The Spraying of Orchards. 



129 



centers of distribution of the spores whicli spread the disease during 

 the warm days of the new year. If not controlled it is a very seri- 

 ous disease and has caused the entire ruin of many crops of plums 

 and of peaches. 



The most important treatments made to control this disease are 

 probably the following : 



First. Spray the trees before the buds break with the copper- 

 sulphate solution. 



Second. When the blossoms have fallen apply the Bordeaux 

 mixture. 



Third. When the fruit is about two-thirds grown, repeat the second. 



Fourth. If necessaiy spi^ay with the ammoniacal solution of 

 copper carbonate.* 



That part of the following table relating to the fruit rot has been 

 prepared from notes taken August 25th. Notes on the leaf spot were 

 made October 18th, when the effects of the treatments were most 

 visible. The figures represent the degree of perfection of the 

 foliage and of the fruit, so the greater the figure the less is the 

 severity of the disease. 



* This fungicide is made bj' dissolving one ounce of the carbonate of copper 

 in ammonia, and then dilating the solution with nine gallons of water. Before 

 dilution, the blue ammonia liquid should be kept in tightly corked bottles. It 

 may then be used as required. 



9 



