Smyrna times., 1928-05-30
ORCHARD SPRAY SERVICE TO
FRUIT GROWERS KENT COUNTY
r. E. WILSON, COUNTY AGENT,
MAKES ANNOUNCEMENT
DIR. J. F. Adams, Plant PatholOgist of
University of Delaware, Gives Ad-
vice as to Apples and Peaches

vice as to Apples and Peaches
Fruit growers in Kent county and
the surrounding areas have received
recently from the office of County
Agent Russell E. Wilson the fifth edi-
tion of orchard spray notes, as pre-
pared by DR.. J. F, Adams, Plant Path
ologist Of the University Of Delaware
and the State Board of Agriculture, in
regard to the first summer spray for
apples and the next spray or dust ap-
plication for peaches. This particu-
lar spray for apples is for protection
against such diseases as scab, frog
eye leaf spot. fruit spot and blotch,
and also as a preventive measure
against the codling moth, curculio
and tent caterpillar For this appli-
cation the growers are advised to use
the commercial lime sulphur, (32 de
grees Baume) at the rate of gallons
to 1876 gallons Of water. AS a pro
lection against the above mentioned
insects it is also being advised that s
pounds Of arsenate of lead be added
to each 200 gallons Of spray mixture.
In view Of the fact that arsenical in
jury may occur to the young fruit and
leaves, it is suggested that 12 pounds
of lime be added to each spray tank
as a preventive measure. Where
growers are equipped for dusting,
standard sulphur -arsenate of lead
lime dust should be used at this par
ticular time.
Wheather conditions this month
have been more favorable for orchard
work than at any time during April,
and although apple scab appeared
during the second week in May for the
first time this year, the general in
fection observed at this period is no
greater than was found at this time
last year. The first infection occur
red during the early pink stage, and
favorable weather for scab develop
ment continued following the pink
stage with the result that further in
fection will be evident about the third
week in May on the leaves from the
leaf buds. The small leaves in the
blossom clusters are showing general
infection of the frog-eye leaf spot, but
N4AAS nASCetSC Vii 4AOL DCCOlllC d us
turbing factor if it is confined to these
leaves only. The curling of leaves
and frost cracks, however, as the re-
suit Of low temperature, are very
common in many orchards this spring
Rosy aphis is showing more prevail
ence than last year, and this is es-
pecially true in Kent county, but it
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severe in those orchards where the oil
sprays were used in the delayed dor
mant stage of growth. The attention |
of the fruit growers is also being call !
ed to leaf hoppers which are putting |
in their appearance, as well as the |
curculio on both the apples and peach |
es. Peaches are ready for the next |
spray about three weeks after petal |
fall, or two weeks following the shuck |
stage. This spray is a much needed |
one for protection against the curculio
brown rot and scab, and should con
sist of dry-mix at the rate of SO |
pounds to 200 gallons Of water, to
which should be added pounds Of
arsenate Of lead and 10 pounds Of
lime. In the event dust is to be used, |
the growers are advised to use a 10
1920 combination, or an 80-5-15 for
mula, if frequent applications are be-
ing made. If aphis should be present,
| 1-2 pints of nicotine sulphate BLACK
Leaf 40) should be added to each 200 |
gallons of spray mixture. The effic- |
iency of this mixture will be greatly |
increased BY the addition Of two
quarts Of fish oil soap to this amount |
Of spray Proper spraying often de-
cides whether crop will be a success
or failure, 50 all the growers are be
ing cautioned regarding the import
ance Of a thorough covering on their
trees in order that they may expect
the best results in the control Of the
many insects and diseases that are
troublesome in the orchards during
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