AUXILIARY WORK. 



139 



T.\BLK 39. — Experimentnl vnrk comlucted hi/ Mr. M. O. Loumsdale, of Lafayette, Oreg., 



in the fipriiKj and Hiunmer of 1S95. 



But few comments upon the precedinj^ table are required. Tt makes 

 the fact perfectly evident that two spring sprayings are sufficient to 

 almost absolutely control leaf curl in the Willamette Valley. In a 

 letter written June 25, 1895, Mr. Lownsdale says: 



Peach leaf curl has not developed a-s badly in this section as it did last year. I 

 have estimated that about 40 per cent appeared on most of my control trees. Two 

 sprays with lime, 10 and 15 pounds, and copper sulphate, 5 pounds, were an abso- 

 lute success. Lime in the amount of 15 pounds gives the best result*:, there being 100 

 per cent of healthy foliage on trees sprayed with this amount and 5 pounds of cop- 

 per sidphate. Practically the same results were obtained with two applications of 

 the ammoniacal copper carbonate. It is impossible to find a curled leaf on acres and 

 acres of treated trees. 



In the Rogue River Valley, in the southern tier of counties of Oregon, 

 the conditions are somewhat more favorable for peach culture than in 

 much of the Willamette Valley. The climate is somewhat intermedi- 

 ate in character between that of northwestern Oregon and northern 

 California. Peach culture is quite extensive about Ashland, Medford, 

 etc. The reports of Mr. E. F. Meissner, of Kerby, Josephine County, 

 and of Mr. N.' S. Bennett, of Medford, Jackson County, are fairly rep- 

 resentative of those received from experiments conducted in southern 

 Oregon. Mr. Meissner's report again shows the great effectiveness of 5 

 pounds of copper sulphate, 10 pounds of lime, and 45 gallons of water. 

 With this formula he sprayed 4 Salway trees 4years old, leavingan equal 

 number unsprayed for comparison. Two treatments were given, the 

 first February 22, the second March 10, 1895. From the sprayed 

 trees 10 per cent of the foliage was lost from curl, while from the 



