AprH, '15] 



SAFRO: NICOTINE SULPHATE-BORDEAUX 



199 



Mr. W. M. Scott: The material used in my experiments ran from 

 a trace of soluble arsenic up to one-half of one per cent. It was uni- 

 formly lower in soluble arsenic than arsenate of lead. 



President H. T. Fernald: The last paper on the program will 

 be read by Mr. H. A. Surface. 



FRAUDS, SEMI-FRAUDS AND QUESTIONABLES 



By H. A, SuEFACE, Harrishurg , Pa. 

 (Withdraivn for 'publication elsewhere) 



President H. T. Fernald : If there is no discussion, we will now 

 adjourn. 



Adjournment. 6.00 p. m. 



Afternoon Session, Wednesday, December 30, 1914; 2.00 p. m. 



President H. T. Fernald: The first paper on the program will 

 be read by V. 1. Safro. 



THE NICOTINE SULPHATE-BORDEAUX COMBINATION 



By V. I. Safro, Louisville, Kentucky 



A considerable item of expense in spraying operations is the cost of 

 application. Growers will frequently hesitate to spray, not on ac- 

 count of the cost of the material, but because of the necessity of an 

 additional application. ''Fewer applications/' is the demand of the 

 grower today in his spraying practice. In choosing one of several 

 materials for spraying, the answer to the question, " Can it be used in 

 combination with other sprays?" will often determine the cheapest 

 spray, and not the cost of the material per gallon. A spray may cost 

 more per gallon but be cheaper in that it does not require a separate 

 application. 



In attempting to ascertain the status, last spring, of the advisa- 

 bility of combining Nicotine Sulphate with , Bordeaux, we found that 

 there was no consensus of opinion in the matter; in most cases, in 

 fact, the attitude was taken that the combination should not be used 

 on account of possible injury to foliage. This attitude was conserva- 

 tive and proper in that new combinations should not be recommended 

 as long as reasonable doubts exist as to their effectiveness. 



