238 
Here are shown the satisfactory results arising from the use of the 
ammoniacal solution of copper carbonate. The 11 sprayed trees re¬ 
tained from 80 to 98 per cent of the foliage, the average being 91 per 
cent. On the other hand, the 10 untreated trees, with one exception, 
had not retained more than 8 per cent of the foliage. The one excep¬ 
tion, apparently a tree not badly infested by Cercospora , had still upon 
it about 45 per cent of its foliage. The foliage remaining on the 10 
control trees averaged 8 per cent, but exclusive of the one exceptional 
tree it averaged only 4 per cent. 
Table 2. —Showing condition on August 3 of treated and untreated almond trees, spragcd 
ivitli modified eau celeste, new formula. 
No. 
Treatment. 
Per cent 
of foliage. 
No. 
Treatment. 
Per cent 
of foliage. 
22 
Treated. 
95 
29 
Unfrented _ 
4 
23 
.do. 
95 
30 
Treated ..__ 
95 
24 
Untreated. 
8 
31 
.do. 
94 
25 
.do. 
14 
32 
Untreated __.. 
8 
26 
Treated. 
97 
33 
Treated 
92 
35 
27 
.do. 
97 
34 
Untreated.. 
28 
Untreated. 
3 
This table shows as good results from treatment with modified eau ce¬ 
leste as resulted from the use of ammoniacal copper carbonate. The 
7 treated trees retained from 90 to 97 per cent of the foliage, the 
average being 94 per cent. The 6 untreated trees, with one exception, 
as in the former case, retained only from 3 to 14 per cent of their leaves. 
The exceptional tree in this case retained about 35 per cent of its foli¬ 
age. Including this 1 tree, the average foliage on the untreated trees 
was 12 per cent, but exclusive of this tree it dropped to 7 per cent. 
By comparing the trees treated with fungicides, we see that 91 per cent 
of foliage was preserved by the use of ammoniacal solution of copper 
carbonate, while 94 per cent was retained by using the modified eau 
celeste. This is so trifling a variation that it may be accounted for by 
the fact that the trees at the east, which were sprayed with eau celeste, 
are on better ground, are larger, and more healthy than those at the 
west, which were sprayed with the ammoniacal copper carbonate. 
These more favorable conditions show as well on the untreated trees as 
on the treated ones. The average amount of foliage retained on the 
untreated trees at the east was 3 per cent greater than that of the un¬ 
treated trees at the west. This, curiously enough, is the difference in 
per cent of foliage on the treated trees at the east and on those at the 
west, which would seem to indicate that the action of the two sprays is 
almost exactly the same. If there exist any advantage of one spray 
over the other, so far as effectiveness as a fungicide is concerned, the 
advantages have not manifested themselves thus far. 
Had the first treatment of .these trees been made in the winter, as 
recommended below, the terminal leaves would not have become so 
generally infested by Cercospora and a higher percentage of foliage 
would have been retained. The method to follow is therefore evident. 
‘ • *• * : s * 1 i • • 
