DISCUSSION. 



159 



Tablh 1. — Results of the use of Bordeaux alone and in combination with 

 lime-sulphur in russeting Ben Davis apples. 



The results from this table indicate plainly that it is the second 

 spraying that causes russeting. The lime-sulphur sprays do not russet 

 the fruit, the small per cent noted in the table is probably due to the 

 Bordeaux from adjacent plats. No serious leaf injury resulted from any 

 of the mixtures. In the Columbus orchard, 1910, the self-boiled lime- 

 sulphur plat seemed to have brighter foliage than either the Bordeaux 

 or Rex plats. No injurious effect has ever resulted from arsenate of 

 lead in combination with the lime-sulphur sprays. 



Now, as to the cost of making this home-boiled lime-sulphur as com- 

 pared with the commercial lime-sulphur. The man with a small orchard 

 can not profitably equip himself to make the home-boiled lime-sulphur. 

 With the man who has a large orchard it is a different question. There 

 are big cooking outfits for making this mixture that may be bought. I 

 know of only two firms that hantile them, The Farmers' Supply Company, 

 of Philadelphia, and Montgomery, Ward & Co., of Chicago. 



The cost of the lime and sulphur for preparing fifty gallons of this 

 concentrate is about $3. Added to this should be the cost of labor, 

 which would make a total of $3.50 as a conservative estimate for making 

 fifty gallons of home-boiler lime-sulphur. Fifty gallons when diluted will 

 make about 1,200 gallons of spray to be applied to the trees. My personal 

 opinion is that a man with only a few acres would not be justified in 

 going to the necessary trouble and expense of making home-boiled lime- 

 sulphur, for the difference in cost between it and the reliable commer- 

 cial brands. Under our conditions I had rather risk either Bordeaux or 

 commercial lime-sulphur to control apple scab than "self-boiled." 



DISCUSSION. 

 Chairman: It would seem that not very many people are interested in 

 spraying from the size of our audience this morning; I believe that 

 spraying should be the rule rather than the exception. In talking with 

 the average orchardist and farmer who has a little home orchard, the 

 difficulty seems to be that he thinks it is so hard to do; he thinks 



