Group Title: Watermelon field day.
Title: Watermelon field day. 1956.
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Permanent Link: http://ufdc.ufl.edu/UF00076045/00001
 Material Information
Title: Watermelon field day. 1956.
Series Title: Watermelon field day.
Physical Description: Serial
Language: English
Publisher: Watermelon and Grape Investigations Laboratory, University of Florida
Publication Date: 1956
 Subjects
Spatial Coverage: North America -- United States -- Florida
 Record Information
Bibliographic ID: UF00076045
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144617905

Full Text
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PROGRAM


Welcome to Lake County and the Watermelon Field Day.
Norris, Lake County Agent.


R. E.


Introduction of Visitors. Forrest E. Myers, Assistant Vegetable
Crops Specialist, Agricultural Extension Service, Gainesville,
Florida.

Grape Studies at the Watermelon and Grape Investigations
Laboratory. Loren H. Stover, Assistant in Horticulture.

Tour of Watermelon Plots. N. C. Schenck, Assistant Plant
Pathologist and J. M. Crall, Plant Pathologist in Charge.

Discussion on Watermelon Insecticides, Fungicides, and Fertilizers.
E. G. Kelsheimer, Entomologist, Gulf Coast Experiment Station,
Bradenton; N. C. Schenck: J. M. Crall


L.ATZL..LON .JID GRAPE IN'VESTIGATI,:ES LABORATORY 1M11L :L;ORT 56-1







WATERMELON FIELD DAY


WATERMELON AND GRAPE INVESTIGATIONS LABORATORY
OF THE
UNIVERSITY OF FLORIDA AGRICULTURAL EXPERIMENT STATIONS



June 6, 1956, 1:30 P.M.








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WATERMELON PLOTS (SLUT-HRIES OF EXPERI:IENTAL WORK)

_1. Maleic Hydrazide as a Male Blossom Suppressant

Purpose: to determine whether maleic hydrazide under Florida
field conditions might suppress production of male blossoms.


Treatments:
rows 2-10:
11-19:
20-28:


MH at 1000 6000 ppm, 3 applications
MH at 1000 6000 ppm, 2 applications
MH at 1000 6000 ppm, 1 application


Results: IH suppressed vegetative growth and delayed flowering,
particularly at higher concentrations, but male blossoms, with
apparently fertile pollen, vere produced eventually even after
3 applications at 6000 ppm.


Observational Plots, including Southeastern Regional Entries.


Dates of planting: February 21;
Cannonball, March 16.


except N. H. Midget and


Entries:

Row No.
B 1
2-3
4-5
6-7
8-9
10-11
12-13
14-15
16-17
18-19
20-21
22-23
24-25
26-27
28-29

D 1
2
3
4
5
6-7
8-9


Entry No.
Fairfax
N.H.Midget
Tri X-315
Sugar Baby
Tri X-317
Georgia 4
Georgia 3
Louisiana 1
Cannonball
Iississippi 1717
Arkansas 55-11
Charleston Gray
-\hhitehope
VBL 55-6
Cong o

Ironsides
Kissimmee melon
Pedro CB
C54-1
C54-2
*;-51-23W
Chris-Cross


Row No.
C 1
2-3
4-5
6-7
8-9
10-11
12-13
14-15
16-17
18-19
20-21
22-23
24-25
26-27
28-29


10-11
12-13
14-15
16-17
18-19
20-29


Entry No.
Congo
Charleston Gray
:Wrhitehope
VBL 55-6
Congo
N. H. Midget
Tri X-315
Sugar Baby
Tri X-317
Georgia 4
Georgia 3
Louisiana 1
Cannonball
Mississippi 1717
Arkansas 55-11

-;:14 53
BlackDiamond
PI 183217
PI 183217 open
PI 183217 open
Charleston Gray
(Seed Treatment)


1956 Release.
S Tentatively scheduled for 1957 release.







-3-


3. Cantaloupe Varieties

Row No. Line

E 1, 29 Hale's Jumbo
2, 11, 20 Smith's Perfect
3, 12, 21 Hale's Best 36
4, 13, 22 Rio Gold
5, 14, 23 PMR 45
6, 15, 24 Georgia 47
7, 16, 25 Selection from Ga. 47
8, 17, 26 Sanford 9A-9
9, 18, 27 Sanford CX-15
10, 19, 28 Sanford 27-13

4. Breeding Plots (Ranges F, G, H, I, J, K)

Date of planting: February 21

Ranges F, G, H, I and J are mostly F2 progenies that are
segregating for various characters. Parentage of some of
these lines follows:

54-A26 Stone Mountain type x Charleston Gray
54-A30 Stone Mountain type x Fairfax
54-A34 Garrison type x Charleston Gray
54-A39 Garrison type x Fairfax
54-A43 Garrison type x Congo
54-A44 Garrison type x Cannonball type
54-A54 Cannonball type x Cannonball type

Range K consists of the following:
K 2-8 Fl hybrids
9-17 non-segregating lines
18-29 double crosses or 4-way hybrids

5. Captan Zineb Trial

Purpose: to determine whether cep tan stimulates vegetative
vigor or increases fruit-set in watermelon

Date of planting: February 16 Variety: Charleston Gray

Treatments: 8 applications at 3-14 day intervals beginning
35 days after planting; sticker-spreader used with all
treatments; lindane added as needed; balanced lattice design,
4 replications.






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check, no treatment
Captan 50W, 1953
Captan 75W, 1954
Captan 50W, 1955
Captan 50W, 1956
Zineb
Zineb / Captan 1953
Zineb / Captan 1953
Zineb / Captan 1953


2/100
2/100
2/100
2/100
2/100
2Zzoo
2/ l100
1/1/l00


Results to date: None of the captain sprays has stimulated
vegetative vigor or increased fruit-set.

6. Fungicide Trial

Purpose: to determine the effectiveness of various fungicidal
spray materials in the control of watennelon diseases.


Date of planting: February 16


Variety: Charleston Gray


Treatments: applications were made at 8-24 day intervals;
ranges O,P, and Q received 3 Ep plications and ranges R,S,
and T received 7 applications, with first application 35
days after planting; sticker-spreader used with all treat-
ments; lindane used as needed; ranges Q and T, treatment
rows inoculated with anthracnose and downy mildew; ranges
0 and S, spreader rows inoculated; ranges P and R, not
inoculated; randomized block design, six replications.


Cu, Mn, Zn (34: 8: 8)
Zineb
Nabam / zinc sulfate
Nabam / Cu Mn Zn (2.5:14:14)
Maneb
Zineb / Cu Mn Zn (2.5:14:14)
Check, no treatment
Crag 658
Tribasic copper sulfate


4/100
2/100
2 qts/1/100
2 qts/: 1 1/8 /100
1I/100
1i/ 9/16 /100

2/100
3/100


Results to date: Most prevalent diseases in the plots are
anthracnose, Cercospora leaf spot, and gummy stem blight;
slight amounts of downy mildew are also present; maneb,
zineb, and nabam plus Cu Mn Zn appear to be slightly superior
in overall leafspot control to nabam plus Zn SOI and much
superior to the copper fungicides (Crag 658, tribasic copper
sulfate,. Cu Mn Zn), which are particularly ineffective against
anthracnose.




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