Title: Vegetarian
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Permanent Link: http://ufdc.ufl.edu/UF00087399/00551
 Material Information
Title: Vegetarian
Physical Description: Serial
Language: English
Creator: Horticultural Sciences Department, Institute of Food and Agricultural Sciences
Publisher: Horticultural Sciences Department
Place of Publication: Gainesville, Fla.
Publication Date: September 2010
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Bibliographic ID: UF00087399
Volume ID: VID00551
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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Vegetarian Newsletter


A Horticultural Sciences Department Extension Publication on Vegetable and Fruit Crops


Eat your Veggies and Fruits!!!!!


Issue No. 561 September 2010

Sweet Onion Variety Trial, NFREC Quincy Spring 2010

By: Stephen M. Olson, Professor of Horticultural Sciences, North Florida Research and Education Center

Sweet Onion Variety Trial, NFREC Ouincv Spring 2010.


Now is the time to start thinking about planting sweet (short-day) onions. Although sweet onions are a relatively minor crop in
Florida, their value on a per acre basis can be quite high. Production exists as both green tops (immature) and as dry bulbs (mature).
Limited production exists throughout the state. The biggest deterrent for increased production is from competition from established
markets in south Texas and middle Georgia (Vidalia) areas. However, the potential exists for expanding production, especially in the
areas of local sales and direct marketing. The objective of this trial was to evaluate the performance of sweet onion entries under
northwest Florida conditions.
The transplants for this trial were produced from field beds at the NFREC, Quincy. Twenty one entries were seeded on 6 Oct
2009. Seed were planted at rate of about 30 seed per ft into rows spaced 12 inches apart. Preplant fertilization of seedbeds was 40-
40-40 lbs/A ofN-P205-K20. Dacthal W 75 was applied over the top at 10 lb/acre after seeding. Seedbeds were top dressed once with
34 lbs N/A. Entries were transplanted into the production field on 14 Jan 2010. The quality of plants when pulled and transplanted
was poor. Soil type was an Orangeburg loamy fine sand. Total fertilization was 190-100-160 lbs/A of N-P205-K20. Production










scheme was 3 rows spaced 15 inches apart under a 6 ft tractor and in-row spacing was 4 inches (65,340 plants/acre). Goal 2XL at 2
pts/acre was applied on soil surface before transplanting. Registered pesticides were applied as needed to control pests.
Entries were harvested as they matured. Maturity is defined as 50% or more of the tops of an entry had fallen down naturally.
Bulbs were lifted, allowed to dry for a few hours and tops and roots removed. Bulbs were then placed in bushel baskets and dried for
72 hours at 1000 F in large drying rooms. After drying time was complete, onions were removed, allowed to cool down and graded.
Grading consisted of discarding culls (small onions, splits, off color and decayed bulbs) and sizing into medium (1.5-2 inches), large
(2-3 inches) and jumbo (>3 inches) categories. Bulbs were then weighed and counted.
Harvest occurred from the period of 22 April to 18 May. Total yields ranged from 1,111 50 lb bags/acre for 'HA-10229' to
214 50 lb bags/acre for 'Sweet Jasper' (Table 1). Yields were poor to excellent in 2010 and weather was severe. We had one of the
coldest winters on record and had 10 straight days where morning temperatures were below 32 F. 'HA-10229' produced the largest
bulb at 16.0 oz and 'Honeybee' produced the smallest at 5.7 oz. Percent marketable bulbs ranged from a low of 35.2 % for 'Sweet
Caroline' to a high of 99.8 % for 'WI-3115'. Days to harvest from transplanting ranged from 97 days for 'Frontier', 'Sweet Deal' and
'Honeybee' to 123 days for 'Ringo', 'Carmelo' and 'Sweet Jasper'.


Table 1. Onion Variety Trial Spring 2010. NFREC, Quincy.











Entry Source Yield (50 lb bags/acre) Marketable Bulb wt. Bolts Days to
LargeA Jumbo Total (%) (oz) (%) harvest


HA-10229
Dawn
WI-3115
Sugar Belle
Prowler
Amelia
Serengeti
Frontier
Don Victor
SSC 1535

Sweet Deal
SSC 2893
Century
Ringo
Gobi
Goldeye
Honeybee
Sweet Harvest
Sweet Caroline


Hazera
Wannamaker
Wannamaker
Shamrock
Nunhems
Wannamaker
Nunhems
Wannamaker
Nunhems
Shamrock
Shamrock
Shamrock
Seminis
Shamrock
Nunhems
Seminis
Shamrock
Sakata
Nunhems


17 hi
103 de
122 d
30 g-i
68 e-g
138 cd
78 ef
120 d
47 f-i
78 ef
190 b
172 bc
13 i
Ili
58 f-h
25 hi
228 a
46 f-i
5i


1091 a
654 b
603 bc
658 b
605 bc
497 b-d
551 b-d
493 b-d
575 bc
506 b-d

348 de
336 de
496 b-d
481 b-d
408 c-e
449 b-d
202 e
400 c-e
337 de


1lll a
766 b
736 bc
695 b-d
682 b-e
652 b-f
642 b-f
630 b-f
628 b-f
593 b-f

559 c-f
541 c-g
512 d-g
494 d-g
481 e-g
478 e-g
461 fg
452 fg
343 gh


89.1 ab 16.0 a 1.5 e-g 119
99.4 ab 9.2 f-h 2.8 d-f 102
99.8 a 9.0 f-i 2.5 d-g 102
83.2 a-c 11.0 c-e 1.9 d-g 112
87.3 ab 10.7 c-f 6.4 b 112
98.7 ab 7.6 h-k 5.6 bc 102
81.0 b-d 9.8 e-g 3.7 c-e 116
98.6 ab 8.5 g-j 9.3 a 97
70.1 c-e 12.2 bc 0.6 fg 116
98.5 ab 7.4 i-k 3.9 c-e 102

99.5 ab 6.9j-L 0.4 fg 97
99.7 a 6.5 kl 0.1 g 102
56.6 e 11.8 b-d 2.3 d-g 119
61.2 e 12.8 b 3.7 c-e 123
64.6 de 10.2 d-g 4.1 cd 116
58.5 e 10.6 c-f 1.9 d-g 116
99.2 ab 5.71 0.4 fg 97
58.4 e 10.3 d-f 2.5 d-g 119
35.2 f 13.1 b 2.1 d-g 119










Caramelo Nunhems 34 g-i 202 e 247 h 39.5 f 9.3 e-h 0.6 fg 123
Sweet Jasper Sakata 8 i 202 e 214 h 33.9 f 10.5 c-f 0.6 fg 123

A Large = 2-3 in. diameter; Jumbo => 3 in. diameter bulbs; Total = Large & Jumbo.
B Mean separation by Duncan's Multiple Range Test, 5 % level of significance.




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