Group Title: 54- 2
Title: Spray program for unstaked sandland tomatoes
Full Citation
Permanent Link:
 Material Information
Title: Spray program for unstaked sandland tomatoes
Series Title: Everglades Station Mimeo Report
Physical Description: 1 leaf : ; 29 cm.
Language: English
Creator: Darby, J. F
Everglades Experiment Station
Publisher: Everglades Experiment Station
Place of Publication: Belle Glade Fla
Publication Date: 1953
Subject: Tomatoes -- Diseases and pests -- Florida   ( lcsh )
Fungicides -- Florida   ( lcsh )
Genre: non-fiction   ( marcgt )
Statement of Responsibility: J.F. Darby.
General Note: "September 1, 1953."
General Note: Caption title.
 Record Information
Bibliographic ID: UF00067591
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 65519471

Full Text


J. F. Darby
Assistant Plant Pathologist
Indian River Field Laboratory, Ft. Pierce

The four diseases which regularly occur on unstaked tomatoes grown
on the sandy soils of southern Florida are late blight, Phytophthora
infestans (Mont.) DBy., gray leaf spot, Stemphyliu solani Veber, gray
mold, Botrytis cinerea Fr., and bacterial spot, Xanthomonas vesicatoria
(Doidge) Dows. Unfortunately, no single fungicidZe wi' I control all four
diseases; however, this difficulty can be largely overcome by using the
proper fungicide at the right time. The following spray program should
result in a better control of all diseases and consequently a higher
yield should be obtained than if a single fungicide were applied on a
straight schedule.

Recommended Spray Schedule

The suggested fungicide program for unstaked tomatoes grown on
sandy soils of southern Florida is as follows: Begin applications on a
weekly schedule with either 2 pounds of zineb or l1 to 2 pounds of Yanzate
per 100 gallons of water. After the young plants have reached 6 to 8
inches in height, 2 quarts of nabam plus 3/l pound of 36 percent zinc
sulfate (or its equivalent) may be substituted or used as an alternate
with zineb or Eanzate. If bacterial spot becomes a threat, a suitable
form of copper (Copozim, Tribasic Copper Sulfate, Copper A etc.) used
at the rate to include l pounds of metallic .copper per 100 gallons of
spray may be alternated with one of the above materials, if late blight
is not in the area. The first application of Phygon for the control of
gray mold should be made just before "laying by" the tomatoes. Another
application of Phygon should be made immediately after "laying by".
For the next four to six weeks a program alternating nabam plus zinc
sulfate and Phygon on a 5-day schedule should be followed. The total
number of Phygon applications necessary for good control of gray mold
has not been determined, but indications are that a minimum of six
is necessary. After this period, if late blight or gray leaf spot are
not in the area, intervals between sprays may be lengthened to one week.
A thorough coverage of all foliage is very important. On mature plants
a minimum of 250 to 300 gallons of spray per acre is necessary to ad-
equately cover the foliage.

1/ Will be published in Florida Grower and Rancher, October, 1953.
il- *.ili- 4*1 * *a

Everglades Station Mimeo. Report 54-2
Belle Glade, Florida
September 1, 1953

University of Florida Home Page
© 2004 - 2010 University of Florida George A. Smathers Libraries.
All rights reserved.

Acceptable Use, Copyright, and Disclaimer Statement
Last updated October 10, 2010 - - mvs