20 



Professor Whetzell. That is out of my line. That is a bug 

 question, and I wouldn't offer you any opinion on it. 



Chairman Jenks. Can you tell us what is the general prac- 

 tice in New York, where they grow so many pears? 



Professor Whetzell. I never tell anything about bugs. I 

 can't forget my line. 



Chairman Jenks. The question is asked relative to dry 

 lime-sulfur, and its merits. 



Professor Whetzell. We have carried on no investigations 

 in the State of New York on the use of dry lime-sulfur. We 

 had one or two demonstrations carried out by the Farm Bureau, 

 and I think this is the general status at the present time in 

 connection with the dry lime-sulfur. I am quoting Professor 

 Parrott, who, while he is a bug man, has also launched into 

 some of the things from the other side. As far as fungous dis- 

 eases are concerned, if enough dry lime-sulfur is used in the 

 solution, it will be just as effective as the liquid, because it is 

 the same thing, but, as ordinarily sold and recommended, the 

 dilution is too weak. I believe Professor Parrott said to our 

 men last year that 23 to 25 pounds per 50 gallons should be 

 used to give the same result you would get with 1 to S, of com- 

 mercial lime-sulfur liquid, or something of that sort, for scale. 

 Then you diluted accordingly to get 1 to 40. 



A Member. Professor, do you expect that dusting would be 

 as effective as spraying in a season when there is much wind? 

 I mean particularly after the spray has been applied. Say you 

 get up in the morning and get the dust on before the wind 

 came. Would it be possible, if the leaves were dry, that the 

 dust would be blown off? 



Professor Whetzell. I will answer you by an experience of 

 your own. You drive a car? Yes? You wash it sometimes? 

 No? Never wash it? Well, I can't help you. Well, you have 

 seen fellows wash their car. Yes, nice and clean and shiny. 

 Then they drive it through a dusty road, and then they come 

 in and turn the hose on and soak it with water to wash it off, 

 but the dust was still there when they got done. They had to 

 take a rag and wipe it off. If you can't wash it off with a hose, 

 it isn't likely any wind that blows in New England would blow 

 it off. It doesn't blow off. The finely ground sulfur sticks 



