59 
Absolutely 
perfect, 
Treated with ammoniacal solution 3 times.........0....... 64 per cent. 
Treated with ammoniacal solution 6 times........--. Oe eee a4 do: 
Treated with Bordeaux mixture 3 times. ...--...---------- 63. do: 
Treated with Bordeaux mixture 6 times ......-. .----.---- 1a), 200; 
BREE DCR et see a ed eee wate ese pests (82. 7 do: 
These results can not be considered at all decisive and only point to the necessity 
of the presence in quantity of the disease to be combated in order that a compara- 
tive test of fungicides may be of value. These stocks were budded August 6 with 
Duchess, Flemish Beauty, and Anjou. 
Rows VI, VII, VIII, and XXI (French peur stock).—Three rows (VI, VII, anc 
VILL), containing 1,454 stocks, were planted the Ist of May, and one row (XX1I), con- 
taining 468 trees, was planted the 10th of May.* The treatments were identical with 
those described for Row II, the whole number of trees being divided into seven sec- 
tions, six being treated, three with ammoniacal solution and three with Bordeaux 
mixture. 
In Plate V (Figs. 1, 2, 3, and 4) is shown the actual condition of each seedling with 
respect to leaf-blight on the 23d of September, each line representing the grade in 
which the individual seedling was classed. Fig. 4, which occupies a low grade 
relatively, represents the condition of Row XXI, planted one week later. Irom the 
condition of treated and untreated stock it seems reasonably fair to draw the follow- 
ing conclusions: 
(1) Seven treatments, at dates given above, with Bordeaux mixture proved effica- 
cous in preventing the leaf-blight of French pear stock. 
(2) Three treatments of Bordeaux mixture, made at early dates, proved ineffectual 
in the prevention of leaf-blight. 
(3) Ammoniacal solution in no case proved as effectual as Bordeaux mixture. 
(4) From all indications it seems evident that the treatments of this year’s ex- 
periment were made three weeks earlier than necessary, taking into consideration 
the dryness of the spring. The trees were budded August 6 with Duchess, Flemish 
Beauty, and Anjou. 
Row LX (Japan pear stock ).—One row of 466 trees was treated the same as Row IL 
with results almost identical with, but not perhaps so striking, as those obtained 
from Rows VI, VII, VIII, and XXI. The treatments with Bordeaux mixture proved 
thoroughly effectual in the prevention of leaf-blight, in one case giving a block ab- 
solutely free from the disease. The ammoniacal solution was much less effective 
than the Bordeaux mixture. (See Plate v, Fig. 5.) The trees were budded on 
August 5 with Duchess, Flemish Beauty, and Anjou. 
Rows X, XI, XII, and XIII (American pear stock).—Four rows were planted and 
divided into seven sections, six of which were treated and one left untreated. The 
stock, as explained above, was in poor condition when planted and made but feeble 
growth. The record of the condition of the stock as regards leaf-blight is given 
below: 
TABLE 25.—Showing condition of American pear stock as regards leaf-blight. 

Number|Number Number |Number 
Number Ter cee 
of stocks of first of second of third of fourth free fr ae 
alive. ae quality. | quality. quality. discal 
WNIMEALEE! <2 52-22 ase es ene Seiaeee Sees 421 ] 16 50 353 . 002 
Bordeaux mixture,7 treatments........ 326 128 70 34 94 . 392 
Bordeaux mixture, 3 treatments........ BAS Dbl aisiaicreis site's 2 12 PA (ee ae 
Ammoniacal solution, 7 treatments ..... leaner ste alles a oko as 34 OTT) oletoscea 
Ammoniacal solution, 3 treatments..... 325 1 9 32 283 . 003 
* To this oversight in the planting is attributable in part the poor growth made by Row XXI during 
the season, but the inferiority of the stock over those of Rows VI, VI, and VIII aided undoubtedly 
in making the difference more noticeable. 
