SPRAYING 243 



the only change would be a slight reduction in the 

 strength of the bordeaux, using only 2 pounds of 

 copper sulphate, where 3, or perhaps 4, pounds 

 might be used upon the other fruits. 



SPRAYING STONE FRUITS 



" For the spraying of peaches the substitution of 

 2 pounds of copper sulphate in 50 gallons of water 

 is recommended in place of the first application of 

 bordeaux. The spraying must be done during the 

 latter half of March or the first half of April as 

 preventive against the attack of the leaf curl. An 

 application of weak bordeaux and an arsenite can 

 also be made to advantage within a week after the 

 fruit has set when the curculios are troublesome, 

 or in the case of varieties whose fruit is subject to 

 the attack of brown spot and other fungous dis- 

 eases. Other sprayings are seldom desirable on 

 account of the danger of injuring the foliage. 



" The only exception would be in the case of the 

 early varieties of peaches and plums and sweet 

 cherries, which should be sprayed with either a 

 self-cooked mixture of lime-sulphur or with a 

 diluted solution when the fruits are about three- 

 quarters grown, provided the conditions are favor- 

 able for the attack of brown rot. 



"In the case of grapes that have been seriously 

 injured by black rot, it is often a good plan to spray 

 the vines while dormant with copper sulphate solu- 

 tion, 2 pounds in 50 gallons of water, or with bor- 

 deaux when the blossom buds first show, following 

 it up with the first, second, and third applications 

 mentioned above. As a rule, this will suffice. If 

 there is much rot present the latter part of July 

 upon unsprayed vineyards, and conditions are favor- 



