36 Linn County Nursery, Center Point, Iowa 
Sprayintf Fore 
The stock solution for the entire season 
may be prepared by adding just enough 
water to dissolve the crystals. Only a drop 
or two is required for each test and lo or 
15 cents' worth is ample for the entire 
season . 
COMBINATION OF FUNGICIDE AND 
INSECTICIDE 
When spraying for a fungous 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 diseases. To the 
Bordeaux add the usual amount of Paris 
green, lead arsenite or arsenite of lime, 
letting the Bordeaux answer for the speci- 
fied amount of water. 
AMMONIACAL COPPER CARBONATE 
Copper carbonate 5 ounces 
.Ammonia 3 quarts 
Water (one barrel) . . 40 to 50 gallons 
Dissolve the copper carbonate in the 
ammonia. The ammonia and concen- 
trated solution may be kept in glass or 
stone jars tightly corked. When ready 
for use, dilute with water. This is a clear 
fungicide and is convenient to use when 
Bordeaux Mixture would stain the fruit. 
POTASSIUM SULPHID (Liver of Sulphur) 
Dissolve two ounces in six gallons of 
water and apply at once. This mixture 
lu. continued 
deteriorates tepidly and should not be 
prepared until ready for application. 
This is an effective spray for mildew on 
gooseberries and currants. 
CORROSIVE SUBLIMATE 
For potato scab soak the tubers for one 
and one-half hours in a solution of two 
ounces of corrosive sublimate in 16 gallons 
of water. When dry cut up for planting. 
Corrosive sublimate is a fatal poison 
if taken internally. It also corrodes 
metals. The solution should therefore 
be made in wooden vessels. All treated 
seed should be planted, and any solution 
left over should be poured on the ground. 
FORMALINE (Used also for Potato Scab) 
Soak tubers for two hours in a solution 
of commercial formaline, 8 ounces (40 per 
cent solution) in 15 gallons of water. 
DUST SPRAYS 
Insecticides or fungicides may be used 
in dust form and applied by a dust spray 
machine. They should be applied with 
slaked lime, land plaster or some other 
perfectly dry powder. Use Paris green 
and other arsenites at the rate of one 
pound to ten pounds of the dry powder. 
Bordeaux may be made in the usual way 
and water evaporated and residue pul- 
verized and applied dry. 
Summary of Treatment For Fruits and Vegetables Not 
Included in Spraying Calendar on Following Page 
CABBAGE. The chief enemies of this plant are Caterpillars and Cabbage Aphis. 
Caterpillars are controlled by spraying with a lo per cent solution of kerosene emulsion. 
Use arsenate of lead on the young plants, but not after the heads commence to form. 
Cabbage Aphis may be destroyed by spraying with a 15 per cent solution of kerosene 
emulsion. 
CUCUMBERS. In general, Cucumbers are affected by the same insects as infest 
Melons, treatment for which is recommended below. 
MELONS. Plant Lice may be controlled by spraying the under side of the leaves 
with a 10 per cent solution of kerosene emulsion. Striped and Flea Beetles will disappear 
if fresh powdered tobacco is scattered about the base of the young plants. For Worms, 
spray with arsenate of lead as soon as these are noticed. Cucumber Mildew makes the 
leaves turn yellow or brown in spots. When vines are about half-grown, spray with 
Bordeaux mixture, repeating two or three times at intervals of two or three weeks. 
POTATOES. Potato Beetles appear as soon as the vines are up. Spray with arsen- 
ate of lead. Kill the early broods and the later ones will be much less numerous. For 
Potato Blight, spray with Bordeaux Mixture when vines are half-grown; repeat after 
each rain. If beetles are present, add arsenate of lead. This spraying increases.the yield 
of potatoes very greatly. 
STRAWBERRY. The main enemies of the Strawberry are: Slugs, which eat the 
leaves of young plants, and Blight, which attacks the foliage, causing it to appear spotty. 
For Slugs, spray with arsenate of lead before and after the bearing season. For Leaf 
Blight, spray two or three times each season with Bordeaux mixture, making at least 
one application before the blossoms open. 
The McFarland Publicity Service, Harrisburg, Pa. 
