New York Agricultural Experiment Station. 399 



prospects were slight that the remainder of the floating insects 

 would be driven to the land, spraying and burning operations were 

 undertaken. The burning torch-spray was used with great advantage 

 on the grasses and weeds, while the oil applied as a spray proved 

 a most efficient treatment for the insects floating on the water. 

 (Plates XV and XVI.) Besides spraying the surface of the water 

 within reach of the shore line, applications of oil were made to cover 

 floating insects and debris of all sorts which passed through a flume as 

 the water was drawn off. (Plate XVI.) In these spraying operations 

 65 gallons of kerosene were used, while two men were employed for 

 a half day, making a total cost of eight dollars for this operation. 

 Results on insects and plants. — An examination of this bog on 

 August 9 showed no trace whatever of the bugs on the flooded sec- 

 tion. It should be noted, however, in the flooding of an upper 

 section some insects may find their way to a lov/er section, probably 

 by jumping over the intervening dam, and in this experiment a 

 few individuals managed to escape by such means. The submersion 

 of the vines did not produce any scalding of the fruit. 



TESTS WITH VARIOUS INSECTICIDES, 1913. 



As Bog No. 2 was flooded very late in the season of 1912, a close 

 watch was kept during the following summer to determine if the 

 insects would appear in injurious numbers. In July there were 

 indications that the bugs were very plentiful and that they might do 

 considerable damage by the time flooding could be safely attempted, 

 with assurance of satisfactory results. It therefore appeared 

 desirable to postpone the turning on of the water, and in the mean- 

 time to resort to other methods to keep the insects under control, 

 until all of their eggs were hatched. Spraying with contact insec- 

 ticides seemed to be the most promising procedure, and, moreover, 

 tests along this line were desirable, since it was important to know 

 if spraying would be, in any way, of more advantage than flooding, 

 and, if so, what substances were best adapted for the treatment of 

 cranberries. There are some bogs which are known as " dry " bogs 

 where flooding is impracticable, and in the case of such a pest as 

 the cranberry toad-bug spraying would probably have to be relied 

 on as the chief means of defence. To this end the following tests 

 were made. 



Bog No. 1 . — On July 4, Mr. Brown tested spraying with resin- 



