New York Agricultural Expehimbnt Station. 399 



On May 24 the blossoms were well open and the trees in row 

 4 were then sprayed very thoroughly so as to hit as many of 

 the open blossoms as possible. Immediately after the blossoms 

 had fallen, May 31, the trees in Row 2 and 3 were sprayed on the 

 west side only and on June 6 they were sprayed on the east side 

 only. The weather conditions did not appear to favor the 

 development of the scab fungus and no spraying was done after 

 this. The treatment given to these Hubbardston trees for the 

 season may be thus stated. 



Rows 2 and 3 — sprayed just before blooming and just after 

 blooming. , 



Row 4 — sprayed just after coming into full bloom. 



Effect of the spray upon the open hlossoins. — Soon after the fruit 

 set a comparison of those trees which had been sprayed in bloom 

 with those not so sprayed showed very clearly that many blos- 

 soms had been killed by the spray. Although the bloom was so 

 abundant that the loss of these blossoms could not be expected 

 to make much difference in the yield of fruit yet at the close of 

 the season the record of the yield actually showed less fruit on 

 the average where the trees were sprayed in bloom than where 

 they were not. 



With the assistance of Mr. Bradley the following estimate of 

 the amount of bloom on each tree was made May 24. 



Row 2: Kot sprayed Row 3: Not spiayed Row 4: Sprayed In 



in bloom. in bloom. ■" blooai. 



No. 15 heavy. No. 15 heavy. No. 15 heavy. 

 No. 17 heavy. No. 16 medium. No. 36 medium. 

 No. 18 heavy. No. 18 heavy. ' No. IS heavy. 

 No. 19 heavy. No. 19 heavy. No. 19 heavy. 



No. 20 heavy. 



An idea of the climatic conditions during the spraying season 

 in Niagara County at Lake Road as compared with those in 

 Ontario County at Geneva may be obtained from the following 

 table. The observations for Niagara County were made free of 

 charge by Mr. H. A. Van Wagoner, to whom our thanks are due 

 for this favor. The table shows the average of three daily read- 

 ings of maximum and minimum thermometer, relative humidity, 



