l8 Mi?INE AGRICULTURAL EXPERIMENT STATION. I914. 



applies to the ordinary liquid lime-sulphur concentrate put out 

 by the Niagara Sprayer Company. So far as this Station has 

 tested the latter material it is fully equal to any on the market 

 with reference' to its effects on the foliage and efficiency in 

 scab control. 



Sixty-three replies to the circular letter were received, and 

 only II of the writers said they had used the material in ques- 

 tion in 19 1 3. Farther correspondence developed the fact that 

 one of these, who reported no burning of the foliage, did not 

 use Soluble Sulphur Compound at all but the lime-sulphur 

 concentrate put out by the same company. Another used 

 Soluble Sulphur Compound only as a dormant spray. A third 

 reported that his foliage looked sickly during the early part 

 of the season whether sprayed or not. 



One case was reported from Kent's Hill where the trees 

 were thoroughly sprayed with i 1-2 pounds of Soluble Sulphur 

 Compound and 2 pounds of arsenate of lead in 50 gallons of 

 water about 10 days after the petals fell and no injury resulted. 

 Another case was reported to the writer, but not included in the 

 replies to the circular letter, where the owner drenched the 

 trees with this spray without injury. In neither of these cases 

 were the names given of the varieties of apples sprayed, and in 

 the last it was not stated how much Soluble Sulphur Compound 

 was used and whether or not arsenate of lead was used with it. 



One case was reported where slight burning of 'the leaves 

 occurred with several varieties and four reports of severe 

 foliage injury were received. One of these came from the 

 same town where material was used success fully. The spraying 

 was done on about the same date, the same amount of Soluble 

 Sulphur Compound was used but 21-2 pounds instead oi 2 

 pounds of arsenate of lead was added to each 50 gallons of 

 spray. In this case the variety used was Baldwin and the 

 owner reported that "It burned the foliage so seriously that 

 much of it fell". Another report was as follows : "I will say, 

 however, that it was very unsatisfactory in our hands. It has 

 caused considerable injury and did not seem to be as effective 

 as the solution of lime and sulphur". The third reported injury 

 on Ben Davis but not on other varieties. 



