Group Title: Plant pathology mimeograph series
Title: Control of the common diseases of roses in Florida
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Permanent Link: http://ufdc.ufl.edu/UF00090274/00001
 Material Information
Title: Control of the common diseases of roses in Florida
Alternate Title: Mimeograph series - University of Florida Dept. of Plant Pathology ; 58-1
Physical Description: 2 leaves : ; 28 cm.
Language: English
Creator: Miller, H. N.
University of Florida -- Dept. of Plant Pathology
Publisher: Dept. of Plant Pathology, University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 1958
Copyright Date: 1958
Edition: Rev. ed.
 Subjects
Subject: Roses -- Diseases and pests -- Control -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: H.N. Miller.
General Note: Caption title.
General Note: "2/26/58"--Leaf 2.
 Record Information
Bibliographic ID: UF00090274
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 262524010

Full Text
/_ &, ~ L~


Plant Pathology
Mimeograph Series


No. 58-1 (Revised)


Gainesville, Florida


CONTROL OF THE COMMON DISEASES OF ROSES IN FLORIDA
H. N. MILLER, Department of Plant Pathology
Florida Agricultural Experiment Station


Disease Description Material Formula Remarks


BLACK SPOT


POWDERY MILDEW


CERCOSPORA
LEAF SPOT


DIEBACK


Black spots and patches with
irregular or feathery margins
on leaves


Whitish irregular blotches
on leaves and twigs. Roll-
ing or distortion of leaf
edge


Brown spots with gray centers,
regular margins.



Blackening of stems and dying
back from tip or pruning cut.
Sometimes wilting of shoots.


Captan (50%)
wettable
or
Maneb (Manzate)
(70%) wettable
or
Ferbam (7-10%)
dust


Karathane
(25%) wettable


Sulfur dust
(325 mesh)

Maneb (70%)
wettable


4 tsp/gal.


2 tsp/gal.


6 tsp/gal.


Remove infected and fallen leaves.
Spray at weekly intervals, cover-
ing both leaf surfaces thoroughly.
More frequent applications may be
needed during the "rainy" season
When black spot is most troublesome.
s Dus,\every 3-5 days, during early
c mo i~ or late afternoon. Cover
^ thor ly.

CN Spray ai weekly intervals. Mildew
> is n /troublesome during summer
s mons.


Sulfur may cause injury at temper-
atures above 85 degrees F.

This disease is most serious on
poorly grown plants. Fungicides
only partially effective. Improve
growing conditions.


Remove by pruning,
low infected wood.
pruning compound.
conditions


cutting well be-
Paint cut with
Improve growing










Description


CANKER


CROWN GALL


NEMATODES
(root knot)

(other species)


Localized diseased areas on
stem. Gray lesions with
reddish, regular margins or
indefinite light brown areas.

Somewhat rounded galls,
with rough, irregular sur-
faces on stems near ground
line, on roots, occasionally
on aerial parts.


Nodule-like swellings or
small galls are formed
on the fibrous roots.
Cause injury or loss of
feeder roots.


Methyl
bromide


1 lb.
25 sq. ft.


Same as DIEBACK. A regular spray
program for Black spot control will
keep these diseases in check.


Control by exclusion. Plant only
gall free new plants. Remove
infected plant dig out surrounding
soil and replace with new.
Fumigate areas known to be infested
before replanting.


Plant nematode free stock.


D-D Mixtures


Methyl
bromide

Vapam


Mylone


1/2 tsp. per
sq. ft. in
12 inch
spacings.

1 lb. per
25 sq. ft.

1 qt. per
100 sq. ft.

3/4 lb. per
100 sq. ft.


Pre-planting soil treatments for
nematode and weed control. Follow
manufacturers directions for
application.


- 250 copies.


Disease


-2-


Material


Formula


Remarks


2/26/58
bn




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