238 MINNESOTA STATE HORTICULTURAL SOCIETY. 



FORMULAS FOR FUNGICIDES AND INSECTICIDES. 



Fungicides. 



DILUTED BORDEAUX MIXTURE. 



Copper Sulphate 4 lbs. 



' Quick Lime 4 lbs. 



Paris Green (for leaf-eatiug insects) 4 oz. 



Water (1 barrel) 40-50 gals. 



Dissolve the copper sulphate by suspending it in a wooden or 

 earthen vessel containing four or five or more gallons of water. 

 Slake the lime in another vessel. If the lime, when slaked, is lumpy 

 or granular, it should be strained through coarse sacking or a fine 

 sieve. Pour the copper sulphate solution in a barrel, for it may be 

 dissolved in this in the first place,)half fill the barrel with water, add 

 the slaked lime, fill the barrel with water and stir thoroughly. It is 

 then ready for use. 



Stock solutions of dissolved copper sulphate and of lime may be 

 prepared and kept in separate covered barrels throughout the 

 spraying season. The quantities of copper sulphate, lime and water 

 should be carefully noted. 



COPPER SULPHATE SOLUTION. 



Copper Sulphate 1 lb. 



Water 25 gals. 



As soon as dissolved it is ready for use. For use before the buds 

 open only. 



AMMONIACAL COPPER CARBONATE. 



Copper Carbonate 5 oz . 



Ammonia 2 qts. 



Water (1 barrel) 40-50 gals. 



Dissolve the copper carbonate in the ammonia. The ammonia 

 and concentrated solution shoixld be kept in glass or stone jars, 

 tightly corked. It is ready for use as soon as diluted with the 50 

 gallons of water. To be used when Bordeaux cannot be applied on 

 account of staining the fruit. 



CORROSIVE SUBLIMATE. 



For potato scab soak the tubers for \% hours in a solution of 2 oz. 

 in 16 gals, 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 seeds should be planted, and any solution left 

 over should be poured into a hole in the ground. 



Insecticides. 



KEROSENE EMULSION. 



Kerosene (coal oil) 2 gals. 



Rain water 1 gal. 



Soap i lb. 



Dissolve soap in water by boiling; take from fire, and, while hot, 

 turn in kerosene and churn briskly for five minutes. To be diluted 

 before vise with eight parts of water. 

 For bark lice and other sucking insects. 



