392 ReEporT OF THE HORTICULTURAL DEPARTMENT OF THD 
sprayed in bloom is shown in Fig. 2. The following table shows 
the number of fruits which set on typical branches sprayed 
repeatedly in bloom compared with typical branches not sprayed! 
in bloom, 
TABLE XI.—FRUIT-SETTING ON TYPICAL BRANCHES OF FALL PIPPIN. 
Sprayed repeatedly Not apie ie in 
in bloom. oom. 
No Por ct. No. Per ct. 
Whole number of clusters examined.... Zou 218 
Clusters which set no fruit............ ‘ 222 94 12 6 
Clusters which set 1 fruit..........:.0% 9 “r 68 31 
Clusters which, set: 2 fruits. vs... saws s 0 0 79 386 
Clusters which set 3 fruits............. 3 1% 41 19 
Clusters. which set 4) frnits in 655i. ten a: % 17 T% 
Clusters: which set 5 fruits... .....+.s04:¢ 0 0 1 iy 
Average number of fruits per 100 clus- 
ters on June 4....20-.25 Wise esis 9 : 180 
Apple trees sprayed but once while in bloom.—tIn the tests which 
have just been considered an effort was made to hit with the 
spray each blossom soon after it opened. For this reason the 
treatments were given at intervals of from one to two days dur- 
ing the entire blooming season. Tests were also made in four 
other apple orchards in which the treated trees were sprayed 
but once while in bloom. General observation in these orchards 
confirmed the conclusion that spraying the open blossoms often 
prevents their further development. Particular observations 
were made on two varieties which had been sprayed once in 
bloom. These were Pumpkin Sweet, commonly called Pound 
Sweet, and Baldwin located in the orchard of J. B. Collamer & 
Son, Hilton, N. Y. These observations were taken in the way 
already described for McIntosh, p. 388. It is interesting to com- 
pare the results, as given below, with those obtained with trees 
which were sprayed repeatedly during the blooming season. 
Obseryations made June 5 on branches of a Baldwin tree 
which was sprayed in full bloom on May 23, and of a corre- 
sponding Baldwin tree which was not given this treatment show 
results for typical branches given in the table below, 
