light and uneven, while the commercial vineyard which contains mostly 

 Concords with a few other hardy varieties produced a very good 

 crop. 



In most cases there are two vines of each variety, one of which has 

 been sprayed, for several seasons, while the other has been left 

 unsprayed. There was a very marked difference in the hardiness of 

 the sprayed and unsprayed vines of the same variety. In many 

 cases the sprayed vine bore a good crop while the unsprayed was 

 barren. The cause of this is apparent. The sprayed vines being 

 free from disease hold their foliage longer and are thus enabled to 

 ripen their wood and develop their buds to a greater extent than 

 those which lose their leaves while the wood is green and the buds 

 are immature. It is unquestionable that ripe wood and mature buds 

 are less liable to injury by frost than green wood and immature buds. 

 The beneficial effects of proper spraying are even more noticeable in 

 the cro[) of the year following the treatment than at the time of 

 application. In 72 of tlie varieties in the following table, the 72 

 sprayed vines produced 725 clusters weiging 187 pounds, while the 

 72 unsprayed produced 473 clusters weighing 118 pounds, 4 ounces. 



Where only one vine of a variety was grown it was sprayed and 

 the place for the unsprayed vine in the table is filled by a dash. 

 The presence of an unsprayed vine that bore no fruit is denoted by a 

 zero. 



