AUXILIARY WORK. 



141 



Californiji. Reports have been received from several of these jjrowers, 

 and while in some instances they are not as complete as desired, the 

 results shown are amply sufficient to determine the practical value of 

 the work undertaken. 



Amono- the more complete and carefullv prepared reports is one 

 from Mr. A. D. Cutts, of Live Oak, Sutter County. The work was 

 cari-ied out in the wnnter of 18!>2-i>H, and was one of the experiments 

 which led to the writer's detailed series of experiments outlined in the 

 present bulletin. In this orchard the spray was not used in 1893 for the 

 control of leaf curl, but was applied for the purpose of destroying the 

 San Jose scale, which was gaining- a foothold in the orchard. The 

 trees infested by scale were scattered through a 40-acre block of the 

 Crawfords Late variet3^ These trees had been marked, and in Febru- 

 ary, 1893, were thoroughly sprayed with the sulphur spray, consist- 

 ing of 15 pounds sulphur, 30 pounds lime, 10 pounds salt, and 60 gal- 

 lons water. Only a few of the trees were entirely sprayed. As curl 

 developed seriously in that region in the spring of 1893, the contrast 

 between the scattered sprayed trees and the remainder of the block 

 was very striking, and Mr. Cutts kindly consented to preserve the 

 records of yield of a few of the sprayed and unsprayed trees for use 

 in this connection. In the table which follows is shown the amount 

 of fruit produced by each of the 9 sprayed trees included in Mr. 

 Cutts's records, as well as the weight and number of first, second, and 

 third quality peaches. The same facts are given for an equal num- 

 ber of neighboring unsprayed trees for comparison. 



Table 40. — Experimental work conducted hy Mr. A. D. Cutis, of Live Oak, Cat., in the 



spring and summer of 1893. 



The average yield of fruit of the sprayed trees given in the table 

 was 166.22 pounds per tree, while the average yield of the unsprayed 

 trees was but 6.44 pounds. This represents a gain in fruit by the 



