61 
the work it seems desirable to put on record what was done in order 
to see where we stand in ease further experiments are undertaken. 
For the work in hand a plat consisting of thirty-six Hale’s Early trees 
was selected. The plat was divided into eighteen blocks of two trees 
each, seventeen of which were treated with the following fungicides, 
while one was left for control. 
(1) Ammoniacal solution of copper carbonate made by adding one- 
half a pint of the concentrated solution* to 11 gallons of water. 
(2) Bordeaux mixture, half strength, 7. ¢.,3 pounds of copper sul- 
phate, 2 pounds of lime, to 22 gallons of water. 
(5) Flowers of sulphur. 
The work was planned in order to test the effect of the foregoing 
preparations on rot when applied as below described. 
(a) Once when the trees were in full bloom. 
(b) Twice; once when in full bloom, and again when the fruit was 
the size of peas. 
(c) Four times; once when in full bloom, then 15, 10, and 5 days, re- 
spectively, before ripening. 
(d) Five times; once when in full bloom, once when the fruit was 
the size of peas, then three times the same as in the last treatment. 
(e) Three times; 15,10, and 5 days, respectively, before the fruit 
ripened. 
As arule, rot is more prevalent while the fruit is ripening or during 
the so-called swelling period. By frequent application of fungicides 
at this time it was hoped that the disease might be overcome. As 
the work progressed four careful examinations were made of the peaches, 
the rotten and healthy ones being determined each time. There was 
no difference whatever, so far as rot was concerned, in favor of any of 
the treatments, the loss of fruit on each tree, with the exception of those 
sprayed with Bordeaux mixture, averaging from 2 to 5 per cent. The 
trees sprayed with Bordeaux mixture were badly injured by the first 
two treatments, the leaves being completely destroyed and every flower 
killed. No further applications were made to these trees, and toward 
the latter part of the season they had practically recovered. The 
damage resulting from the application of the Bordeaux mixture was 
probably due to the fact that air-slaked lime was used in making the 
preparation. Bordeaux mixture, however, even when made with the 
greatest care, often injures peach foliage severely. 
* This was prepared in the usual way by dissolving 3 ounces of copper carbonate 
in 3 pints of strong ammonia. 
