STATE POMOLOGICAL SOCIETY. 73 



should be put on in order to get the best results, 'and what com- 

 bination of sprays will give us the best fruit. 



To begin with, we found that a number of fruit growers are 

 not getting profitable results in connection with their spraying 

 operations. They were spraying thoroughly, apparently, and yet 

 their fruit was not of the quality that we would like. A great 

 number of growers said that we could not possibly expect to get 

 clean fruit with the use of lime-sulphur. They had been able to 

 get clean fruit with the use of Bordeaux, but they had burning 

 of foliage and rusting of the fruit so that they were not satisfied 

 with the use of Bordeaux for the control of scab. And yet, when 

 they used Hme-sulphur they did not get the results they antici- 

 pated. 



Our first experimental work then consisted in determining 

 whether lime-sulphur would control scab equally as well as 

 Bordeaux. And we have found from our experiments carried 

 over two years, at least, that these two materials have equal 

 value as fungicides. As a summary of our experiments, we 

 find the following : 



For 191 3 % Scab. 



Bordeaux ' 7.2 



Lime-sulphur 5.37 



No spray 59.6 



Gravenstein Spy G. Russet 



For 1914. % Scab. % Scab. % Scab. 



Bordeaux 3-3-40 0.09 1.34 .16 



Bordeaux 4-4-40 o .32 o 



Lime-sulphur 1.008 .63 o .5 



No Spray 18.47 3<^/7 5—8 



Bordeaux made up of 3 lbs. lime, 3 lbs. copper sulphate, with 

 water to make 40 gallons of mixture ; also 4 lbs. lime, 4 lbs. 

 copper sulphate with water to make 40 gallons of mixture, were 

 compared with the usual strength of lime-sulphur, 1.008. spe- 

 cific gravity, or i gallon commercial concentrate to 34 gallons 

 of water. Two pounds arsenate of lead to 40 gallons was added 

 to each of the above mixtures. The application was made on all 

 the plots on the same date. Two applications were made before 

 the blossoms opened and two after. Gravenstein, King, Ribston 

 and Ben Davis were included in the 1913 test. 



