Peach Lkaf Cukl. 279 



has perhaps materially reduced that estimate for recent years. Still 

 in seasons especially favorable to the disease, as igo8 and 1909, serious 

 losses have been sustained by growers who had heretofore apparently 

 controlled the disease very easily. A careful study of a number of 

 such failures has lead us to the conclusion that in most cases want of 

 thoroughness or the application of the spray at the wrong time has 

 been the difficulty. 



Varietal siisceptibility. — It is well known to both growers and path- 

 ologists that some varieties of peaches are affected more frequently and 

 more severely than others. The Elberta, for example, is so liable to 

 this disease that it suffers more or less every season unless properly 

 sprayed. Many of the other varieties commonly grown in this State 

 suffer so little in ordinary seasons as to be regarded by growers as prac- 

 tically immune. However, in seasons especially favorable to the malady 

 even these varieties may curl badly. As is usually the case, these less 

 susceptible varieties are not so desirable commercially as is the very 

 susceptible Elberta. Because of its commercial superiority and marked 

 susceptibility to the Curl, the Elberta has been responsible for the very 

 general and successful practice of spraying for the Curl in our commercial 

 orchards. From the reports from a large number of growers in the 

 State during 1908 and 1909, the following data on varietal susceptibility 

 in New York have been compiled : 



Of the growers reporting varieties most affected: 

 48 give Elberta first place. 

 4 " Elberta second place. 



2 " Early Crawford first place, and 3 others give first place 

 to Crawford, but do not specify whether Early or Late 

 Cra%vford. 

 I gives Early Crawford second or third place, and i gives merely 



Crawford, not specifying Early tor Late. 

 4 mention Niagara as especially affeced. 



