HomeMy WebLinkAbout2003 09 10 Attached Distributed to the BoardDate: September 10, 2003
ATTACHED DISTRIBUTED TO THE
BOARD
City of Winter Springs
CSty Hall Tree Projr#
August 2003
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Code Enforcement
page 2
CITY OF WINTER SPRINGS, FLORIDA
1126 EAST STATE ROAD 434
WINTER SPRINGS, FLORIDA 32708-2799
Telephone (407) 327-1800
Fax (407) 327-6695
3 Ligustrum ( 65 gallon )
7 Queen Palms ( 65 gallon )
2 Southern Magnolia ( 65 gallon )
5 Dahoon holly ( 15 gallon )
1 Red oak ( 30 ~a~lon )
13 Nellie R. Stevens Holly ( 15 gallon )
Attached tree removals
TOTAL
$1,200.00
$2,800.00
$1,300.00
$ 600.00
200.00
$1,300.00
$2,300.00
$9,700.00
Just as a reminder there is still adequate funds in the current
tree bank allotment for miscellaneous individual installments
of right of ways in front of residential homes where trees
have been removed by the city for whatever reasons.
Cytospora or perrenial canker of fruit and shade trees Page 1 of 2
Utah Plant Disease Control No. 15
Revised February 1993
Cytospora or Perennial Canker
of Fruit and Shade Trees
Cytospora Canker or Perennial Canker is one of the most common diseases of fruit and shade
trees in Utah. This canker disease is caused by a fungus called Cytospora. There are several
species of Cytospora that attack many different hosts, but the symptoms and control are
essentially identical for all of them. The host range of Cytospora is broad, including peach,
cherry, apricot, apple, poplar, willow, birch, aspen, and many other broadleaf trees. Stone fruits
are more susceptible to perennial cankers than are pome fruits.
SYMPTOMS
Cytospora is considered a weak parasite and invades only weakened or stressed trees. It
gains entry through injuries in the bark caused by machinery, sun scald, frost, pruning wounds,
broken branches, mechanical shakers, and insect injury. Cankers on trunks or branches are
sunken and range in color from brown to gray depending on the host species. The canker
expands slowly over a period of months or years and may eventually girdle the branch,
causing it to die. The fungus may produce small (1 mm) pimple-like bumps in which black
fungal structures called pycnidia are embedded. The presence of pycnidia can be confirmed by
slicing the bark with a knife where raised areas are evident. Pycnidia are quite common and
obvious on mountain ash, cherry, and birch. During warm, wet weather, brown to orange-
colored masses of spores (analogous to seeds) are extruded from the pycnidia in a tendril-like
mass. These spores are carried by rain or blown by wind to susceptible sites where they cause
new infections. Optimum conditions for Cytospora infec-tions occur in the spring when daytime
temper-atures are 60 to 80F. The fungus continue to grow and produces spores during the
warm weather months.
CONTROL
Preventing infection is the best way to control Cytospora. There are no fungicides which are
effective in controlling the pathogen once it is in the tree. No single method of control can be
used to prevent this disease; therefore, it is necessary to use several of the methods described
below to maintain healthy plants.
Maintain high tree vigor. Trees should be watered deeply during dry summer months to
prevent drought stress. Fertilize in the spring to keep trees vigorous. Avoid late summer
applications of nitrogen because it stimulates growth in autumn which does not harden
off before winter. Trees stressed with iron chlorosis are particularly susceptible to
Cytospora infections. The roots of birch trees are quite shallow and are damaged or
killed by high soil temperatures and drought on south or west facing slopes. Keep soil
cool and moist by frequent irrigation.
Prune out and destroy dead or diseased twigs and branches. Do not leave stubs or
narrow crotches. prune on a regular basis so that large cuts will not be necessary.
http://www.extension.usu.edu/ipm/disfact/upd 15.htm 8/8/2003
C~tospora or perrenial canker of fruit and shade trees
Page 2 of 2
Pruning wounds are susceptible to infections, so prune in the early spring and not when
rain is imminent. Treat pruning cuts larger than one inch in diameter with a paint of 1
thiram or 3-10% Copper Naphthenate. Asphalt pruning paints are not effective. An
application of benomyl as a spray immediately following the pruning of a fruit orchard
may reduce new infections. Benomyl is no longer registered for use on ornamental trees.
. Prevent sunscald by painting the trunk of thin-barked trees with white latex paint. The
trunks of newly planted trees should be wrapped with burlap orwhite-colored tree wraps
to prevent sunburn. These techniques will also reduce winter damage which occurs on
the southwest side of trunks.
. Control borers and other wood-attacking insects.
. Avoid mechanical injury to tree with lawn mowers, lawn trimmers, ladders, shakers, or
other equipment.
. Woodpiles are an important source of inoculum for the disease. To prevent infections on
nearby trees, destroy any wood that appears to have pycnidia.
Sherman V. Thomsonl Extension Plant Pathologist
Scott C. Ockey/Plant Disease Diagnostician
(_isting of commerGal products implies no endorsement by the authors or the Utah State Cooperative Extension Service. Criticism of products not
listed Is neither implied nor intended. Persons using such products are responsible for their use according to the current label directions of the
manufacturer. PestiGde labels are legal documents, and It Is a violation of federal and state laws to use a pesticide inconsistent with its labeling. The
pesticide applicator Is legally responsible for its proper use. Always read and follow the label.
http://www.extension.usu.edu/ipm/disfact/upd 15.htm 8/8/2003
Jul 24 03 01:37p
V11e~Crest LandscapeMain 4072914966
Vall
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Services
24 JuN. 2(103
Mr. l~hael Hinges
City o Winter Springs
12E: 1 Tree Consultation Issues
Dear
u for the opportunity to work with you regarding a case~volving some stressed trees in the Tuscawilla
The folio~ving is general information and observations t we made in several sites in the Tusca~villa n
Winter
We m de several stops in Tuscawilla and noted stress and major 'shack in several Laurel oaks, Cherry laurel and Tu rkey oaks.
The 1 lions were all residcntiai areas that are fomtally landsca . Tn many cases, but not all, the aB'ected treys w existing
trees m before the neighborhood was built. This could not be etermined for sure with all of the areas we looked In front
on on particular residence, wee note a dead tree that had already een cut down and removed, and another, a Laurel o tree, that
was s ly stressed and nearly dead. We observed some bro sh-colored lesions oa the stems and large ranches weU as
black' coloring. The extent oldie-back was quite severe. I t severe] samples, one of soil, one leaf and small st tissue,
and o of a 1"diameter stem from a live portion of the tree (La el oak, Quercus laurifolia). These samples were t off to the
Unit/ ity of Florida Plant Pathology Department for testing. T test results came back positive for Cytospora, or canker,
whic a fungus disease that eR'ects trees. Included with my anon is the conclusive report from the Universi ~ of Flotida,
and recommendations.
Rc do 'o
Follo g the University of Florida recommendations, the treatm t calls for pruning and removing a tTected tissuesf~n trees.
Adeq to watering and fertilizer is a recommendation. In additi OF recommends treating with a copper fungicide ~or control
of the 'sense.
SumnlarvlConclusio
The a c recrnnmendations made by the OF Plant Pathology t may not be entirely practical. It is difficu 4 to
enco ge residents to adequately water and fertilize for prevertti and if the disease is already in an nose, it is likel to spread.
As f treating with fungicides, that most IdCely wont be practi either since that would require large resources and sate
logist and safety problems for the public. My recom~ndati is that diseased trees be removed, as well as the d brie from
such , and be taken to a land fill lmmedtately, Of homed 1 y l0 destroy the spores from the disease. flat from
di d trees should not be left or mixed-in with other yard and made into compost for mulching or othef ses.
P] let me la-ow' if you have nay further questions regarding ' a matter, ar if I have failed to adequately address ur
con .Billing for my servioes arc to be paid to VaileyCrest T ee Care in the amount of 5390.00
~ ~-
John .White
ISA 'fled arborist
Society of Consulting Arborists
4777 Old WintRx' Gardta Road ~ Orlando,
www.vs
32811 ~ 407.293.0146 ~ fez 407.
p.2
Jul 24 03 01:37p V11eyCrest LandscapeMain 4072914966
07/0 03 11:55 FA3 3SZS9ZS433 P smt Diseabe C1
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Floridlw E #easion Plwat Disrme Ctieiic
BWg 78 wry Road,1'p Hax 1 i 0830
GuiAesvill FL 3261)-Oa3ti
C~oopez~itive Extension ~
mstit~a of Food aoet A~~
~ ~_ ~. Pme~ Pwatolo~ist
t: (352) 392-1795
(352) 392-3438
ii: rjm(~mail.ifas.utl,Gdu
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John P. Wbite
Valley Crest Landscape
4777 Old wintEr 63zden Rd
Orlando >•i, 32811 ~!f
Orange A9MM
Quercus laurifolia, Laurel oak 06/23/2083
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Jolter P. i+fl~i.te
Palley C>:est La~dseapo
t 4777 Old FiintQr GasdeA Rd
Orlando Fl. 32811
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Cytospo sp. -Stem canker
>?rnae a rmw~e affected tissue as feasible. ater and fertilize the tsars
adegttat y. Application aS a copper fungicide may help to zeduce this
disease.
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lil~vays 31ow label t'#tes and xecorca+endatiorts hen using ntsticides. test ~a nar
ptatici s or pesticides ttew to your facility a small scale to check !os pl t
saiQty lore widespread use. 1
PNaw yatr b6f1 Opera ~K 11ite0 a0ove Aor amr q~esdons
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