The Lambertville record. [volume] (Lambertville, N.J.) 1872-1968, 1912-08-09
The Lambertville Record.
FRIDAY, AUGUST 8, 1912
Peach Fellows, Little peach and
Peach Rosette.

mains a mystery However, it ha
been demonstrated that they can b.
controlled provided the nurserymaI
and grower follow the methods IL
which we shall refer.
PEACH YELLOWS.
The best known of these three dis
eases is the peach yellows which was
first noticed about 1871 in the Della
river valley. 1t is now widely distri.
buted throughout a considerable part Of
the United States and at times has
caused practically complete destruct-
ion of commercial peach growing in
many places The rise of this pest and
the possibilities Of it being controlled
are demonstrated by the following
figures. In one county in Michigan
the number of peach trees in 1874 was
estimated at 654ooo. The ravages OF
yelows reduced this number to 42,863
in 1900. Yhe control OF this disease
led to revival OF the peach industry
and in 1000 there was 923,288 trees
The disease is not always easy to
detect in its early stages and in young
trees. In bearing trees the symptoms
are (a) premature ripening OF the fruit,
(b) willowy growth of new shoots
upon the trunk or main branches, and
(c) discoloratlon Of the foliage. The
premature ripening may occur before
either of the other symptoms, and such
fruit usually shows red spottlng or
blotching over the surface or through
the flesh. 1t is usually watery and IN
sipid and sometimes quite bitter. Pre-
maturing may also be due to glrdling
by borers and other causes which can
ALWAYS be determined by careful exami-
nation The so-called wlllowing is
very easily recognized and is familiar to
most peach growers. 1t occurs as
slender, sometimes clustered yellowlsh
green shoots out OF the trunk and low.
er branches The leaves on these
shoots are small narrow and also
greenish-yeIlow. The foliage OF the
trees is frequently of yellowlsh-green
color, but if supplied with an abnn-
dance OF nitrogenous fertilizer may not
be very CONSPICUOUS. The disease may
be noticeable in part of the tree only,
while the other parts may appear per
feclly healthy, However, the APP,
parently healthy part is not healthy and
I'm due time will show the true charaet-
er oil the disease
Although the cause OF peach yell
lows has not been determined 1t is well
known that the disease can be trans
mittea from tree to tree by budding
and otherwise. The fact that the dis
ease can be transmitted in this man
ner makes nursery stock dangerous
scource oil distribution unless the great
est care is used in the selection OF bud
wood. There is considerable evidence
TO indicate that the disease has been
frequently distributed on nursery stock.
The appearance of the disease during
the FIRST second or third summer on
trees from certain nurseries while trees
OF the same variety from other nnrser-
les were perfectly healthy indicates
that the trees must have been diseased
before they left the nursery. Prot. Nj.
A, Blake of our New Jersey Agricultral
Station describes the disease on young
trees as follows; I'll the leaves Of one
branch of such tree begin TO turn a
yellowish green or have reddish, rusty
green appearance and roll from the
edges, il indicates a checking of the
growth of the branch Ii no insect or
mechanical injury has occurred to the
branch II strongly indicates yellows.
The leaves upon such branch ripen
early and fall while the remainder OF
the tree retains most OF its foliage
The fruit buds will be larger and fur
thur advanced upon the affected part
and the bark will have a ripper appear
ance with noticeably large lenticles.
This change in the behaviour OF any
part of well cultivated young peach
does not usually occur until August ia
New Jersey aud sometimes not until
September" A young tree may also
FIRST show symptoms OF disease by q
dropping of the foliage toward the
branches and trunk, together with a
change in the color of the foliage from
dark green to light or even yellow
ish green. The affected leaves ar,
also OF decidedly stiff and ripene,
texture as compared to normal leaves
These syptoms are quite characteusti,
and can be quite readily distinguish,
when once known
There is no cure for yellows othe
than the cutting and burning OF tn
diseased trees, The diseased tree
must not touch the healthy trees
New trees can be planted in the sam
place as the old one; the disease doe
not persist in the soil and cannot b
transmitted through it.
LITTLE PEACH.
This disease is of comparatively re