Summer Meet ins:. 103 



"ij 



done under the proper conditions, at the proper time, why, I have no 

 doubt but that it would do as well as the liquid spray. But it is differ- 

 ent with the fungus than with the insect. The conditions of the leaf 

 must be just right. 



Question : Do you think you could use the dust spray on an or- 

 chard that had not been effected and use it year after year and thus 

 prevent the disease? 



Prof. Von Schrenk. — ^Well, I don't know; I doubt it. 



]\Ir. Erwin. — Is there as much danger of injuring the fruit with the 

 dust as with the liquid? 



Secretary Goodman. — Xo, sir ; no, not as much. It is not as effective 

 and yet I believe that there is enough value in it to use it. Last year we 

 (lusted 40 acres ; seven men did the work. Dusted the 40 acres ; some of 

 it twice and some three times. I used Paris green. I believe I used i 

 pound of Paris green, i pound of "Bordeaux mixture and 10 pounds of 

 lime and used this thoroughly. Four men dusted 40 acres in 4 hours. 

 1 believe it was profitable. We have 2,000 acres in orchard and we must 

 do something to prevent these insects and diseases. I have said but 

 very little yet, because I do not know the results. I asked Prof. Whitten 

 and Prof. Stedman about it and they^ answered about as they did today. 

 I would rather dust my trees three times than to spray them once. The 

 dust will go up and form a cloud, as it were, and then settle down and 

 almost form a covering to the tree. Furthermore, I believe that lime is 

 one of the best insecticides that we have. I believe that lime is good for 

 fungus and that lime and Bordeaux mixture is good for the leaf curl. 

 It is best to dust in the evening and* morning. We used to begin at 7 

 and dust as long as we could see. 

 Air. Hazeltine — The Trap Lantern in the Orchard: 



Ladies and Gentlemen — Xow, I want to state in beginning that I do 

 not claim that this machine will catch everything. I do not say that spray- 

 ing is useless in some instances. You do have to spray for some things ; 

 the Canker Worm is one. Spraying is the only way for that, that you 

 can't catch them with this machine, but you can catch the moths. I do 

 want to say this : I have grown orchards myself for 20 years. Prof. Sted- 

 man says that I can't catch a body or Flat-headed Borer. I do not claim 

 that at all, but the body borer is not an orchard pest with us. Now, I want 

 to say something about the root borer, the round headed borer. Mr. Har- 

 rington tried the moth catcher, and he first said he was catching these 

 striped insects that make tree borer or root borers. He was catching 

 them in his traps. I looked through mine and found scarcely none at 

 all. I had about 40 traps set in my orchard, and through them all found 

 two. Prof. Chittenden, Assistant U. S. Entomologist, the highest au- 



