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STATE POMOLOGICAL SOCIETY. 



The trees sprayed with copper carbonate in suspension were 

 treated twice — May 21st, and June 12th. The other trees were 

 sprayed but once, June 15. 



As will be seen, this orchard was very severely attacked. Some 

 trees were absolutely without a perfect fruit, and only one-fourth of 

 the crop could be made to pass as "No. 1" fruit, even with the loose 

 methods too often practiced in sorting. 



In general, we conclude from the season's work, 



Jst. Spraying with the copper compounds is beneficial in check- 

 ing the attacks of the apple scab. The increase in No. 1 fruit 

 amounting in many cases to nearly sixty-five per cent. 



2d. There is little difference in value between the modified eau 

 oelebte and the ammoniacal solution of copper carbonate. The 

 materials for the former are always obtainable hence in some respects 

 this will be more commonly used. 



3d. Simple carbonate of copper in suspension has no marked 

 effect on the fungus. 



4th. A large proportion of the fruit attacked was but slightly 

 affected, the attack being recent. It appears probable, therefore, 

 that spraying later in the season will prove beneficial. 



HOW TO PREPARE THE MIXTURES. 



1 . Modified eau celeste — Dissolve two pounds sulphate of copper 

 ("Blue stone") in two gallons hot water. In another vessel dissolve 

 two pounds ca:rbonate of soda ("sal-soda") ; mix the two solutions 

 and add one pint strong ammonia. When ready for use, dilute to 

 twenty-eight gallons. The copper sulphate should be dissolved in a 

 wooden vessel as zinc or iron will corrode. 



2. A inmonio- copper carhonite solution — The most satisfactory 

 formula used during the present season was : 



