El Paso herald. (El Paso, Tex.) 1901-1931, 1915-04-08
SCHEDULE FOR
SPRAYING GIVEN
Experiment at State College
Shows the Importance Of
Thorough Spraying.

state COLLEGE. y. n. April S-The
near apple and ounce belong TO the
pome fruits. These fruits are subject TO
the attacks Of the cooling moth. SAYS
Prof. Fabian Garcia in a bulletin. The
late ripeniuE varieties OF these differ
ent fruits as a rule. suffer more from
the cooling moth than the early ripen-
ing kinds because the later broods Of
the cooling moth are cOnsldcra bly,
larger than the early broOds In the
sprayed orchards are liable 10 have
more wormy fruit than the orchards Of
the same varieties in the cooler and
higher attitudes In the higher alti-
tudes there are not as many brOOds Of
the cooling moth nor as many worms OF
the different brOods. consequently il is
necessary to give more careful atteu-
tion 10 the subject Of spraying the
pOme fruits. in the lower and warmer
valleys than it might be in the higher
districts.
Spraying Schedule Worked Out.
In order that there might be a more
or less definite period at which orchard
lists may apply the spray. a spraying
schedule has been worked out at the
experiment station.
The first spraying is given when
about 90 to 100 percent of the blossoms
are off the trees This is a calyx spray.
and should be applied with considerable
force nd be somewhat coarse The
second spray is given about 20 or 25
days after the first one. The subse-
Quent sprayings are given every 25 days
after the second one.
If this schedule is followed the
orchardist is more likely to get the
spray on all Of the fruit just before
The, maximum number Of larvae Of each
brood is ready 10 enter the fruit. and
also have the poison on the fruit for
the larvae which emerge between the
maximum periods The number Of
sprayings necessary for the best re-
whether the fruit is early OF late ripen-
ing Under valley conditions at the sta
ton IL has been found that il pays TO
spray the late ripe1inE varieties from
tude this number Of sprayings may be
reduced TO three or four. For the early
ripeuinE varieties two or three spray
ings give excellent results
Spraying Results Encouraging.
last years spraying results for the
Bartlett pear were very encouraging
The Bartlett was in fun bloom on April
10 The maximum number of moths OF
the wintered over larvae emerged dur
ing the first 10 days in April The lar
vac from the maximum number OF the
Wintered over moths were ready TO en-
ter the fruit ar approximately April 90
The first or calyx spray given the Bart
lett pear trees was on April p This
spraying was Thoroughly done with a
power sprayer using $50 pounds pres
sure A Bordeaux nozzle giving p coarse
driving spray was used. one and one
half pounds Of the dust form OF arsen-
ate Of lead was used 10 50 gallons OF
water for the first and second spray
ings. The second spray was applied on
May g. The third was applied on June
Is. five DAYS later than the scheduled
time because the orchard had been irri-
gated and was too muddy. The fourth
spraying was given on July 10. Three
pounds Of the paste form Of arsenate
Of lead was used for the third and
fourth sprayings. The last three spray
ings were applied with a Vermorel
nozzle giving a fine. cone shaped spray
which seemed TO coat the pears with
arsenate Of lead very well
Pears 90 Percent sound
On July % $50 pears were gathered
from trees >. 3, 4, respectively On tree
?, Two Wormy pears were found There
We're llfS sound and two wOrmy pears
gathered from the four trees. giving
over 90 percent sound. On August Is
from two unsprayed Bartlett pear trees
486 pears were picked PA being wormy
and "a sound. or 65-26 percent sound.
The figures show that the spraying
saved over 40 percent OF the crop from
being Wormy.
II is likely that three sprayinEs will
be sufficient for the Bartlett pear in
the lower and warmer valleys
II is necessary for the best results
that the spraying be thoroughly done
and that IL be applied at the right
time