i;]8 



them as soon as you can in order to get the best protection, 

 particularly with the white fleshed peaches. This is the first 

 application; others are made according to the judgment of 

 the individual grower. 



MR. FULLER: You wouldn't do much good in windy 

 weather, would you? 



MR. HACKETT : We had a very large area to cover, so 

 wind doesn't matter much with vis — we have to keep going in 

 order to get the work done. We don't spray or dust in the 

 rain, but in any other weather we try to keep on the job un- 

 til it is finished. 



A MEMBER: Does the dusting material show on the 

 fruit? 



MR. HACKETT: We had no more trouble from that 

 than we usually have with liquid spray. Sometimes things 

 will go wrong with the duster, as they do with spray rigs, 

 and if an open nozzle or the duster outlet is held still too 

 long, you may have a tree on which the fruit wil show the 

 spray or dusting material. If you are using arsenate of lead, 

 this may alarm you. as the grower naturally doesn't want to 

 poison the community. I have eaten half a dozen peaches at 

 a time on which the dust still showed when they were ripe, 

 with no bad effect whatever. 



MR. HUTCHINS : Mr. Hackett has given us a very in 

 teresting talk. I would like to offer that as a suggestion 

 this year Mr. Hackett should use a liquid spray on a block of 

 trees as a check on the results obtained by the dust process. 



MR. HACKETTT : It would be difficult to get compara- 

 tive tests as to results in the same block of trees, because the 

 dust permeates the trees so thoroughly that you could not 

 keep a single row, or several rows, free of it. We had checks 

 on our own farm as to the protection we secured last year by 

 dusting, but only with un dusted and un sprayed trees of the 

 same variety. If you mean comparative results as to speed 

 and cost, combined with the protection secured, we believe 

 that the dusting method for our large area gives us better 

 results than we could obtain with spray rigs, even if we had 



