330 Report or tHe Hortricu.tTurist. 
In nearly every test this table shows very small percentages of 
mildew. With the winter treatment the ammoniacal solution of 
copper carbonate gave the best results, 1.4 per ct. of mildewed 
fruit where the check row had 16.5 per ct. The other winter 
treatments ranged from 2 per ct. to 4 per ct. The row which 
received the winter treatment only, 1 oz. copper sulphate to 
1 gal. water, had 9.3 per ct. of mildewed fruit. This was 7.2 
per ct. less mildewed fruit than its untreated row yielded, but 
was considerably higher than the percentages of the other check 
rows. 
The percentages of the tests in the first three series are particu- 
larly low, varying from .9 per ct. to 3.5 per ct. and the checks 
from 3.4 per ct. to 7.8 per ct. The very best was soda-Bordeaux 
in Series II, .9 per ct., the next lowest was ammoniacal solution 
of copper carbonate in Series II with 1.2 per ct. The tests with 
potassium sulphide gave the highest percentages in Series I and 
II and second highest in Series III. The results with strong am- 
moniacal solution of copper carbonate were very favorable, being 
from 1.3 per ct. to 1.8 per ct. 
In the results for this one year there was no gain derived from 
the winter treatment. The soda-Bordeaux and copper carbonate 
solutions gave slightly better results than potassium sulphide did, 
but these differences are not great enough to be of any significance. 
RECOMMENDATION. 
In Bulletin 133 potassium sulphide, 1 oz. to 2 or 3 gals. water, 
was recommended as the best remedy. The results of three years 
show that it is still the best fungicide the Station has thoroughly 
tested. Spraying should be begun very early just as the buds 
are breaking and continued at intervals of about ten days. 
Further testing will be necessary to determine the relative 
merits of soda-Bordeaux mixture and the copper carbonate solu- 
tions in comparison with potassium sulphide solutions for check- 
ing gooseberry mildew. 
