750 



EXPERIMENTAL FARMF 



7 GEORGE V, A. 1917 



Barium Chloride to L^sen Foliage Injury. 

 Summary. 



Per cent of 

 foliage injury. 



Berwick. 



12 

 55 



Bridge- 

 town. 



Ij pounds Soluble sulphur, 5 pounds Arsenate of lead and half pound Ba- 

 rium chloride 



1| pounds Soluble sulphur, 5 pounds Arsenate of lead and no Barium chloride 



2 pounds Soluble sulphur, 5 pounds Arsenate of lead and 5 pound Barium chloride.. . . 



2 pounds Soluble sulphur, 5 pounds Arsenate of lea 1 and no Barium chloride 



21 pounds Soluble sulphur, 5 pounds Arsenate of lead and half pound Barium chloride 

 2 J pounds Soluble sulphur, 5 pounds Arsenate and no Barium chlcride 



21-8 



Falmou- 

 moutli. 



29-3 



35- 



40- 



45- 



39-7 



40-3 



Soluble sulphur Arsenate and Barium chloride at Different strengths for scab Control. 

 " Summary. 



FOLIAGE INJURY FROM THE SOLUBLE SULPHUR SPRAYS. 



In order to find out when the most injury to foliage is likely to take place a close 

 record was kept of the injury resulting from the different sprays. The following table 

 gives the average of twenty experiments conducted at Berwick. It will be seen that 

 the injury to the Gravenstein was about the same from the first, third and fourth spray, 

 and on the King block the greatest injury was done by the first spray. The second 

 spray gave very little injury. 



A study of meteorological observations would go to show that the greatest injury 

 took place when rainy weather occurred on the days following the application and that 

 when bright days followed the application as was the case for the week following the 

 spray put on May 31, no injury resulted. 



/ 



Time of Foliage Injury. 



Average per cent of Injury. 

 1st. 2nd. 3rd. 4th. 



_ Spray. Spray. iSpray. Spray. 



Gravenstein at Berwick .. 9-06 0'5 9"2 T'lo 



Tompkins King at Berwick 23'1 O'O 6*4 0*0 



SOLUBLE SULPHUR ARSENATE AND BARIUM CHLOKIDE VERSUS LIME-SULPHUR-ARSENATE FOR 



SCAB CONTROL. 



A sei'ies of tests was conducted with soluble siilphur 1\ pounds, arsenate of lead, 

 5 poundr and Barium chloride A pound to 100 gallons as compared with the regular 

 lime-sulphur-arseuate of 1-008 sp. gr. or 1 gallon of Grasselli concentrate lime-sulphur 



Kfntville. 



