New York Agricultural Experiment Station. 



241 



copper sulphate solution falls below that of the nnsprajed rows; 

 while the rows that were sprayed with iron sulphate gave a little 

 larger yield than the check rows. 



EXPERIMENTS AT MANCHESTER. 



In the spring of 180G a letter was received at the Station from 

 Mr. Luther Rice, Manchester, N. Y., in which he made inquiries 

 about treatment for raspberry anthracnose. Mr. Rice is an ex- 

 tensive grower of raspberries, and at times has found anthrac- 

 nose to be a serious pest. On visiting his place it was found that 

 a small plantation of one variety, consisting of thirteen rows, 

 about twenty rods long, was badly diseased. . The plantation was 

 two years old, so it would seem that here were favorable condi- 

 tions for continuing the spraying experiments. 



Plan of the experiment. — From our previous experience we had- 

 come to doubt the advisability of giving the early spraying with 

 strong solutions. Therefore, in this experiment it was planned 

 to compare the early with the late treatment, at the same time 

 using the copper and iron solutions for the early treatment as 

 before. It became evident that spraying with sulphuric acid 

 solutions is too heroic a measure to be used on raspberries, there- 

 fore this line of treatment was dropi^ed. 



Table V. — Treatment Applied to Raspberries at Manchester for 



Prkvextiox of Axthhacxose. 



IG 



