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Report oF Horticunturist oF ExpERIMENT Station. 695 
scab, is nearly related to it and resembles it very much in general 
appearance and in habits of life, so far as these habits are at 
present known. Since the dilute Bordeaux mixture had given 
such good results when used against the apple scab it was thought 
that it might also prove effective against pear scab. For this 
reason the experiments with pears in 1893 were planned so as to 
test the efficacy of the dilute Bordeaux mixture against pear 
scab. No attempt was made to compare the merits of different 
fungicides. 
A large old orchard near the Experiment Station, situated on 
the upland, about two miles west of Seneca lake, offered a most 
favorable opportunity for the proposed investigation, and the 
owners, Messrs. E. Smith & Sons, very kindly offered the use of 
it for this purpose free of charge. 
Some varieties in the orchard were varticularly susceptible to 
to the attacks of the scab, and on account of the preval nce of the 
scab for several years had produced comparatively little first-class 
fruit. Two of these varieties, namely, White Doyenné and Seckel, 
were accordingly selected for treatment. The White Doyennés 
were used simply to test the efficacy of the dilute Bordeaux mix- 
ture. The Seckel trees were used for the double purpose of test- 
ing the efficacy of the dilute Bordeaux mixture and also for 
comparing the value of two treatments before blooming with 
three treatments before blooming. Several other interesting and 
practical questions invited investigation, but it was thought best 
not to complicate the experiments by trying to make them answer — 
too many questions at once, and, therefore, attention was directed 
chiefly to the two objects just mentioned, namely: 
1. To determine the value of the dilute Bordeaux mixture for 
preventing pear scab. | 
2. To determine the best number of treatments prior to 
blooming. 
In one part of the orchard three rows of Seckel trees were 
selected for the experiment. Each row originally contained 
thirty-six trees, but there are now some vacant places and occa- 
sionally a tree of some other variety is found so that the number 
of Seckel trees, included in the experiment was but sixty-four, of 
which number fourteen were sprayed six times, fourteen were 
_ sprayed five timesand thirty-six were left untreated for comparison. 
