesting would be the same. For a farmer to grow
processing types of sweet corn, he would need to adjust his harvest maturity
slightly and to plant the variety or varieties which give the best yield and meets
the processor's standards. In investigating this potential, a variety test
specifically for processing sweet corn was undertaken in Zellwood.

Methods

Six processing sweet corn varieties plus Gold Cup and lobelle E. H. were
evaluated in replicated trials on Everglades mucky peat soil in Zellwood in the
spring of 1976.

Prior to planting, 600 pounds per acre of 5-5-8 fertilizer and a two per cent
parathion bait for wireworm control at the rate of 40 pounds material per acre
were broadcast and disked to incorporate, Seeds were planted, two kernels per
drop, eight to nine inches apart. Plants were hand thinned to one plant per nine
inches three weeks after emergence. Atrazine at two-third pound plus Alachlor at
two pounds per acre were applied for weed control prior to planting. Methomyl
was used on a daily basis from silking until harvest for the control of corn earworrr.

The first planting was made on March 10. A completely randomized block
design was used with five replications. Plots were three rows, three feet on
center and 29 feet long. Harvest began on May 24 and ended on June 6,

A second planting of seven varieties was made on April 9. A completely
randomized block design was used with six replications. Plots were three rows,
three feet on center, and 15 feet long. No fertilizer was used and the herbicide
was three pounds/acre of Randox plus three pounds per acre of Vegadex. The
first harvest was on June 18 and the last on June 24.











Results and Discussion

The results of the first planting on March 10 are presented in Table 1. The
second planting results are presented in Table 2.

There was no significant difference in dozen of ears produced per acre in
either the first or second planting. The first planting had a higher yield in
dozens of ears per acre produced (1528) than the second planting (1501).
H 75201-27 produced the highest tons of unhusked ears per acre with 8.4 tons
in the first planting. Iobelle E. H. did not do as well in the first planting, but
lead the tons per acre with 9.8 tons in the second planting. H 75201-27 was not
in the second planting.

It is interesting to compare the differences found in the composite averages
between the two plantings (Table 3). The first planting had more ears, less
tons per acre, shorter ear length, and width (diameter), but higher stalks and
ears. Ear tip fill was better in the first planting than in the second. This was
more noticeable in Gold Cup and Tendertreat E. H. Lodging was more serious
in the first planting with H 75201-27 having the most and H 75201-8 with some.
In the second planting, the husk cover was not as good and the exposed tips of
the ears turned green. This was most common in H 75201-38, H 75201-18,
lobelle E. H., and Tendertreat E. H. These differences between plantings may
have been due to either the adaptability of the varieties to early plantings or
the differences in fertilizer rates used.

This test shows that processing varieties are adaptable to central Florida
and could be a potential new market. More work is needed before variety and
planting dates can be recommended.

Acknowledgment

The author wishes to express thanks to General Food Corporation for a gift
to help support this work and for supplying the seeds used in this test.








Table 1.


Average yield, ear size,
Planted March 10, 1976,


and general characteristics of replicated sweet corn varieties for processing.
at Zellwood.


Doz. Avg. Avg. Avg. Ear 6 7 8
Days to ears/ Tons? ear ear ear Rows of tip No. Husk Stalk Ear
Variety harvest acre acre wt. length width kernels fill flags cover height height

H 75201-27 82 1556 8.4 .898 20.1 4.6 16.0 4.0 3.8 3.2 226 87
H 75201-38 84 1567 7.9 .838 21.8 4.9 16.0 2.0 3.6 1.5 222 71
Tendertreat E.H. 86 1513 7.9 .866 22.8 4.9 14.2 3.6 1.5 1.3 257 102
H 75201-18 83 1556 7.1 .756 21.6 4.6 14.5 3.5 3.4 1.3 233 83
H 75201-8 83 1530 6.8 .739 19.8 4.6 16.0 4.0 4.2 3.8 240 98
Iobelle E.H. 80 1555 6.7 .722 21.4 4.7 14.5 3.8 3.2 2.0 237 85
Gold Cup 75 1429 6.1 .714 18.4 4.5 15.6 4.6 6.8 5.0 206 79
H 75201-54 81 1515 6.0 .660 20.2 4.6 16.3 3.5 3.4 3.7 231 95
LSD .05 N.S. .418


Table 2. Average yield, ear size,
Planted April 9, 1976, at


and general characteristics of replicated sweet corn varieties for processing.
Zellwood.


3 4 4 5
Doz. Avg. Avg.. Avg. Ear 6 7
SDays to ears/ Tons ear ear ear Rows of tip No. Husk Stalk Ear
Variety harvest acre acre wt. length width kernels fill flags cover height height

lobelle EH. 75 1690 9,8 .975 22.6 4.8 17.2 3.5 5.8 1.7 197 77
H 75201-54 75 1634 9.4 .963 21.7 5.0 17.7 3.6 5.2 2.4 198 72
H 75201-38 75 1487 9.4 1.045 22.7 5.3 16.5 3.6 7.0 1.6 191 51
Tendertreat E.H. 77 1396 8.1 .970 23.0 5.1 17.3 1..6 4.7 1.8 219 83
H 75201-18 75 1540 7.5 .802 21.0 4.7 16.5 2-4 4.8 1.7 195 72
Gold Cup 71 1592 6.7 .697 18.9 4.5 15.5 3.6 6.8 5.0 179 70
H 75201-8 75 1170 6.5 .935 22.7 4.9 17.3 3.3 5.1 2.3 202 85
LSD 05 N. S. 2.26


As


Amo


AN









-4-


Table 3. Composit average by planting date of yield, ear size, and general
characteristics of replicated sweet corn varieties for processing,
Zellwood, 1976.

Doz. Avg. Avg. Avg. 45
ears/ Tons/ ear ear ear Ear tip Stalk Ear
Date acre acre wt, length width fill height height

March 10 1528 7.1 .774 20.8 4.7 3.6 232 88
April 9 1501 8.2 .912 21.8 4.9 3.1 197 73
1
Varieties ranked by yield in tons per acre of unhusked ears.
2Tons per acre of unhusked ears.
3
Average ear weight in pounds.
4
Average ear length and width in centimeters.
5
Ear tip fill: l=more than 1/2 inch of tip of ear not filled; 5=less than 1/4 inch
of tip of ear not filled.
Husk cover: 1=poor cover, ear exposed; 5=excellent cover with tight husk.
7Stalk height from ground to base of tassel in centimeters.
8
Ear height from ground to base of ear in centimeters.




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