92 
Plat II. 
Treated with tlio ammoniacal copper carbonate solution. 
Number of vines. 221 
Total number of bunches. 3,135 
Number of diseased bunches. 80 
Number of healthy bunches.-. 3, 055 
Per cent, saved. 97.5 
Plat III. 
Treated with copper carbonate in suspension. 
Number of vines. 167 
Total number of bunches. 708 
Number of diseased bunches. 45 
Number of healthy bunches. 663 
Per cent, saved. 93. 64 
Plat IV. 
Treated tnree times with the Bordeaux mixture, followed by five applications of the 
ammoniacal copper carbonate solution. 
Number of vines. 186 
Total number of bunches. 1,866 
Number of diseased bunches. 51 
Number of healthy bunches. 1,815 
Per cent, saved. 97.27 
Plat V. 
No treatment. 
In this plat, consisting of 179 vines, every bunch was diseased, so that according to 
the classification adopted the loss was total. By the 21st of July the majority of 
the bunches had fallen. On the 30th, however, it was thought best to count all 
bunches which had two or more healthy berries upon them. As a result of this count 
it was found that the yield was 170 bunches, none of which were fit for market. 
Bringing together now the several percentages of fruit saved we 
have for— 
Bordeaux mixture. 99.20 
Ammoniacal copper carbonate solution. 97.50 
Copper carbonate in suspension. 93.64 
Bordeaux mixture and ammoniacal copper carbonate solution.97.27 
Untreated . 00.00 
Cost of the various treatments .—The total cost of treating each plat, 
estimating the labor at 15 cents an hour, was as follows: 
Plat I.— 203 vines. 
Bordeaux mixture. 
210 gallons of mixture... $4. 41 
14 hours labor. 2.10 
Total. 6.51 
Cents. 
Cost per vine. 3.2 
Cost per pound of fruit. 1.2 
