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Title: Cultural directions for growing mangos in Florida
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Permanent Link: http://ufdc.ufl.edu/UF00067819/00001
 Material Information
Title: Cultural directions for growing mangos in Florida
Physical Description: 2 leaves : ; 28 cm.
Language: English
Creator: Ruehle, George D
Sub-Tropical Experiment Station
Publisher: University of Florida, Sub-Tropical Experiment Station
Place of Publication: Homestead Fla
Publication Date: 1952
 Subjects
Subject: Mango -- Fertilizers -- Florida   ( lcsh )
Mango -- Diseases and pests -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: by Geo. D. Ruehle.
General Note: "Copied from: Florida Sub-Tropical Gardener, Part II, 1(4):17, Dec. 1952; Continued from November issue."
General Note: Handwritten note: "Copied almost verbatim from Mimeo.graph report 10 without Dr. Ruehle's knowledge. signed A. Moye"?
 Record Information
Bibliographic ID: UF00067819
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 72439737

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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




Subtropical Experiment Station

Copied from: Homestead, Florida
Florida Sub-Tropical Gardener rouTE 560
Part Ii, 1() 17, Dec. 1952 W/,

1,r CULTURAL DIEECTIOINS FOR ?A,
SING MAIGOS L AI"WIDA

By Dr, George D, Ruehle
Assistant Director of University of Florida Sub-Tropical Experiment Station

(Continued from November issue)
*
r'mini g iHanasos.-he only pruning usually given the mango consieatts in
cutting out dead wood, With varieties producing dense tops, such as Muloob-, and
to a lesser extent, the Haden, there is some evidence that pruning out slender
branches and weak wood from the center of the tree is beneficial, This admits
light and air to the fruit which sets in the top, makes it easier to cover the fruit
with protective sprays for anthracnose control and promotes the development of
better skin color in red varieties. Such pruning is probably best done after the
summer flush of growth has hardened,

I"X exsSraS3 In,.urs.--The occasional occurrence of freezing tenperatures a
constitutes the greatest natural hazard in the growing of mangos in Florida. Trees
up to three or four years of age may be killed outright at temperatures of 280 F,*
In general, as the trees become older they can withstand lower temperatures without
serious injury, Artificial heating can be depended upon to protect the foliage and
blossoms during mild freezes if practiced properly. On young trees, artificial
heating may protect the foliage adequately but frequently fails to prevent injury to
the trunks near the ground line, Added protection to this area will be provided
by tying bundles of dried gr.s? or straw around the trunks from the ground line to
the main framework branches. The wrapping material should be 2 to 3 inches thick
and bound tightly to the trunk, Trees should be wrapped before frost danger threat-
ens and, the wrappings removed as soon as the danger period has passed in the
ynring,

DISEASES AID PESTS

Anthragnose,--The most common and widespread 1Frngus disease of the mango is
anthracnose,

The various manifestations of the disease include blossom blight, leaf spot,
fruit russetting or staining, and fruit rot. Infections on the bloom and setting
fruits are often severe and constitute an important phase of the disease. Injury
from the disease is closely dependent upon humidity, the prevalence of rains or
heavy dews during the critical period for infection greatly increasing its incid-
ence,

Control Mi Anthracnose.--Bordeaux mixture is the most reliable fungicide thus
far tested for control of anthracnose, The 6-6-100 (6 lbs, bluestone, 6 lbs.
hydrated lime, 100 gallons of water) is recommended, Wettable Cuprocide at 1.5 lbs,
to 100 gallon, tri-basic cor-per sulfate (containing 5$3 metallic copper) at 3 lbs.
to 100 gallons, Copper A compound at 4 lbs, to 100 gallons, and other fixed copper
fungicides will give nearly equal control when substituted for Bordeaux mixture,

The Following spray schedule is recommended for the present until infor-
mation can be secured from further experiments;




Page 2.
1, First bloom spray to be applied when the first bloom clusters have
appeared, but before individual flowers have opened,

2, Second bloom spray applied 7 days after No. 1. Additional bloom sprays
to be applied (if blossoming period is extended) at 7-day intervals if necessary,

3. Applied about 4 weeks after No. 1,, if additional bloom sprays are not made
after Yo. 2.
4, Three to 4 weeks after No. 3.

5. One month after No, 4,

This schedule applies to the first bloom which normally is the main bloom and
generally produces the more desirable fruit,

Scale I secs,--A considerable number of scale insects attack the mango in
Florida and the trees should be examined periodically for infestations, Among the
more important are the mango shield scale, lesser snow scale, Florida red scale,
tesselated scale, mango scale and the Florida wax scale. They all feed by sucking
sap from the plant and they generally tend to increase following the use of copper
fungicidal sprays. Some species, especially the mango shield scale, produce an
abundance of honeydew which serves as a medium for growth of sooty mold fungi, Pre-
guently, the trees become blackened as a result of the accumulation of sooty mold
and its presence is a sure sign that scale insects are present and causing damage,

Oil emulsion sprays are the recommended control for scale insects on mangos,
Refined oils of the mayonnaise type should be used at 1,2 to 1,5 percent concentra -
tions, Thorough coverage is necessary and the spray should be applied at high
pressure in order to obtain a good kill, Repeated applications may be necessary to
control severe infestations, Perhaps the best time to apply a clean-up oil emulsion
is just after harvest is completed. However, in case severe infestations are dis-
covered at other seasons, they should be checked before serious damage occurs,
Spot spraying to eradicate infestations just as they become noticeable is frequently
good economy in combatting scale insects,




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