10 



2. Carbonate of copper in suspension — 



Carbonate of copper 2 oz. 



Water 25 galls. 



This is prepared for use in the same way as Paris green by mixing 

 thoroughly with the water. A more evenly distributed mixture 

 can be obtained by first stirring the carbonate of copper into one 

 gallon of water, when well distributed this is poured into the 

 remaining 24 gallons, and the whole thoroughly agitated. This 

 mixture requires more care in application than the ammoniacal 

 solution ; it should be constantly agitated and laid on in a fine spray, 



A COMBINED FUNGICIDE AND INSECTICIDE, 



A series of experiments were conducted at the Central Farm last 

 summer by the writer, assisted by Mi-. Shutt, Chemist to the Experi- 

 mental Farms, with a view to test the degree of strength which a 

 combined fungicide and insecticide could be applied without injuring^ 

 the leaves. The following are extracts from the summary of con- 

 clusions reached after several applications. 



The quantities of chemicals given are on the basis of using 22 

 gallons of water, with ammonia as the solvent. 



Carbonate of copper, 3 oz, in solution, Paris green, If oz. (propor- 

 tion of 1 lb. to 200 galls, of water) caused a slight injury on the third 

 application. 



Carbonate of copper, 1^ oz. in solution, Paris green, If oz. caused 

 very slight injury after the third application. 



Carbonate of copper,3 oz. in suspension, Pai'is green. If oz. caused 

 slight injury in later applications. 



Carbonate of copper, 1^ oz, in suspension, Paris green. If caused 

 no injury. 



RECOMMENDED FOR TRIAL. 



In view of the above results I would therefore recommend foK 

 trial, to a limited extent, mixtures, as folloAVs: — 



(a,) Carbonate of copper 1^ oz. 



Ammonia , ., 1^ pints. 



Water 25 galls. 



Paris green IJ oz. 



