The Belding banner-news. (Belding, Mich.) 1918-1973, 1919-04-30

| l.. r. Taft Of M. A. q. at Lansing Will
be Of real interest to apple growers
| in this vicinity:
Mr.. Brinton +. Hall, Belding, Mich.
Dear Mr.. Hall; To secure the
best results in controlling apple
aphids the spray should be applied
within IL to Ia days from the time
the first aphids hatch. If you have
| fixed the date accurately, you should
plan to begin the spraying so that it
may certainly be completed within Ia
days.
One week ago was in Benton Har-
Dor and they were just beginning to
apply the spray fer aphids. as the
first had Matched on March 20. They
Matched here about week ago and /
think it would be advisable for you to
plan to finish your spraying for the
aphids before the close of the follow
ing week.
For 100 gallons CT spray, use lbs.
of dry lime-sulphur and Sd pint of
"Black Leaf 40'.
have carefully noted your spray
program and think it excellent for the
most part. In fact, without knowing
more of your conditions / would not
suggest any positive changes.
think it is very important that pre-
pink spray be applied. This means
that the trees should be sprayed as
soon as the fruit bud can be seen in
the clusters; or, at least very soon
after they begin to separate. This
would be before any color appears at
the tip of the buds. While it will be
little early to exactly satisfy these
conditions. the spray which / have
suggested for the aphids would an
swer as pre-pink spray.
The second spray should be about
as late as possible before the petals
open. Ordinarily would prefer to
use about A 1-2 lbs. of the dry lime
sulphur to so gallons, but having made
the aphid spray, 3 1-2 pounds should
answer. While some rely upon one
gallon of 1ime-sulphur solution to so
gallons, prefer to apply one gallon
to 40 gallons of water. This would
require about 3 "a lbs. of the dry
lime-sulphur to 40 gallons in order to
have the same amount of sulphur in
solution. and would be equivalent to
practically 1-2 lbs. in so gallons.
As stated above, | would not make
any change in your formula for the
| first spray so far as the amount of
lime-sulphur is concerned. If you
have been troubled with leaf-rollers.
curculic. tent-caterpillars or canker
worms. would add 1-2 lbs. of pow
dered arsenate of lead to so gallons.
Provided you have four weeks be-
tween the time you make the aphid
spray, ! would follow it up with the
schedule you have arranged, putting
on our No. spray ten days to two
weeks after the aphid spray and then
using our dust spray ten days to
two weeks later, just before the blos-.
SONS open.
! While / have considerable faith in
the use of dust for the fourth and
| fifth sprays. In a season when the
weather is fairly normal, if you have
cool weather with frequent rains,
would rather work in one more liquid
spray two weeks after your third
spray; or ten days later if rains
threaten.
We will have better success with
spraying operations If we are able to
make ell applications just previous
to the rains After q rain, provided
we have sprayed Immediately before
the rain, there is no great need Of an
other application for about ten days.
4 But, If rain is coming, we should
make every effort to spray before the
rain comes. OF course, you know that
! the spores only develop in the pres
ence of moisture and cannot develop
where the spray has been applied
Hence the reason for spraying just
before a rain. There are really two
reasons for repeating the spray ten
days after rain. One is, that the
effect of the spray will be largely
gone by that time and that we should
also prepare to spray in order to COW
err the new growth which has come
out. The other reason is, that if
the previous spray was not perfect
enough to prevent all of the spores
from terminating those which were
able to develop will form new spores
in about II days; and we should get
on another application before these
spores have scattered.
! am getting many reports of there
being a great number of aphids
Matching. Of course. those which
hatch first are grain aphids and these
do net do very much harm; but condi-
tions which would favor their devel-
opment would also be favorable for
green apple aphids, and for the rosy
aphids, which are the ones that do
most harm. The reason why it is
desirable to wait about IL days afte-
the first aphids hatch is that the
green apple and rosy aphids do not
hatch until about 10 days after the
grain aphids; and. if we wait abou.
IL days we will then be just in time
to get the green and rosy aphids, and
will have also caught the grain aph-
ids.
1t is especially DESTROYS to make
the aphid application in the early
cluster bud stage, as if we wait until
the bud clusters open and the leaves
1cvelcpe il will not be as easy to reach
all of the aphids. You are dodbtles IS
aware that If the weather during
May is cool it will prevent the desei-
opment of the aphid parasites; while
if i comes off warm the parasites
49,. IL a