614 Report of thk Entomologists of the 



Hence, we would recommend the raking and burning of the 

 leaves, in the infested raspberry fields, in the fall or early in 

 April. As an extra precaution the canes shonld be sprayed 

 about April 20 with a solution of whale-oil soap, or with kero- 

 sene emulsion. 



II. THE PEAR MIDGE. 



Diplosis pyrivora Riley. 



No evidence of the spread of the pear-midge to new localities in 

 this section (Second Judicial Department) was obtained the past 

 year. The midges were i>lentiful enough in some localities to 

 prevent the setting of any fruit on the Lawrence pears, and the 

 yield was small on the Bartletts. 



Results obtained from methods of treatment tested, make it 

 necessary to repeat part of the results given in the report for 

 1895. The tests have been carried on in three separate localities. 



During the spring of 1804 Mr. J. R. Cornell commenced the 

 work at Newburgh, N. Y., as did also Mr. S. B. Heusted at Blau- 

 velt, N. Y. 



Experiments at Nbwrurgh. 



Mr. Cornell has two orchards, which consist principally of 

 Lawrence pears. About April 10, 1894, Mr. Cornell sowed kainit 

 (a German potash salt, sold by the German Kali Company) in one 

 of his orchards at the rate of 2,000 pounds per acre. He also 

 cultivated this orchard. The older of the two orchards Avas not 

 cultivated or treated with kainit. 



At Newburgh, on April 19, 1895, traps made of cheese cloth 

 were placed under Lawrence trees which were known to have 

 been infested with the midge the previous year. One trap was 

 placed in the orchard which had been cultivated and fertilized 

 with kainit at the rate of 1,500 to 2,000 pounds per acre about 

 April 10,1894. Another trap was placed under a tree around which 

 kainit had been sown at a rate of over 2,000 pounds per acre a 

 few days (April 15) before the trap was set. A third trap was 

 set in the old uncultivated orchard where no kainit had been 

 applied. 



