APPLE SPRAYING EXPERIMENTS IN I914. 183 



On plot I, sprayed with bordeaux mixture and arsenate of 

 lead, no scab was recorded on either foliage or fruit previous to 

 harvest time. 



Plots 2 and 3, sprayed first with the strong fungicides and 

 arsenate of lead and later with double strength arsenate of lead 

 alone, showed a slight amount of scab on the foliage on June 

 30, and a similar record was made with reference to the fruit 

 on July 21, but there was very little increase throughout the 

 season. 



The records for plot 4, sprayed with standard dilution lime- 

 sulphur, plot 5, sprayed the same as plot 4 with the first appli- 

 cation omitted, and plot 6, sprayed with Soluble Sulphur, were 

 also nearly identical. A slight amount of scab was observed on 

 the fruit on July 14 and the same thing was noted for the leaves 

 on July 21, with no material increase as the season progressed. 



On plot 7, where the Atomic Sulphur was used, scab was 

 recorded as slight on the leaves on June 30, July 7 and 14 ; 

 quite common on July 21, and abundant on July 28. On this 

 plot it was first observed on the fruit to a slight extent on July 

 14 and did not increase materially during the season. 



No scab was, observed on either foliage or fruit on plot 8, 

 sprayed with the copper-lime-sulphur mixture, during the sea- 

 son. 



On plot 9 where the extra fine sulphur was applied the disease 

 was first noted on the leaves as sHght on June 30. Very little 

 increase was observed up till July 28 when scab was recorded 

 as plentiful, and also as occurring to some extent on the fruit. 



Where the stronger lime-sulphur was used on plot 10 no scab 

 was observed on the leaves till July 28 when a very slight 

 amount was noted. A little had been previously recorded on 

 the fruit on July 14. 



On plot II, sprayed with double strength arsenate of lead 

 alone, it was very evident throughout the season that scab was 

 more common on both leaves and fruit than on the plots sprayed 

 with the regular fungicides. It was also more common than 

 had been the case where the same treatment had been made in 

 previous years. However, it was also equally evident that it 

 was materially less than on the unsprayed check plot which 

 stood beside it, although it was first recorded on both of these 

 plots on the same date. 



