16 BULLETIN 1252, U. S. DEPARTMENT OF AGRICULTURE. 
The results of the various counts show that the sprayings caused 
a significant reduction in the blossom infection. 
Slight fohage burning was evident on the lime-sulphur plat by the 
middle of April, and the cherries from the Bordeaux plat were prob- 
ably a little smaller than those from the unsprayed trees, but the 
injury of any kind resulting from spraying was very slight. - 
There was again practically no brown-rot in the orchard, and no 
counts were made at picking time. The cherries were picked on June 
26, and the fruit picked in the morning was held separate from, 
that picked in the middle of the day. The results of a shipping test 
are shown in Figure 11. The cherries picked in the cool of. the 
morning developed less rot than those picked in the middle of the 
day, and the sprayed and dusted cherries had very much less than the 
untreated fruit. 
SPRAYING EXPERIMENTS IN 1919. 
The experiments in 1919 were continued in the same Napoleon or- 
chard. The spray materials used were lime-sulphur 1 to 50 plus a 
casein spreader, a 
SF LEROCENTACE 
Ee GE PERCENTAGE a BUN oT oi tral ee 
WME OME, ORCHARD TREATMENT Ss ecavivee THRE 1 THE mixture ( pounds 
RiGee foe Ee ee Ee gb inestesa ae 
eee | gallons, neutralized 
Z . ° 
O.\ OEIN-PISHOL SOLE with limewater) plus 
OO FELEQE BUT LAST 9 7 rosin-fishoil soap and 
- TELICATION OPUT TED \ K 
85-15 sulphur dust 
OO LIME SULFTIUR 17°20 85 p er ¢ ent sul- 
AS ABOVE BUT LAST 5 
GEAION MIT IED phur and 15 f fg ney 
a UNTREATED arsenate re ae ) ; 
& The applications 
were made on June 
Fic. 11.—Development of brown-rot on sprayed and un- i and 16 < 
sprayed cherries; experiments of 1918. The cherries x ° 
were picked on June 26, shipped in pony refrigerators to The cherries from 
Wenatchee, Wash., held under ice till July 2, and with- ] d d ] 
out ice one day, the notes being taken on July 3. the dusted and un- 
treated plats were 
larger and had a better appearance than those from the sprayed plats. 
No distinct spray injury developed before picking time, but on Sep- 
tember 16 a severe defoliation and yellowing affecting all the leaves 
was observed on the Bordeaux plat. Six days of rain had preceded, 
ending on September 10, and this was the first heavy rain after the 
spray application of June 18. It is noteworthy that such severe 
burning could be produced three months after the application. Prac- 
tically no brown-rot developed in the orchard. The Bordeaux and 
lime-sulphur plats were picked June 25; showers followed, and the 
dusted and untreated plats were picked June 27. The first picking 
was held without cooling till June 27, when the shipping test shown 
in Figure 12 was started. The dust does not appear to have been as 
efficient as the sprays, but the fact that the picking was interrupted 
by showers may have modified the results. : 
SUMMARY OF SPRAYING EXPERIMENTS ON CHERRIES. 
The 5-year test has indicated that sweet cherries in the lower 
Willamette Valley are rather susceptible to spray injury. Lime- 
sulphur has sometimes injured the foliage, and Bordeaux mixture 
