Historic note
 General spray schedule for control...

Group Title: Sub-Tropical Experiment Station - mimeographed report ; no. 56-3
Title: Suggested spray programs for disease control on the mango
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00067802/00001
 Material Information
Title: Suggested spray programs for disease control on the mango
Series Title: Mimeographed report
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: 1956
Subject: Mango -- Diseases and pests -- Control -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
Statement of Responsibility: Geo. D. Ruehle.
General Note: "March, 1956."
Funding: Mimeographed report (Sub-Tropical Experiment Station) ;
 Record Information
Bibliographic ID: UF00067802
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 71817698

Table of Contents
    Historic note
        Page 1
    General spray schedule for control of anthracnose, scab, and powdery mildew on bearing trees
        Page 2
Full Text


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not reflect current scientific knowledge
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represent the historic publishing
record of the Institute for Food and
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site maintained by the Florida
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Copyright 2005, Board of Trustees, University
of Florida

Mimeographed Report 56-3 March, 1956

University of Florida
Sub-Tropical Experiment Station
Homestead, Florida

Suggested Spray Programs for Disease Control on the Mango


Geo. D. Ruehle

The mango in Florida is subject to relatively few serious diseases, but

anthracnose is an extremely important factor in lowering grade and quality of mango

fruit, and in certain varieties it contributes to lack of fruitfulness in some

season.4 This disease makes a program of spraying necessary if the fruit is to be

shipped successfully to distant markets. 'Two other fungus diseases, scab and

powdery mildew, apparently are increasing in importance in some sections of the

State/and may have to be considered in the spray program.

The following spray schedule applies to the main general bloom which usually

produces the bulk of the crop. Changes in time of making some applications may be

necessitated by variations in seasonal conditions. The first application in the

schedule should be made thoroughly to all parts of the tree top. Only the bloom

panicles and fruits need be covered in later applications.

.Proper spacing of the trees at planting to allow sufficient room for aeration

about the trees, or pruning to provide aeration in closer planted trees, and con-

trol of insects will make the control of diseases by spraying easier. Insecticides

may be added to the fungicides in the spray schedule if the need for insect

control is evident at the time..

- 2 -

General spray schedule for control of anthracnose,
scab, adfl po#efy itildew 6a bearing tkedsv

Time of Application
1. In the main bloom, when first
panicles have appeared but before
individual flowers have opened.

Fungicide per 100 gals. of water
Zineb 41 lbs. + liquid spreader,
Maneb l1 Ibs. + liquid spreader,

Captan 2 lbs. + dry spreader.

Note: If powdery mildew is present or was present the previous year it is
suggested that Karathane 3/4 Ibs. be added to the fungicide.

2. One week after No. 1 Repeat as above

3. One week after No. 2 and repeat Repeat as above. If powdery mildew not
at 7-day intervals as long as evident omit Karathane from this
necessary or practical to protect and following sprays.

4. When crop has set and not longer Yellow cuprous oxide 1 lb. + spreader,
than 7 days after the last or
organic fungicide application. Bordeaux (6 lbs. bluestone, 6 lbs.
hydrated lime) + spreader,
Other standard neutral coppers used at
the same copper content as bordeaux

$. Three to four weeks after No. 4. Repeat with copper fungicides as in
No. 4 but add both liquid wetting
agent and dry spreader.

6. About May 15 or at the time of the Repeat with copper fungicides and
beginning of the rainy season. To spreaders used in No. 5.
control infections at lenticels,
insect stings, and limb rubs.

Note: On late varieties (Kent, Keitt, Palmer and Brooks) especially on old
trees in wet seasons, it is often advisable to spray again in June.

Control of mango scab in nurseries on seedling stock plants or grafted trees.

The scab fungus is able to infect only the young expanding tissues. Keeping the
new flushes of growth protected as they appear by frequent applications of wettable
cuprous oxide at 1 pound per 100 gallons of water plus a spreader, or of some
other neutral copper fungicide used at a comparable rate generally will prevent
damage from this disease. Zinc and manganese may be added to one or more of these
sprays for nutritional purposes.

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