10 BULLETIN 1434, U. S. DEPARTMENT OF AGRICULTURE 
The standard procedure followed in making the test was as follows: 
Early in the season plots were marked off of sufficient size to insure 
an adequate quantity of berries for the storage tests. Spray was 
applied to these plots as noted in the various tables. One plot 
(m some cases two or more) was held as a check and received no 
spray throughout the season. The berries from the different plots 
were harvested by experienced pickers, care being taken to avoid 
berries from the fringe area at the junction of plots. The samples, 
properly labeled, were hauled to the warehouse and stored with the 
remainder of the crop until ready for shipment. They were then 
milled and sorted in the usual manner by experienced employees 
and packed in standard shipping boxes. In the earlier tests a full 
box was used for each unit, but later three and four samples, respec- 
tively, were put in ^-barrel and half-barrel boxes. Usually three 
units were taken from each sprayed plot, in order to allow three suc- 
cessive examinations to be made without handling any sample more 
than once. The boxed berries were then shipped to some market 
and held in storage for varying lengths of time, usually in a commer- 
cial fruit warehouse. In 1922 the storage tests were conducted in 
San Francisco, Calif., in 1923 and 1924 in Portland, Oreg., and in 1925 
in Washington, D. C. This form of procedure was followed in order 
to give the experimentally sprayed berries the same kind and degree 
of handling that commercial berries receive. 
Franklin's 7-sample method was used throughout the experiments 
to determine the percentage of rot {2) . Seven cups of berries were 
taken from each lot to be examined, two from near the top of the 
box, three from the center, and two near the bottom, the samples 
being spaced equidistantly with reference to one another. Rotten 
berries were carefully sorted out of these samples, and both decayed 
and sound berries were then counted. The percentage of spoiled 
berries thus found was considered to be representative of the amount 
of rot in the box as a whole. 
PRELIMINARY EXPERIMENTS 
The spraying experiments outlined for the first season (1922) were 
based directly upon the schedules recommended for eastern cranberry 
bogs (8) . This program calls for three, or in some cases four, appli- 
cations of Bordeaux mixture— (1) at the hook stage, (2) after blos- 
soming, (3) two weeks later, and (4) not later than August 15. In 
addition to these an earlier application of sprav was to be made to 
control the Sclerotinia disease. The tests were made on a section of 
the Howes variety on the Dellinger bogs at Clatsop, Oreg. It soon 
became evident that difficulties would be encountered in fitting this 
schedule to the bog selected for the tests. The Sclerotinia spray was 
applied on May 27 when new uprights were just starting to grow. 
After this time the development of the vines was exceedingly irregu- 
lar, no definite hook-stage period ever appearing. The spray sched- 
uled for this time was finally applied on June 22, after some bloom 
had appeared all over the bog, but most of the uprights were in the 
hook stage or an even earlier state of development. Blooming con- 
tinued general over the bog for more than six weeks. The after- 
