132 



PROP. FARLEY: The sooty mold fungus? 



QUESTION : Yes. 



PROP\ FARLEY : We use the same strength that we use 

 for the early spring spraying, that is, five quarts of the or- 

 dinary concentrated commercial lime-sulfur to 50 gallons ot 

 water. That is more dilute than some have been using con- 

 centrated lime-sulfur, but owing to the reports of serious 

 burning of the foliage we have deccreased the amount of 

 lime-sulfur to five (juarts to 50 gallons for all summer spray- 

 ing of apples. 



i\IR. C. K. SMITH : I would like to ask what your ex- 

 l)erience has been with the powdered and with the paste ar- 

 senate of lead. 



PROF. FARLEY : We have never made any strict com- 

 parison between the two ; that is, we have never compared 

 trees sprayed with the powdered arsenate of lead with simi- 

 lar trees sprayed with the paste form. In a general way 

 both forms of lead have been equally efficient. We have used 

 about half and half during the past two years, and have 

 been unable to distinguish any difference one way or an- 

 other. 



]\1R. S]\IITH : Have you tried the powdered form of 

 lime-sulfur or a substitute for lime-sulfur? 



PROF. FARLEY: You mean the soluble sulfur? 



I\IR.R SMITH: I guess that's it. 



PROF. FARLEY : We have not tested it at the Experi- 

 ment Stations. A number of our growers have used it as a 

 summer spray, with very unsatisfactory results. I believe 

 the New York State Experiment Station has conducted ex- 

 periments with soluble sulfur for at least two years. This 

 last report states that it has not not yet proven itself a good 

 substitute for the regular lime-sulfur mixtures. We are 

 still depending on the lime-sulfur mixtures believing that 

 they are more efficient, and in the case of the home made 

 preparations just as inexpensive. 



j\IR. SAGE : What do you use for controlling pear 



