AUXILIARY WORK. 135 



old, and of the following varieties: St. John, Barnards Early, IlinTuan, Switzerland, 

 Gold Droj), and Early Freestone. Some of these varieties curled very badly last 

 year, especially Early Freestone. The soil is quite uniformly a gravelly loam, with 

 clay subsoil under all varieties. I matle only one application with each ftirmula. I 

 think two applications woidd have been l)etter. I sprayed 50 trees and then onutted 

 50 in each plat, or with each formula. I think Formula C gave as good results as 

 any of them.* 



After the trees were in full l(!af I invited neighboring fruit men to go through the 

 orchard and note the conditions of the trees sprayed and unsjirayed. They found 

 the foliage of trees that had l)een sprayed almost free from curl, while the unsprayed 

 trees were badly curled. * * * The unsprayed trees had a larger percentage 

 of small dead limbs through the top than those that were sprayed, and the prospect 

 for future crops is therefore better where the trees were sprayed. * * * I hope to 

 follow the work up more extensively next spring, and will begin the work earlier in 

 the season, if necessary. If Formula C will continue to give an good results as it did 

 last spring, I prefer to use it. 



Mr. S. I. Bates, of Shelby, Mich., sprayed a few Stump the World 

 trees in the spring of 18U4, leaving an equal nuuil)er unsprayed for 

 comparison. The crop from the sprayed trees was double tliat from 

 the unsprayed trees at their side, and a large percentage of the foliage 

 was also saved. Mr. Bates states that the spray seems to put new life 

 and vigor into the trees, especially young trees. With respect to the 

 action of curl on old trees, he writes that there is an old orchard just 

 across the road from his own whiih has had curl until the trees have 

 no bearing wood left except at the extreme tops, and the owner "does 

 nothing to prevent the disease and gets but little fruit. " ^ 



NOTES ON THE AUXILIARY EXPERIMENTS IN OREGON. 



The climatic conditions under which peach culture is pursued in Ore- 

 gon and Washington vary greatly. At the east of the Cascade 

 Mountains the conditions approximate in many districts those pre- 

 vailing in much of California. At the west of this range local 

 influences determine the greater or less adaptation of each valley or 

 region to the cultivation of the peach. Generally speaking, however, 

 the humidity of the atmosphere for a major portion of the year is 

 much in excess of that prevailing generally at the east of the Cas- 

 cades or in California. In this respect also this northwest region 

 is quite distinct from the conditions met with in most of the peach- 

 growing regions of the East. In fact the climate of western Oregon 

 and Washington is such as to call for separate consideration in connec- 

 tion with our present work. For this reason special effort has been 



*This is the same formula that was found very satisfactory by Mr. Smith Hawley, 

 at Ludington, Mich., and by the writer in the Sacramento Valley. 



^ There are thousands of such peach orchards in the peach districts of the United 

 States. To those who are interested in the renewal of young and Ijearing wood upon 

 lower limbs and upon old trees, the writer would refer to the data presented in Chap- 

 ter V of this bulletin, where the influence of sprays on the vegetation of trees has 

 been quite fully considered. 



