TWENTIETH ANNUAE MEETING. yy 



sure, and the economy of spraying under high pressure, and 

 the higher the pressure you get the finer spray you get. and I 

 beheve that is coming. Wc are over-spraying, we don't make 

 it fine. Wq. get it on and it drips and drops and nms oti'. We 

 want tlie high pressure, so fine that it will flow on the tree 

 like a fog, and you get more econoni}- under high pressure, 

 200 pounds pressure, 250 or 400. Hence, economy, and I 

 believe, efficiency come under high pressure spraying and 

 make it effective and in fact a fog that will flow on the tree. 



Mr. Frost: I think we used as high as 250 pounds 

 pressure in an orchard with a 12 horsepower gasoline engine, 

 and we couldn't see any difference in the result between 

 spraying at that pressure and hand power, '\losi all of it 

 seemed to be pretty nearly perfect. 



Prof. Gulley : That matter was developed last week 

 at Rochester, and Mr. Van Alstyne said decidedly there was 

 no gain whatever, by this tremendous pressure, that 100 to 

 125 pounds was just as good as double, and I don't believe 

 a man^in this state uses 150 pounds that will be satisfied with 

 it; 100 or 125 is perfectly satisfactory. I find a pressure 

 not to exceed 125 has done just as good work as any thing- 

 higher. 



Mr. Lupton : I can agree fully with Mr. Gulley I 

 think a good many of us are over zealous about high pres- 

 sure. I have been using 80 to 100 pounds with satisfactory 

 results, and I don't quite follow the gentleman that more than 

 150 is necessary, and that more spraying can be done, etc., 

 and economy of time. It is not a question about get- 

 ting spraying done in that way. You have got to cover the 

 tree, and just the moment you cover tlie underside of the 

 tree it is done, whether with low pressure or high pressure. 



If you stand two or three rows away on the windward 

 side you get the fine covering with the spray at once. I havi. 

 had that experience, and again when you are trying to spray 

 against the wind, as we sometimes have to do. why it is ab- 

 solutely impossible to put that fine spray on a tree even 5 or 



