141 



ualy. The dusting outfit consists of a hopper to hold about 

 100 pounds of material, a light centrifugal pump and a mo 

 tor. We use one of the gas engines from our spray rigs. 



MR. GILMORE As to the original cost— I understand 

 the the dust outfit is cheaper, is it not? 



MR. HACKETT: The machine itself, the duster, is 

 very much cheaper. You can use it with any gas engine of 

 suitable power. The cost of material for dusting is much 

 greater than for 'spraying. The economy of the system is 

 figured on the whole operation. 



A MEMBER: Did you try the dust on apples? 



MR. HACKETT: We did not. That has been done 

 thoroughly by the experiment stations, and there are offie- 

 cial bulletins available for anyone sufficiently interested to 

 send for them, 



A MEIMBER : What make of duster do you use ? 



MR. HACKETT : The Niagara. There are two makes. 

 The other one I know nothing about, 



]\IR, DOTEN: What is the minimum power required? 



]\m. HACKETT: That depends on the size of the dust- 

 ing machine. The size you buy would be guaged by the 

 acreage you have to cover in a given time. 



MR. DOTEN: I understand your results were from one 

 application of the dust, 



MR. HACKETT : Most of them. On one or two blocks 

 we made a second application. The grower should have 

 enough material on hand to make as many as three applica- 

 cations on the tender varieties, and whether he makes more 

 must depend on his judgment and the conditions, 



MR. VAN METER: As I understand it, the idea to 

 prevent the development of brown rot on peaches in transit 

 is to dust them thoroughly just a few days before picking. 

 Have you tried that? Does the dust show on the picked 

 fruit? 



MR. HACKETT : Occasionally you will see some dust 

 on the ripe fruit, as I stated in reply to a previous question. 

 Perhaps a brief statement of the whole dusting operation 



