MEDITORD MAIL TRIBUNE, MEDITORD, OftEGON, SUNDAY, MAY 29, 3910.
11
THE PEAR THRIPS
(My Dudley Moiilton of thu nojmrtuiont of AurlcuHuro, oiwnuod In
DouIiIiiuiih Fruit lnnuct Iiivoiitlcntlonii,)
(Conlliuioil from Friday.
Thrlpn huvo dliiplayoil vory doclil
ud prufuruncoii (or curti.lit flower
jmidi. It Imn lioon tnontlonud Hint tliuy
cIiooho tlio Innor nldo of tlio almond
calyx ouji. In jiriimm thoy nro partial
to thu tiny liloHBum ntoniti and to tlio
tlpii of putalu nm!t whoa blomioinit lmvo
opened, to tlio Htliiina and ntylo, Thin
liiMt Injury Ih onpoolally notlconnlo on
rlmrrloii .wliuro tlio wrltor hr-i many
linen found tlio Htli;mau and ntyloH
lilackoncd mi a roiiult of tlio foudlni; of
tlitlpti, wlillu tlio rent of tlio liloHiioinii
worn untoucliod.
"injury on loaf lititlu ntid on tondor
fnlliiKO In almoit h marked nH wlion
liloHiioinii alono are attacked, altlioiiRli
tlioro ran bo no cloHoly drawn lino
of dlatlnctlon, liocauHo of tlio clono
Interrelation of loaf and lilo'uom liudit.
Treon that havo licon nivnRod for
three or four tlnyn cannot attain put
forth now leaf IiiuIh and noctiinn a nat
ural Krowth for several monthn, and
then they appear nlckly for tho ontlro
year. Often they cannot nUirt nnow
until tho thrlpn havo actually loft tho
troen, an tho Innoctn continue to hin
der each now effort which tho treon
may malco.
The penr thrlpn In known to feed on
the following plautn, and It Ib proba
liln that till- Hut, oxtonnlvo an It Ik,
1m not cemplete: Almond, npplo. apri
cot (Kovoral vnrletleii) , cherry, flK.
;rape, peach (Mulr and Nlcol'n clIngM
proferred), pear (enpeclally Doynno
du Cornice nnd Hartlott), plum, prune,
wnlnut (Iilnisllnh).
The In fleet nhowa a drclded pref
erence for certain vnrltlou of pruneii,
pnum and peachen, but of the other
frultM all varlellen hcomcI to bo at
tacked alike. The pear thrlpH have
been collect') from tho following ln
dlKeuoiiH plantm blOBKomn from the
Madrona (Arbiitun menxlonll) and
wild California lilac (CeanoiluiH thyr
HlfloniH),and foliage of poIhou oalc
(Khun dlvernlloba), All theno plantn
hovever, woro near thrlpn lufcHtod
orclmrdn, and, moreover, only a few
ludlvldualn wero taken from each of
the plantn.
IVedlnK Habit of the I.ni-vno
Thrlpn larvae feed a I moot entlroly
cm ynuiiK, tender follatfo and on tho
Hiirfnco of f j iiltu. Thoy conceal thom
nelven In tho terminal buds and ofton,
an on tho cl.erry, they a'taclc tho un
der nldo of tho lenvoH, unaally near
tho protnfiiont volim. Thoy riuwo tho
leaven to become much contorted,
rniiKod, and full of bolen. Tho In
iwjcts Hcom at tlmon to tako advan
ttiKO of cortaln tondoncleH In tho
Krowth of plantn on "which thoy hap
pen to feed. Kor oxamplo, nowly
oponltiK penr or npplo loavoii nhow a
teadency to roll from tho nldon In
ward and tl rlp find thin Innor pro
tected nurfneo a mont donliablo food
ItiK place. In nuch a cano tho uppor,
Inner ntlrfaco In dontroyod, and tho
loaf, Inntond of opening oui, bocomon
rolled up tls't and eventually dlon.
Tho Innect tliua nocureii tho tondor
eit of leilf tlKnuo for Hh food, nnd nlno
protection In tho foldod leaf. Thrlpn
ofton cauno a doadonlnR of tho loaf
nmi'Kln. and In nuch canes tho leaf Ih
foced Into an abnormal, often cup
nhnpod (trowth. This b. a vory char
actorlutlo Injury on pear treon. Tho
fruiting Inju-y of thrlpn larvao on
frultn, enpoclally prunen, la In n way
uuporflclal, b t It norlounly lmpalni
the appoaranco of tho ripened frultn
and jjroatly lenccnH tho valuo of tho
flnlnhod product. Tho pruno Krown to
be larger than a Kraln of wl-eat bo
foio tho dead calyx In nloiiKlied off.
larvae feed under tho protection of
thin dead calyx, nnd t.r a renult an
nbraBfon of tho nkln, tho feeding In
Jury,lH4iotlceable, ovon on veiy nmnll
frultn. The wcund appearn flrnt bh a
nmnll brown npot which onlarKcn and
producen a ncab an tho fruit maturcn.
Tho HorloimnoHH of what might flrnt
Mbum a Hinall Hiirfnco marking In rtoro
readily appreciated whoa ono recnlls
that when prunen nro bolng cured
the tough scabby npot doen not nhrl
Ml up during tho procer.u of drying nn
iloos tho flesh of tho prune, nor doen
It nKBiime a darker color an doen tho
pruno.
Thrlpn larvae nio ofton can led by
varloiiH meiinn from tho o Iglnnl food
plant to other ".oatn, bolng blown, for
example, from a trco to grans or
weed bonoath. Thoy liivo no wlngn
nnd cannot fly back to tho tico. A
fow crawl up again, but most larvao
adapt themaelvcH to tho now plant
until fully i'nwn, whn Hoy, too, go
Into tho jjro tnd. Many of tho com
mon weeds wo thus boon found sup
porting lnrvio, although no full grown
ItbrlpH havo ever boon scon feeding or
depositing egs on such plantn. Tho
Innect hnR prov d ltnolf to bo a otrlctly
fruit trco peal, and It In carried to
weedn and 1 1 vet on them or on other
plautn only by accident,
lill'K, HIBTOHV AND 1IAIUTH
'J'be ICgg, Tho Ovlponllor itml
OvImhIHoii.
Tho trlpn egg In bean nhaped, light
colored, almoit traunpnropt, and in
vory largo In proportion to tho nlzo of
tho abdomen when neon within tho
body of adult fomalo. It In about ,022
him, long by actual moannrornont.
Tho ovlponllor In mndo of four iIIh
tluct platen. Knch plate In polntod,
linn a nerrnto outer edgo, nnd In oper
ated by powor'ul muiiclcn nnd plnton
within tho abdomen. Tho palm on
each nldo fit logothor nlons tho inner
edges with u tonguo-nnd-groovo-llko
ntructuro, which In action rondem
ponnlblo a nllni'.ing hack and forth, or
Hawing motion. Tho oviponltor is
protected within n nhenth in tho voa
tral tip of tho nbdomou when not
tiMod, but boforo and during ovIpoBlt
Ing It In loworod until almost at right
angles to tho body.
OvIpoHltlou accompanies fcodllng.
It Kcotiis necoBnary, Indeed, that be
fore tho oviponltor can bo inserted
through tho plant opldorruls tho thrlps
iiiunt flrnt weakon or break r.n opon
Ing through tho tlnnuo with tho mouth
parts. Tho biiccohbIvo oporatlonn of
lacerating tho plant tlnuo, lowering
the oviponltor, placing nn egg, nnd
withdrawing tho oviponltor roqulro
from four to ten mlnutcn, nnd mny bo
briefly described an follews: after
making an IiicIhIoii with tho mouth
pnrta the liiKoct moven forward, dropH
and limortH tho oviponltor, and by op
erating tiny nnvs nho maken a deep
ovipositor otaoln shrdul cmfvyp eta
Incision In tho plant tinauo Whllo
tho ovipositor !:, ntlll dcopl-' sot In
tho plant, an egg in conducted
though tho cavity between the platen
and deposited underneath tho cpldo.
mls. Tho oviponltor is withdrawn
and tho egg In thus left dcoply em
bedded within tho plant. Doling tho
ovlposltlon porlod ono ofton find a
branch or n trco, or ovu i."...ny trees,
on which nlmont nil thrlps aro ovi
positing nt tho Bamo time.
(To bo continued.)
MK.MOUIAL DAY I'KICES ON CUT
FLOWKUS.
Carnations 7Gc por dozon
Formosa Llllloa )2.u0 por dozon
Calla Lllllcs 2.00 por dozoa
8tncks ExtrA Select. .$1. GO por dozon
Sweet Peas 25c por bunch
Solf-watorlnc coment boxes; water
once In 10 dcya,
MEDKOUD GREENHOUSE.
Phono 3741. 923 East Main. 50
Haukins for Doalth.
BMRTI
DRIVERS that know the country
RIGS that cover the ccurliy
QUICKLY AND WITH COMFIW TO YOU AJIK ALWAYS TO Y.
FOUND A'l TUB
FAItLOW & DOW INO, FOFRn5TOIt8.
WEST SIDE STABLES
I'HOKH 2481 S. GItAPE 8TREKT
PLUMBING
STEAM AND HOT WATER HEATING J
All Work Guaranteed Prices Beasonablo
COFFEEJN & PRICE
i
11 North D St.. Medford, Ore.
Phone 303
Roanoke
Roanoke
One of the Most Beauti
ful Resident Sections
of Medford
Roanoke Addition is just far enough out to elim
inate all noise and bustle of the business section and
yet it is just right for the man who is in business.
Only ten minutes' walk from the railroad. This is
becoming one of the most finished residence districts
of Medford. The lots all face on Main street and
Rose avenue. Cement sidewalk all in. Sewer and
water mains laid The lots are high and sightly,
which gives them a great advantage. Building re
strictions $2000. There are already several fine new
cottages on the property. These lots are quite large,
being 50x137, which gives plenty of room for garden
and. garage and other necessary buildings.
Come and make your selections early. Prices $735
to $750 for east and west front lots.
J. W. DRESSLER AGENCY
Selling Agents
WA NTED
Timber and Coal Lands
Engineering and Surveying Contracts
Taken and Estimates Furnished
B. H. HARRIS & CO.
Medford, Oregon
Office in JacKion County BnK, Upstair
Medford Iron Works
E. E. TROWBRIDGE, Proprietor.
FOUNDRY AND MACHINIST
All kinds of Engines, Spraying Outfits, Pumps,
Boilers and Machinery. Agents in Southern Ore
gon for FAIRBANKS, MORSE & CO.
Roanoke
Roanoke
Geo. W. Priddy O. D. Nagle Geo. T. O'Brien
Medford Brick Company
Contractors and Manufacturers of Brick. Dealers in
Pressed Brick and Lime.
OFFICE IN POSTOFFICE BLOCK, ROOM NO. 5
Phone No. 3181.
Medford Is Certainly Entitled to Be Named
The Pasadena of Oregon
Every
advantage
connected
with living in
a city may
be had with
an Eden
Valley Tract
The Best Class of People Are Attracted Here
v People of refinement; people with means; retired business men; professional men; college and university grad
uates, are coining to the Rogue River Valley by the score. Within tho past two years almost a hundred Chicago
and Evanston, HI., people have purchased homes near Medford, and nearly every one of them has a friend or two
whom thoy hope to induce to come and locate in the valloy. New York, Philadelphia, Boston and many other
eastern cities are almost if not quite as well represented, while St. Paul and Minneapolis have more representa
tives here than any other several cities combined. Think these statements over and get your thinker going. Write
to the undersigned or the Medford Commercial Club for detailed information about tho country, and you will
nover have causo to regret it.
The Most Fascinating Investments Are In
Bearing Orchards Near Medford
Most of tho producing orchards havo been held in large holdings until recently. A few weeks ago the Eden Val
loy Orchard, containing 005 acres, was placed on tho market in any desired acreage. We have been authorized to
offer the bearing apples and pears for sale, and if you know anything about this country and want a 'desirable
block of bearing trees, write or come soon. During tho past week over $150,000 worth of the property has been
disposed of. Ik is located within two miles of Medford at an elevation of about 100 feet above the city and is one
of tho best kept orchards in tho world. Parts of tho orchard- offered for sale have paid tho owner over $600 per
aero per year for four straight years. Do not come unless you are prepared to stay, for just so sure as you do come
tho combination of fat soil, grandeur of sconic beauty and Italian climate will steal you, body and soul. After ono
visit hero you will bo misorablo any other place on earth.
. An Eden
Valley
Orchard
will pay an
income the
very first
year
Buy now
JOHN D. OLWELL
EXHIBIT BUILDING
MEDFORD, OREGON
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