60 
The inference from the above table is plainly that only seven treatments of the 
Bordeaux mixture were of material value in preventing the disease. The trees were 
budded on August 7 with Duchess, Flemish Beauty, and Anjou. 
Rows XIV, XV, XVI, XVII (American and French apple stock).—Of the four rows 
treated for the prevention of this disease, two were American and two French stock. 
The treatments were made as described for the other stock, but owing to the fact 
that scarcely any mildew made its appearance no evidence as to the efficacy of the 
fungicides could be obtained. The trees were budded on August 7 with Twenty 
Ounce, Fameuse, and Early Strawberry. 
Peach seedlings.—Eighty-three of these lived and they were treated three times 
with Bordeaux mixture and ammoniacal solution without injurious effects. Owing 
to the nonappearance of leaf curl no results were obtained. The trees were budded 
on August 7 with Early Crawford. 
Treatment of apple seedlings for powdery mildew.—One row of apple seeds was planted 
in the usual way the last of April, and covered with a slight mulching of muck. 
The row was divided, into five sections and treated with ammoniacal solution and 
Bordeaux mixture, as shown below. On October 9 every seedling was examined and 
classed as diseased if the slightest trace of mildew was present, and healthy if no 
disease was seen. While it was evident that no good effects were produced by the 
early sprayings as far as prevention of the mildew was concerned, nothing can be 
concluded from the experiment as to the efficiency or inefficiency of the mixtures 
themselves. The mixtures were without doubt washed off before the appearance of 
the disease. The treatments were made May 21, June 3, 24, July 9, 24, and August 8 
where six applications were tested, and May 21, June 3 and 24 where three were 
tried. The disease appeared the first week in September. A tabulated result of the 
count is given below: 
TABLE 26.—Showing the results in the experiment for prevention of powdery mildew in 
apple seedlings. 

No. of | No. of | Per cent 
healthy. | diseased. | diseased. 


Ammoniacalssolution, sioreahmenoSs. s.> eae eee aoe 165 159 49 
Ammoniaca) solution), 6 treatments = 22-2-- 5-2 525-2)-- ee eee 154 104 40.3 
IBerdeauxs MixXfUre; So broghmMentsens sae e see eee. eee ae) eee ee 73 168 69.7 
BoLdeaixe mixbures 6 breabmentsee- see. as eee ee eee ee ere eee 106 119 52.8 
Wmibreated 51222 :23./fSsie Ses Se eke ease ae ee COR ep te ee 64 84 56.7 


AN EXPERIMENT IN THE TREATMENT OF PEACH ROT. 
(Monilia fructigena Persoon.) 
The rot of peaches is unquestionably one of the worst fungus diseases 
with which the growers of this fruit have to contend. It is especially 
prevalent on the early crop and for this reason is more than usually 
feared, as the profits on peaches at this time are as a rule greater than 
at any other season. 
In the hope of obtaining information that would throw light on the 
treatment of this disease, a series of experiments was made in the 
orchard of Mr. James S. Harris, near Still Pond, Md. At the outset 
it may be as well to say that the results of the work were wholly nega- 
tive, this being largely due to the small amount of rot which prevailed 
on both treated and untreated trees. In spite of this nonsuccess of 
