Linn County Nursery, Center Point, Iowa 37 
Insecticides for Biting Insects— Continued 
IRSENITE OF I.IME. 
White Arsenic 2 ounces 
Sal Soda Vfe pound 
Fresh Lime 4 pounds 
Water 50 gallons 
Boil the arsenic and soda together in a small quantity of water till the 
arsenic is dissolved, slake the lime, strain and add to the barrel of water; then 
add the soda and arsenic solution and stir for a few minutes. 
HELLEBORE. 
White Hellebore 1 ounce 
Water 2 gallons 
Or to be dusted undiluted on attacked plants. 
RESIN-LIME MIXTURE. 
Pulverized resin 5 pounds 
Concentrated lye 1 pound 
j^ish oil, or any cheap animal oil except tallow 1 pint 
Water 5 gallons 
Place oil, resin and a gallon of water in an iron kettle and beat until 
resin is softened; add lye solution made as for hard soap; stir thoroughly; add 
remainder of water and boil about two hours, or until the mixture will unite 
with cold water, making a clear amber colored fluid. If the mixture has boiled 
away too much, add sufficient boiling water to make 5 gallons. 
For use, one gallon of this stock solution is diluted with sixteen gallons of 
water and afterwards three gallons of milk-of-lime or whitewash added. For 
cabbage and cauliflower add one pound of Paris green to eighty gallons of the 
above mixture. ThfM of course si not be uNed lifter the plants begrln to head. 
COMBINATION OF FUNGICIDE AND INSECTICIDE. 
When spraying for a fungous disease except when plants are in the dor- 
mant 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 arsenit'e 
or arsenite of lime, letting the Bordeaux answer for the specified amount of 
water. 
FOR SUCKING INSECTS — KEROSENE EMLUSION. 
Kerosene (coal oil) 2 gallons 
Rain water 1 gallon 
Soap ! V4 pound 
Dissolve soap in water by boiling; take from fire and while hot turn in 
kerosene and churn briskly for 5 minutes. To be diluted before using, with U 
parts water, for scale, insects and all sucking insects. 
TOBACCO INFUSION. 
Tobacco (waste or stems) 1 pound 
Boiling water 4 gallons 
Add hot water to tobacco and let stand until cold. Strain and add 1 lb. 
of whale oil soap or 2 lbs. of soft soap to each 50 gallons of infusion. For 
aphis. 
PYRETH RUM, or INSECT POWDER. 
Pyrethrum Powder 1 ounce 
Water 3 gallons 
For Dry Application — Mix thoroughly one part by weight of insect powder 
with 4 of cheap flour and keep in a close vessel for 24 hours before dusting 
over plants attacked. 
SULPIIUR-LIME-SALT MIXTURE. 
Quicklime (fresh) 15 pounds 
Sulphur IB pounds 
Salt 15 pounds 
Place lime in kettle; add sufficient water to slake and stir in sulphur 
while slaking. Boil until dissolved, an hour or more. Add salt and boil 15 
minutes long. Add sufficient water to make 50 gal. and apply while warm. 
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 piaster or some 
other perfectly dry powder. Psc Paris green and other arsenites at the rate of 
1 lb. to 10 lbs. of the dry powder, Boareaux may be made in the usual way 
and water evaporated and residue pulverized and applied dry. 
FUNGICIDES — BORDEAUX MIXTURE. 
Copper Sulphate 4 pounds 
Quicklime (not air slaked) 4 pounds 
Water (one barrel) 40 to 50 gallons 
Dissolve the copper sulphate (blue stone) by suspending it in a wooden ves- 
sel containing 1 four or five gallons of hot water. Slack the lime in another 
vessel. The slacking should be done slowly, otherwise it is apt to be granular. 
Pour tho copper sulfate solution into the barrel after it has become cooled. 
Half fili the barrel with water, add the slaked lime, fill the barrel with water 
and stir thoroughly. It is advisable to strain the lime through a coarse sack 
or sieve. Never add the lime until ready to use. 
