Daily Kennebec journal. [microfilm reel] (Augusta, Me.) 1870-1975, 1890-05-15
Spraying for the Apple scab,


As orchardists are fully aware great
damage 10 being done to apples in this State
and throughout the northern portions Of the
country by the apple scab, otherwise known
a. the blight" and "mildew,' which at
taches Itself to the face Of the apple, in
dark coiored spots which greatly injuries
them for commercial purposes and general
use This scsb is minute parasitic fun
gus, microscopic plant, whose spores or
seed sre produced abundantly throughout
the growing season, beginning early in
spring from those which lived over winter
and in turn give rise to successive crops
until frost comes.
Many experiments have been tried with
fungicides Of different kinds to prevent the
development Of the scab, and to discover
whether or not these preparations could be
safely and probably used. 1t has been de-
cided by expert vegetable mycologists that
treatment for the scab must for the most
part be preventive. In other words the en-
deavor must be by the application Of GER
tain substances to protect the leaves and
fruit from the spores of the disease, and il
this is accomplished it follows that we can
have no scsb.
,aao
turing '"e season Oh 1858 experiments In
spraying trees for the prove 1tion of the ap
pie scab were made with great care by Mr.
L.R Taft of the Michigan Exnerims,,
c.; .I,.e.., -
'Ae "'e"' just pa'h'neu
IN ouiiein OF thaI station, are OF great
value 10 apple orchardists every where. The
experiment. were made IN trea. of tho
:,
.p' oA "1''a"' VI "' IN"
oiiity to injury from the scab. The first
ap plicstion Of the fungicides was made May
2a,b whom the .nnls, we,s shou, tho .;xo
VI 'A'se peas anu 'e'o'e any Signs "i scao
was aPpa'en'' |a'e was 'akeu I'd cover
each leaf and fruit, and 1t required about
three gallons Tor each tree which was ap-
piied atacost OF from ~ to 90 cents per
tree Tor the hve applications Inc appica-
tons were made on May ~; June d; June
49, """N ~ ""'' ~ ""'S - "- tANs~Ss
l. The following were the solutions en-
ployed;
No. |. Potassium .ulphide dissolved in
water At the rate of FIVE ounces to ten Ral
Ions of water.
No Stadium hyposulpbite dissolved in
ater a, the rate of one mound To ten gal
lon, NJ water
M 4 Sulphur solution from A. Bean.
Jach.onville. Fla used at the rate of one
pound to ten gallons of water.
Ma Conner carbonate and ammonia.
p,epared nv mixing three ounces of con-
mar r.rhonate with one quart of Ammonia.
and a. sooo AZ all action had ceased. dilut.
inc 20 % gallons.
M K Modified can cele.te. Dissolve two
,cnnds of conner sulpba,e in hot water and
in another vessel dissolve "a pounds of
c,,aonate of .ods. Mix and before using
ada IA mini. of ammo in. then dilute TO 22
vallons
rr.;,,,. 80 tho .ova,., .,r,;c.
luz P"'" '"'
tons OF these fungicides anu their suns
are of great interest; but we have room
t, g., IN, summary ~ ysner.l result.
'".' ~ -.
an" CONCLUSIONS W i'''
give in his own words
~. The sulphur solution did not have q
.uti.,ieully marked ef ct to make its ap-
riea,iou profitable.
2. Sodium hyposulphte. II this is used
at the rate of one pound 10 twelve or fif-
teen gallons of water it does not injure the TO
lisge and as its cost is slight its benefit you'd
be sufficient TO more than repay the cost. 1t
/. e..ilv washed off. however, and the cop
per mixtures would be feuud more effec-
live And cheaper in the ED
8. Potassium .ulphide. This gave
| slyhtIy better results than the hyposulphite,
NM i, il more expensive and should be
passed over for the same reasons
l. Conner carbonate and ammonia.
| This ia one of the easiest of all the mix
lures 10 prepare aud its effects are COM
n.rs,iveIy lasting. Ii is lightly cheaper
tb.n the next but it seems to have rather
les, effect, II showed itself. however. .
valuable remedy. but on account of its
slightly injurious effect on the fruit she
formula will be improved by substituting
twenty. eight gallons of water for twenty
t~o.
Modified eau celeste. The best re-
anita we're obtained with this mixture and,
with varieties likely to scsb, 1t will prove
,,o,s investment. Thirty or thirty-two gal
lon. Of water should be used when the for
mia calls for twenty-five. By its use =
a;ga,srcs in the amount of scabby fruit
nf f,om 30 to rs per cent can be produced
and with such w va.l ;,, otts, make ali the
No,'ne.n I 49,, .mccs.. And failure.
The injury to the skin of the apple
,kay a rnIDr gtfP3k9,