xt7sf7665n3p https://exploreuk.uky.edu/dips/xt7sf7665n3p/data/mets.xml   Kentucky Agricultural Experiment Station.  journals kaes_circulars_004_503 English Lexington : The Service, 1913-1958. Contact the Special Collections Research Center for information regarding rights and use of this collection. Kentucky Agricultural Experiment Station Circular (Kentucky Agricultural Experiment Station) n. 503 text Circular (Kentucky Agricultural Experiment Station) n. 503  2014 true xt7sf7665n3p section xt7sf7665n3p I    i
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JUL2 7l953 l  
By J. G. Rodriguez J l
IXPIRIMENT STATivl* l
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Circular 503    
 
Cooperative Extension Work in Agriculture and Home Economics A J
College of Agriculture and Home Economics, University of Kentucky
.4.53 and the U. S. Department of Agriculture, cooperating »
FRANK J. WELCH, Director
Issued in furtherance of the Acts of May 8 and June 30, l9l4.  

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elow—bttt some-  
titties just above——the soil line of tlte trunk.  
Nature of Injury  
Killing of trees can actually resttlt from borer llljllfy. yolllig ~ l
plantings being particttlarly sttsceptible. Tlte catnbitttn or inner y
layer of bark is attacked. Tlte lesser peaclt tree borer usually  
gains elll1‘;1Ilt`€ tltrottglt an injured area in tlte bark. Tlte first i
SWT of borers is a jelly-like gttttt mixed witlt |`rztss exuding frottt
 
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` Fig. `l.-— Mule und female moths of the peuch tree borer. 3 mu
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the burrow where the borer is feeding. Inspection of trees for l pw
borer injury is easier in the spring because the larvae become more MH
active at this time and the exudation of gum from the burrows is ml
A quite conspicuous.
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Lnfe Hnstory VCI
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Both species of borers develop from the egg to the larvae 0i ply
borer, to the pupa, and to the moth or adult stages. The seasonal ml
histor of the two s ecies is somewhat similar, et different enough ·
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_ to influence control practices. .
The eggs of both species are similar, usually a rich chestnut
s brown, although they may be lighter when freshly laid. Thr
each tree borer female la s eggs an average of over 500 in her
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° lifetime) not only on tree trunks, but also on vegetation near tlit *01]
T trunk. The lesser peach tree borer, on the other hand, lays egg um
carefully on the cracks or about the wounds of the tree. The egg [Ile
of both species hatch in 0 to I3 days and the small larvae Illt>\'l‘ °l‘
rapidly toward their respective areas of attack on the tree. lmf
Both species of borers hibernate as partly grown larvae and M ll
l feeding is resumed in the spring. In the case of the lesser peutll ll)
tree borer, there are two broods annually; the spring-brood motln mf
emerge in late April or early May, and the second brood adulil (IU
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have been observed laying eggs as late as October $0 in soutlr if
western Kentucky. The peach tree borer begins emerging quilt ‘ fl
· generally by early  uly. » eeee
lt is evident, therefore, that lesser peach tree borer €l1l€l`g€llli°i xpm
4

 F continues for about six months, and considerably more protection 1  
is required against this species than against the peach [TCC borer. it
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  Summer Treatment Control Measures   ‘
A Experimental work has shown that parathion and DDT are  
- the best materials available for control of these borers} Parathion  
, will control both species, but DDT is effective only on the peach Ml
‘l
t tree borer.  
A Be in summer treatment for control of both s ecies of borers l .
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, about une 10, usin · 3 ounds of 15 ercent arathion er 100 »
at , 8 P P P P i
" gallons of water, and makin ‘ at least four a lications at 3-week l
an 3 PP , V
intervals durin the season. The second, third, and fourth a li-   l
_ S PP , ,
i cations in this plan are dual—control sprays and will control the j ‘
{Ol l each tree borer o ulation as well as the lesser each tree borer. l
P P P P Q
OW   Make thorough coverage of the scaffold branches, and drench the { I
$15 t trunk, allowing run—oif to wet the soil at the base of the tree. fl i
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lf only the peach tree borer is present, and particularly if it i l
A is not a serious infestation, DDT used at 6 pounds of 50 percent ,
» wettable material per 100 gallons will give effective control. Ap- y l
*01 ply july 1, August l, and September 1. Take care to cover the t
ml trunks, thoroughly, and to remove trash, weeds, and other vegeta— t
Ugh y tion from around tree trunks. 1
t 1 °
Sl Fall Treatment {
it
.. A fall treatment of aradichlorobenzene (PDB a lied at
hu I P . PP
tl1t· soil level is effective only on the peach tree borer. Make applica- y I
Egg, tion about October 1, when the soil is dry. Remove trash from l l
0.,, the base of the tree trunk, remove gum if resent, and lace a band
Chbh _ D P P 4
wu. <>l Crystals around the trunk, taking care to allow at least 2 inches ,
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between the band and the trunk Fig. 2 . ()ne ounce of PDB 1
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um] ls H€lV1S€d for treating trees 6 years of age and older, and from lé i
Sul.], 10 M Ounce on trees from 3 to 5 years old, depending upon the
H size of the tree. Do not use more than 11. ounces on anv tree.
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U Cover the cr stals with about 3 inches of fine soil, ilin ` it toward T
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Mh. UW trunk, then compact the mound with the back of a shovel.
·I,. AlK€l` 4 weeks, remove the soil from around trees less than 4 €2ll`S -
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_, l· C. Rodriguez and W. D. Armstrong, 1951. Peach tree borer control with
Puff SPWYS- Kentucky Fruit Notes 4(5):4-6.
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Fig. 2.-PDB Treatment for Peuch Tree Borer
A Ground leveled and PDB cr stals laced around trunk. (B) Soil placed
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over PDB and packed with back of spade.
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1 of age; on older trees, the mounds may be removed in the spring. bm
For lesser peach tree borer control, paint the wounds with il °
l mixture ol` PDB dissolved in crude cottonseed or miscible oil. PY"
. . . . . . . . 111 1
. \Varm 2 quarts ol oil, dissolve pound ol PDB crystals (it miscnhlc J
oil is used, add water to this mixture to make up to l gallon) and y
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apply \Vl[ll a paint brush. Apply this treatment during the lair lj?
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° lull 0i` 011 WZIYIII W111[€i` (lays, pilllltlllg only Il1€ glllllllly 2l1`€2l. llll‘  
0`lllll Sll()lll(l not he removed. ;
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SLII11I‘h¤I'y of CI1¤f¤C'I'€I’IS{`ICS `1l l
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Lesser peach tree borer Peach tree borer   l
Smaller than peach tree borer l  
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.»\chtlt male and leinale almost .—\dult lentale larger than male: has  
identical vivid orange band on abdomen *l
.»\dttlt male difficult to distinguish ;l i
1 from male or female lesser peach t
“( tree borer 1  
l  
Larvae usually lound high on trunk, Larvae usually found below ground 1 l
in crotches or on lower branches, line, but occasionally just above.   l
U. y but sometimes at ground line. A l
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il liorer gains entrance through llorer attacks sound bark.
l injured area in bark.
1 e
tcl 1 _
lu, * 1%%%* liglll lo rich chestnut brown; liggs light to rich chestnut brown; I
y hatch in ll to 13 clays. hatch in 9 to 13 clays,  
he 1 1
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1 Mttlh lays eggs on cracks or about Moth lays eggs on tree lI`lllll§S 2llI