The Waxahachie daily light. [volume] (Waxahachie, Tex.) 1894-current, 1917-03-12

WASHINGTON, b. q, March 4
:lhe resa gsriner shonld under
n and That roses are subject "a 4
number vi fnnens erowths causing
fous diseases md That he must
vsrd these VII carcfaally Il he would
Keep Ais plants Ii the beautiful con-
iltlcn necessary for satisfactory
gfowth ana tae production of bios
solas. These fungus parasites
rsrely Kin the plant outright, say
specialists III the II. s. department
iii agriculture, but BY their presence
tna rigDr of plants Is greatly e
dncea. the foliage may he rendered
uaslgtfiy, branches more or less
distorted iii disfignresl, and the
Quality of the blossoms lowered.
/ iii considering the fungus diseases
.pf these plants the fact mrst be
recognized that in common with
similar diseases of other plants
Treatments are preventive rather
than curative. While thorough and
repeated sprayingS With suitable
Inngicide will In most cases SO
0Eeck the development Of the para
site that the disease FOR the grow
ing season Will be IN q great mea-
SIRE controlled. the full benefit of
fEngicfdal applications can only be
secured BY their early use in the
spring, guarding Iii this way against
tile recurrence OF disease of the
previous season
Fungicides to be recommended
f0r rose diseases are bordeaux mix
tnre, Hme-suiphur. potassium sui
phfde. and ammonicai solution Of
copper carbonate. The lime-sul-
phnr has proved very valuable. es
pecsaliy in controlling mildew, as
1t does not injure the foliage OF
even delicate tea roses.
Powdery Mildew Powdery mil
dew Is extremely common, few
s.ardens being entirely free from
ills most destructive Of all rose dis
esses. Wild as well as cultivated
roses suffer from il. crimson ram
Dlers being especially susceptible.
The fungus frequently appears
very early III the season on young
hs as, leaves, and young shoots caus-
irg the appearance Of a delica Q
white mildew that becomes mealy
after the development OF the sum
mer spores II the attack is severe,
TIE normal development oil the suc-
cnient young Shoots Is arrested.
the leaves become curied and de-
termed, falling premafnrely, and
completely defoliation sometimes re-
suits. Later In the season the
winter spores develop. These
spores are capable Of persisfing
through the winter and setting up
new infection in the spring.
Rose Rusts- Rose rust appears
az conspicuous. orange-coiored swell
sings on the green parts OF rose
bushes in the spring or early SUM
nser. Later these take deeper
slsade and become powdery- small.
circular spots may occur on the
leaves.
Anffracnose Antnracn0se at
taess principally the leaves. but also,
to some extent the branches. caus-
Ing the appearance OF biotches.
which later discharge pinkish mass
OF spores, The affected leaves are
dsFarfei and fall
Laaf-spot There are several leaf
spot diseases OF roses In most cases
the spos lave a mere or les brown-
leh cnhses with mnrylish border
Leaf-biotch -Leaf-blotch. which is
also knowa as black spot ranks next
TO powderg miidew in frequency Of
occurrence. Bush roses are more sus-
ceptibla to this trouble than climb
ilig roses and the attacks are most
severe in wet seasons. The first
sym ptomS OF the presence Of the par
asite are lrregllaTly shaped, black
ish spots without definite borders on
the upper surface OF mature or near
~ full grown leaves. These spots
may grow together so as TO cover
almost the entire leaf.