34 
LINN COUNTY NURSERY 
for this reason each lot should be tested 
before using. 
To ascertain if sufficient lime has been 
used, take a small quantity of the mix- 
ture and add two or three drops of a 
solution of yellow prussiate of potash. 
If this changes the Bordeaux mixture 
to a reddish brown color, there is not 
enough lime present; add more and test 
again. An excess of lime is desirable. 
The prussiate of potash may be obtained 
at a drug store in crystalized form and 
readily dissolved. 
COMBINATION OF FUNGICIDE 
AND INSECTICIDE 
When spraying for a fungus disease, 
except when plants are in the dormant 
state, an arsenical mixture may be 
added to the Bordeaux to advantage 
and the spraying will be effective against 
the biting insects as well as plant dis- 
eases. To the Bordeaux add the usual 
amount of Paris green or lead of arse- 
nate, letting the Bordeaux answer for 
the specified amount of water, 
Ammoniacal Copper Carbonate. 
Copper carbonate 6 ozs. 
Strong ammonia 3 qts. 
Soap 1 lb. 
Wlater 40 to 50 gals. 
Dilute the ammonia somewhat and use 
enough to dissolve the carbonate, then 
add water to mak e 40 gallons. Dissolve 
the soap in 10 gallons and add it. 
This solution must be kept away from 
the air if not used when made. It is 
useful for spraying full grown or ripen- 
ing fruit for it does not stain the fruit 
like Bordeaux does. 
Lime and Sulphur. 
In many cases a concentrated lime and 
sulphur solution can be used with lead 
arsenate in place of Bordeaux, provid- 
ing it is diluted to contain about 4 lbs. 
of sulphur in 50 gallons. 
FORMALINE (For Potato Scab.) 
Soak tubers for two hours in a solu- 
tion of commercial formaline, I pint (40 
percent solution) in 30 gallons of water. 
GENERAL TREATMENT FOR FRUITS 
Apples — For fungus diseases and eating insects', lead arsenate and Bordeaux, 
or lime and sulphur solution; 1st, just as buds open; 2nd, just before blossoms open; 
3rd, just after petals fall; 4th, ten to twenty days later; 5th, lae July or early Au- 
gust, this is important for the second brood of codling moth. For scales on any kind 
of tre«s, use lime and sulphur wash early in spring before growth, and late in the fall. 
Cherries— For Curculio, fruit rot and leaf diseases, Bordeaux and lead arsenate, 
01 lime and sulphur solution; 1st, 1 efore blossoms open; 2nd, just after petals fall; 
3rd, just after the petals fall; 4th, ten to twenty days later; 5th, late July or early Au- 
Plums— For curculio, fruit rot, etc., arsenate of Jead and Bordeaux (dilute Bor- 
deaux for Japanese varieties); 1st, before blossoms open; 2nd, just after petals fall; 
3rd, ten days later; 4th, ammoniacal copper carbonate for fruit rot, late July. For 
web worms, arsenate of lead whenever necessary. 
Peaches — For leaf curl and fruit rot, lime-sulphur wash before buds open. 
Pears — Same as for apples. For blight, cut off affected branched as soon as 
they appear and burn them. Disinfect the tools each time with kerosene or bichlo- 
ride of mercury. 
Grapes — For mildew and black rot, Bordeaux Mixture. 1st, before new growth 
is eight inches long, (important); 2nd, just before blooming; 3rd, just after fruit 
sets, (important); 4th, 10 to 20 days later; 5th, 10 to 20 days later. 
Currants and Gopseberries — For leaf spot and worms, Bordeaux, or lime and 
sulphur solution, and lead arsenate. 1st, when worms appear; 2nd, when fruit is 
one-half grown; 3rd, Bordeaux after picking; 4th, repeat two weeks later if necessary. 
Strawberries — For leaf roller, lead arsenate, double strength just after moths 
are first noticed; 2nd, repeat one week later. Cut leaves and burn as soon as fruit 
is off. For leaf diseases, Bordeaux when growth begins at intervals of ten days 
if necessary. 
Raspberries — Blackberries — Dewberries — For orange rust, dig and burn at once. 
For anthracnose when serious, cut and burn the affected patch in the fall or spring. 
Potatoes — For beetles, lead arsenate, double strength, when they appear ?.nd 
from eight to ten days afterwards. For blight, Bordeaux 1 1-2 times standard mix- 
ture, with the arsenate. For scab, soak seed potatoes two hours in formaline (40 
percent solution) 1 pint to thirty gallons of water. 
Cucumbers, Melons, etc. — For striped beetles, tobacco dust as soon as through 
the ground; for lice, kerosene emulsion applied to under side of leaves. 
