Title: Potato variety and seedling trials at Hastings, Florida
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 Material Information
Title: Potato variety and seedling trials at Hastings, Florida
Physical Description: Book
Creator: Shumaker, J. R.
Publisher: Potato Investigations Laboratory,
Copyright Date: 1969
 Record Information
Bibliographic ID: UF00076330
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 144485933 - OCLC

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roL 'i *POTATO INVESTIGATIONS LABORATORY
Hastings, Florida

POTATO VARIETY AND SEEDLING TRIALS AT HASTINGS, FLORIDA
J. R. Shumaker, Asst. Horticulturist

Mimeo Report POL 69-3 January 1969

METHODS:

Potato varieties and seedlings were tested for desirable horticultural charac-
teristics in both replicated and observational plantings. Two ounce seed pieces
were planted by hand February 7th on Rutledge fine sand following a sorghum
cover crop. At planting, 2500 pounds of 6-8-8 fertilizer per acre was banded
on each side of the row. A side dressing of 125 pounds per acre of ammonium
nitrate was applied four weeks later. Seed pieces were spaced 12 inches apart
within the row and 40 inches between rows. Recommended practices for irrigation
and disease and insect control were followed. Tubers were harvested and graded
May 20. Samples of selected stocks were shipped to Mr. James Watts, Wise Potato
Chip Company, Berwick, Pa. for chip evaluations. Tubers were stored at an
average temperature of 700F. and humidity of 50% during these evaluations. Chip
color was determined periodically over a four week period. Specific gravity was
determined on three dates by using the weight in air and water method.

RESULTS:

Replicated Trials. Fifteen named varieties, 7 seedling selections, in addition
to Sebago, which is the standard variety to Northeast Florida, were replicated
5 times in a randomized block design. Potatoes were grown in single row plots
which were 10 feet long. Table 1 summarizes the results of these trials. Sebago
was not significantly outyielded by other entries in these trials. It continued
to perform extremely well in chip color evaluations. La Chipper, a variety with
considerable grower interest in this area, produced yields, specific gravity
values, and chip color evaluations essentially equal to those of Sebago. Wauseon,
a recently named variety, and ND-6127-10R, a red seedling, produced tubers of
relatively low specific gravity. However, their yields and chip color evalua-
tions compared favorably with those of Sebago. Lenape, a new variety, which has
high specific gravity produced yields considerably lower than those of Sebago.

Observational Trials. Twenty seedlings and two recently named varieties were
planted in 20-foot-rows. Sebago check rows were planted every fourth row so
that each stock on trial was either flanked or only a row removed from the check.
Table 2 summarizes the results of observational plantings. The variety, Anoka,
and seedling, Pa-TGT-2 show particularly good promise to this area under observa-
tional conditions. Their yields and chip color evaluations compared favorably
with those of Sebago. Tubers of both varieties produced high specific gravity
when compared to those of Sebago.





JA 2 1969

1-15-69
250 Copies ( C ;






Table 1. Yield, per cent of stand, specific gravity, and chip
potato trials at Hastings, Florida.


color2/results of 1968 replicated


Variety Average2/ Chip Colora/
or Yield (cwt/acre) Per cent Specific Days After Harvest
Seedling USIA US1B Total4/ of stand Gravity 4 9 33
Red LaSoda 272 2.2 332 100 -
Reliance 268 2.0 304 95 1.0648 6 6 6
Red Pontiac 267 2.6 334 100 -
La Chipper 263 -0- 298 97 1.0753 1 2 3
Redskin 258 0.6 318 100 -
Catoosa 254 2.4 283 100 -
Sebago 252 2.2 283 100 1.0752 2 1 2
Alamo 251 1.5 313 100 1.0720 4 5 4
Huron 248 2.2 299 100 1.0791 3 6 5
ND-6127-10R 246 1.7 291 98 1.0699 3 2 2
Wauseon 243 1.3 263 98 1.0648 2 2 3
B5063-3 231 2.6 325 100 -
Pungo 230 2.4 271 98 1.0744 3 4 4
Ona 229 0.7 251 100 1.0704 3 5 4
Pa-6RF-1 211 1.1 256 98 1.0780 1 4 3
Norchip 206 2.8 255 98 1.0798 2 3 3
Pa-6HS-9 201 -0- 260 100 1.0786 5 3 2
Oromonte 199 6.3 228 87 1.0716 5 3 4
Lenape 197 3.0 246 100 1.0967 3 4 2
Superior 166 1.1 197 93 1.0745 5 2 2
Pa-6RM-l 141 0.7 167 72 1.0755 2 4 4
Pa-6cx-6 137 3.3 160 80 1.0783 3 2 5
Pa-CIE-1 99 2.2 145 65 -
LSD .05 40.3 39.7

1/ Specific gravity and chip color evaluations were determined by James Watts, Horticulturist,
Wise Potato Chip Company, Berwick, Pa.
2/ Average specific gravity was computed from determinations taken at 4, 11, and 32 days after
harvest.
/ Chip color values are based: 1-4 acceptable color; 5 borderline color; and 6-14 color too
dark for use.
4/ Includes pick-outs.


POL 69-3 Page 2






Table 2. Yield, per cent of stand, specific gravity and chip
observational trials at Hastings, Florida.


colorl/results of 1968 potato


Variety Average2/ Chip Color-3
or Yield (cwt/acre) Per cent Specific Days After Harvest
Seedling US1A US1B Total4/ of stand Gravity 4 9 33
Pa-TGT-2 236 3 256 100 1.0829 2 2 2
Anoka 224 2 250 86 1.0790 1 1 2
Minn-148 206 3 230 96 1.0749 2 3 4
Pa- BE-3 198 3 228 100 1.0797 1 2 2
Minn-12 175 6 202 100 1.0774 4 4 3
La-52-71 174 1 231 96 1.0666 3 3 4
Pa-6ZZ-2 172 -0- 236 100 -
Minn-144 169 4 211 86 -
La-51-2 168 4 190 96 1.0684 3 3 4
Minn-172 158 3 199 92 1.0667 2 3 4
La-41-182 156 -0- 187 100 1.0702 2 2 3
Viking 149 1 195 79 -
La-42-225 145 2 197 96 1.0719 5 5 5
Pa-6VC-i 134 -0- 198 100 -
La-51-51 132 6 154 96 1.0725 4 3 3
Pa-6XG-5 122 4 197 92 1.0840 5 6 5
Pa-6UU-6 116 4 149 100 -
La-11-150 107 5 130 100 1.0598 3 4 3
Pa-7HH-1 100 3 117 100 -
La-31-19 95 1 116 100 -
Pa-7BC-1 94 2 177 100 -
Pa-7Al-4 81 6 130 96 -
Sebago (check) 226 3 253 96 1.0752 2 1 2
average of 8

l/ Specific gravity and chip color evaluations were determined by James Watts, Horticulturist,
Wise Potato Chip Company, Berwick, Pa.
2/ Average specific gravity was computed from determinations taken at 4, 11, and 32 days
after harvest.
3/ Chip color values are based: 1-4 acceptable color; 5 borderline color; and 6-14 color
too dark for use.
_/ Includes pick-outs.


POL 69-3 Page 3




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