SPRUCE BUDWORM. 29 



As far as we know, little or no effort has been made to 

 check the injury caused by the spruce budworm by spraying, 

 although we see no reason why the insect may not be controlled 

 by the method employed in combating similar species upon other 

 trees. The time when the greatest amount of injury is being 

 done is in the late spring, about the first of June in the vicinity 

 of Orono. To prevent injury to the spruces therefore it will be 

 advisable to begin spraying operations soon after the young 

 shoots open and repeat within a week or ten days. Arsenate 

 of lead applied at the rate of five or six pounds per 100 gal- 

 lons of water is doubtless the simplest and most reliable remedy. 



The question is often asked, what will it cost to spray and 

 what will be the expense involved in the purchase of a suitable 

 equipment? As there are no figures available in regard to 

 spraying for the spruce budworm we must turn to other 

 sources for information. These given by Professor Herrick in 

 the Journal of Economic Entomology (Vol. 5 page i6g) upon 

 spraying for the elm leaf-beetle are recent and as the methods 

 used in combating this insect are similar to those which must 

 be employed against the spruce budworm we will quote di- 

 rectly from Professor Herrick's paper. The part that concerns 

 us reads as follows : 



"The first question that presented itself of course, was the matter of 

 apparatus. Our appropriation was not large and it, therefore, became 

 necessary to limit ourselves to reasonably inexpensive and tried outfits. 

 After much correspondence and several interviews with agents, we 

 decided to purchase a Hardie Power Sprayer with a triplex pump, 3 H. 

 P. engine, 200-gallon tank, 12-foot tower, two leads of hose, each too 

 feet long and two extension poles, one 20 feet long and the other 12 feet 

 in length, and a Friend Hilly-Orchard outfit with a 3 1-2 H. P. engine, 

 California model pump, 8 foot tower and other equipment' like the for- 

 mer outfit. With these outfits, and both gave eminent satisfaction, we 

 were able at all times to maintain 175 to 200 pounds (and over^ pres- 

 sure. One man remained on the tower and with his 20-foot extension 

 pole and Bordeaux Nozzle was able to reach the tops of the very high- 

 est trees. The man on the ground ran the engine, drove the team, and 

 sprayed the lower branches. The so-called foreman directed the work, 

 mixed the solutions, attended to breakdowns, climbed trees if necessary, 

 and kept things going in general. 



"The first spraying was made from May 16 to May 25, and the second 

 from June 12 to June 22. 



