New York Agricultural Experiment Station, 380 

 Table IX. — Fktjix-Setting on Typical Beanches of McIntosh. 



Sprayed jj ^ sprayed 

 repeatedly in j^ tloom. 

 bloom. 



No Per ct. No. Per ct.. 



Whole number of clusters examined 132 143 



Clusters which set no fruit 108 82 2 1 



Clusters which set 1 fruit 18 14 37 2G 



Clusters which set 2 fruits 6 4 47 3a 



Clusters which set 3 fruits 44 31 



Clusters which set 4 fruits 11 8 



Clusters which set 5 fruits 2 1 



Average number of fruits per 100 clusters on June 2. . 23 221 



It was intended that the yield of ripe fruit from branches 

 sprayed in bloom should be compared with that from the cor- 

 responding branches which were not so treated. Towards the 

 close of the season there was but very little fruit on the 

 branches which were sprayed in bloom while on the other 

 branches there remained a fairly good crop of fruit. The severe 

 wind storm of September 11 and 12 blew off nearly all of the 

 fruit and the windfalls of one side of the tree could not be 

 separated from those of the other side so that the final record 

 of the yield could not be taken. 



An apple tree of Keinette de Caux which had been top- 

 worked to this variety eighteen years ago was treated accord- 

 ing to the plan stated above. Its height was about the same 

 as that of the Mcintosh tree. Its blossom buds were extremely 

 abundant and uniformly distributed. One-half of the tree was 

 sprayed in bloom on the dates given below. The opposite side 

 was left unsprayed during the blooming season. 



Reinette de Caux Sprated Repeatedly While in Bloom. 



Date of 

 Treatment. Condition of Bloom. 



May 15.... First blossoms opening. 



( Some clusters have from one-third to one-half of their 

 May 16.... <( blossoms open. About 40 per ct. of all blossoms are 



I now^ onpD. 



May 17 \ Probably from 60 per ct. to 75 per ct. of blossoms are 



( now open. 



c Tree is practically in full bloom. The petals of the firs4 

 May 19 ^blossoms to open are not yet falling. 



