| Material Information
||Suggested spray programs for disease control on the mango
||2 leaves : ; 28 cm.
||Ruehle, George D
Sub-Tropical Experiment Station
||University of Florida, Sub-Tropical Experiment Station
||Place of Publication:
||Mango -- Diseases and pests -- Control -- Florida ( lcsh )
||government publication (state, provincial, terriorial, dependent) ( marcgt )
non-fiction ( marcgt )
||Statement of Responsibility:
||Geo. D. Ruehle.
||Mimeographed report (Sub-Tropical Experiment Station) ;
| Record Information
||University of Florida
||All rights reserved by the source institution and holding location.
||oclc - 71817698
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
site maintained by the Florida
Cooperative Extension Service.
Copyright 2005, Board of Trustees, University
Mimeographed Report 56-3 March, 1956
University of Florida
Sub-Tropical Experiment Station
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.