102 



We have not made any experiments with sulphate of zinc. 

 We have a number of growers who have been using the 

 Black Leaf 40 and lime-sulfur combination with a great deal 

 of satisfaction. 



MR. IVES. And arsenate of lead combined? 



DR FELT. Yes. 



MR. IVES. Well, there are Station Reports that show 

 injury where they used either arsenate of lead or combined 

 it with Bordeaux mixture. 



DR. FELT. I was at the New York State Fruit Grow- 

 ers' meeting the week before last, and there the statement 

 was repeatedly made that this tobacco preparation could be 

 used on apple with the lime-sulfur wash and also with the 

 arsenate of lead. 



MR. IVES. But under New York conditions. 



DR, FELT. Yes. Of course, there may be a difference 

 in the conditions between here and over in the Hudson Val- 

 ley, but I would not expect anything very marked. I am 

 willing to admit that these combinations are new and per- 

 haps present some new features. A heavy spraying with a 

 lime-sulfur wash, at summer strength, to which poison is 

 added may of itself produce hurning. The spraying must 

 be carefully done and pains taken to secure good distribu- 

 tion. Here is one question: Was this a lime-sulfur, or a 

 sodium sulphide ? 



MR. IVES. I don't know that I have anything in re- 

 gard to lime-sulfur combination, but I am speaking more of 

 the arsenate of lead and copper as a compound. 



Dr. FELT. I can 't answer that quite so definitely as in 

 relation to lime-sulfur. 



PROFESSOR BROOKS. I want to say only that at the 

 Experiment Station last summer we combined Black Leaf 40 

 with Pyrox, "wdth extremely_satisfaetory results. We had a 

 great deal of trouble with red bug for one or two years, and 

 we had very nearly perfect fruit last season, almost wholly 

 free from red bug. This combination spray was made just 

 after the petals fell. 



MR. STAPLES. What protection would you suggest 

 for browntail moth? They have been troubling us in our 

 vicinity for several years. They come on in May or about 

 the first of June, and strip the trees. 



