
27 
TABLE 10.—Showing the total number of clusters on the treated and untreated. vines 
June 9; also the average number of clusters per vine. 


| Average | 
He | Total No. No. of | 
Plat. Kind of treatment. of clusters. clusters per 




| vine. 
See Michecaimipnk! =o 20,2 soe a eS A ct | 364 36.4 
2, 4 Bordeanx mixture, full strength, early -....=.-..:2:..---.-2.---- 206 20. 6 
So) BERLE ST Sr i SS ge fen ne Po ee 189 18.9 
| 4 | Bordeaux mixture, half strength, early -.-.-.....-..-...---..---. 142 14.2 
en ei Sam oe ee 3 eee ey COS EES tee 155 15.5 
So | -bordesns mixaure, fall streneth) lates... 22022 2. ses 8t 2 l =e 239 23.9 
Py ged REESE TES SRS ee ee re ee ee 155 15.5 
8 | Bordeanx mixture, half strength, late: -...................-- ae 175 17.5 
SPUN RORMINCND noe ne | ee ns ea eee be een 106 10.6 
10 | Bordeaux mixture, full strength, early, 4sprayings -.....-.--- Rae! 93 9.3 
Tipo) Mae IN ERPS Se See ee ee ee ee ee ee eee 177 eT 
| 12 +} Bordeaux mixture, full strength, late, 3sprayings..-.....-..-..--. 109 10.9 
nse) ELODIE SS er SMe Se a ee eee eS ee eee 150 12,0 
14 | Bordeaux mixture, half strength, early, 4 sprayings-...-.....-.-.---- 98 9.8 
Pai) EIT SEF Te oe ee Se ee ee ee 148 14.8 
16 | Bordeaux mixture, half strength, late, 3 sprayings.........-...-- 165 | 16.5 

As shown by the foregoing the untreated vines contained 1,444 clus- 
ters, while the treated gave 1,227 clusters, a difference of 217 clusters, 
or 15 per cent in favor of the untreated. This may be taken as the 
normal condition of the vineyard at the time rot made its appearance 
or when the results of the treatments actually began to show. The 
greater number of clusters on the untreated vines is accounted for by 
the fact that as a whole they were larger and more vigorous. 
Fifth treatment (June 22).—In accordance with the original plan the 
treatments on plats 10, 12, 14, and 16 were omitted.- Plats 2,4, 6, and 
8 received their regular sprayings. No injury whatever had resulted 
from any of the previous sprayings. Black rot had made its appear- 
ance on the fruit, but not in sufficient amount to produce any serious 
injury. On the treated vines 62 berries showing rot were found, while 
on the untreated 96 berries were observed. 
Sixth treatment (July 7.)—The plats treated on June 22 were again 
sprayed for the last time. No injury had resulted from the previous 
sprayings. Black rot, however, had produced serious injury, especially 
on the untreated vines. To obtain information as to the actual amount 
of injury the clusters on all the vines were counted and three divisions 
made of them as in the case of Vineyard 1. The results of the count 
are set forth in the accompanying table: 
