105 



I don't know much about the use of soluble sulfur. It 

 is nice stuff to handle and you don't have to pay a lot of 

 freight, but I have used the combination of soluble sulfur 

 a,nd arsenate of lead and I damaged two or three orchards 

 very seriously. Whether it was a climatic condition or not, 

 I don't know. . Perhaps I used more of the arsenate of lead 

 than I should have, but I don't believe it is safe to combine 

 the two in my section of the state, from what I have ob- 

 served. I think it did more damage than it prevented. I 

 want to get rid of the scale, of course. I have followed the 

 teaching of the scientific men and the Docor and everybody 

 else, to the best of my ability, and still there is scale. Last 

 fall I made a heavy application of oil, and again in the 

 spring I dosed them heavily with the soluble sulfur. On some 

 trees there was no scale at all, and I don't know whether it 

 was the oil in the fall or the soluble sulfur in the spring. 



MR. STAPLES Is it safe to piit on 5 or 6 pounds of 

 arsenate of lead with water? 



MR. MANN. I think it would be safe to put on 20 as 

 far as injury to foliage is concerned. 



DR. FELT. If I understood the speaker correctly, it is 

 possible that he and perhaps somebody else has misappre- 

 hended my remarks. I have recommended, and still 

 recommend, the use of a fungicide with an insecticide, — 

 that is, either Bordeaux mixture or a lime-sulfur wash with 

 arsenate of lead, and over in New York State a great many 

 of our fruit growers are drifting into the use of a lime-sulfur 

 wash rather than Bordeaux mixture, and unless the appli- 

 cation is quite heavy, they get very good results. Here, 

 where you have browntail and gyps.y moths and use a larger 

 amount of arsenate of lead and presumably make a heavier 

 application, I would not be at all surprised if you should 

 have some foliage injury. 



Another thing I want to make clear is this : the gentle- 

 man asked in regard to soluble sulfur for the San Jose scale. 

 I gave you the data in regard to it in my paper. He refers 

 to serious injury following the combination of a soluble 

 sulfur and arsenate. We have had just that experience in 

 New York State, and at present consider the combination 

 unsafe. I saw trees last summer with three-fourths of the 

 leaves taken off, and the men who made the applications 



