15 
Plat. 
Number of vines, date, 
and manner of treat¬ 
ment. 
Yield of 
sound 
fruit 
per plat. 
Average 
yield 
per vine. 
Q.... 
50 vines treated April 30, 
May 15 and 30, and 
June 14, with acetate 
of copper solution. 
Pounds. 
260 
Pounds. 
5.20 
R.... 
8 untreated vines. 
20 
2. 50 
S .... 
50 vines treated April 
30, May 15 and 30, and 
June 14 with mixture 
No. 5. 
255 
5.10 
T.... 
8 untreated vines. 
25 
3.12 
S'.... 
50 vines treated April 
30, May 15 and 30, and 
June i4 with mixture 
No. 5 . 
216 
4. 32 
T' . .. 
8 untreated vines. 
22 
2.75 
U.... 
50 vines treated May 17 
and June 2 with Bor¬ 
deaux mixture; late 
treatment. 
210 
4.20 
V.... 
50 vines treated May 25, 
June 9, with Bordeaux 
mixture, 8 days later 
than U. 
200 
4 
w... 
50 vines treated May 17 
and June 2 same as U, 
excepting ammoniacal 
solution was used. 
220 
4. 40 
Number 
of rotten 
berries 
per plat. 
Number 
of rotten 
berries 
per vine. 
Total rot 
per plat 
in pounds 
of sound 
fruit. 
Percent¬ 
age of 
loss. 
Total 
cost of 
treat¬ 
ments. 
Gents. 
277 
2,176 
5. 54 
272 
1.57 
12 
.6 
37. 50 
Not 
given. 
.00 
113 
2, 472 
2. 23 
309 
.63 
14 
.25 
36 
Not 
given. 
.00 
312 
2, 287 
6. 24 
286 
• 1.77 
13 
.8 
37 
Not 
given. 
.00 
2,112 
42. 24 
12 
5 
.22 
2, 040 
40. 80 
11. 59 
5.50 
.27 
2,618 
52. 36 
15 
6 
.11 
Very little comment upon tlie foregoing* table is necessary, as we be¬ 
lieve it fully explains itself and in a measure answers the questions 
summarized in the first part of this article. It will be seen that seven 
of the fungicides used reduced the amount of rot to less than 1 percent, 
while on the untreated vines the loss averaged 40 per cent. This was 
much less than in an ordinary season, on account of the dry weather. 
In such cases about 75 per cent would have probably been lost. The 
present season was not one either that furnished a good test of fungi¬ 
cides. If more rain had fallen there is little doubt that there would 
have been more rot on the treated plats, more striking differences in the 
degrees of efficacy of the different fungicides, and more grapes actually 
saved. That is, the difference between the amount lost on the treated 
and untreated plats would have been much greater. 
As to the comparative value of the fungicides, the ratios found in the 
figures as given can scarcely be considered such as will hold for other 
seasons and in different climates. This season’s work has shown that 
a difference in locality affects the action of fungicides on foliage; for 
example, the copper acetate, which proved very efficacious with Mr. 
Howell, of South Carolina, burned the foliage so badly in Missouri as 
to ruin the crop for the year. 
Milk of lime and precipitated Bordeaux mixture, one-half strength, 
both proved ineffectual. As regards efficiency the other fungicides 
stood in the following order : 
Modified eau celeste. 
Mixture No. 5. 
Bordeaux mixture and ammoniacal solution. 
Bordeaux mixture. 
Copper acetate. 
Ammoniacal solutiou. 
Copper carbonate in suspension. 
Precipitated Bordeaux. 
