DIVISIOX OF HORTICULTURE 



753 



SESSIONAL PAPER No. 16 



is due to tlie arsenate of lead wlien combined with soluble sulpbur. It will be noticed 

 also that the control of scab was not nearly so ^ood on the plots where no arsenate 

 of lead was used, which may be due to the soluble sulphur arsenate being more adhe- 

 sive than soluble sulphur spray. 



Spray used. 



Per Per cent 

 cent. Foliage 

 Scab. Injury. 



Soluble Sulphur U pounds to 100 gallons no arsenate > 74-.9 0- 



2\ " " 100 " " " 81-3 slight. 



" " li " " 100 " 5 pounds arsenate of lead 42 • 55- 



2| " "100 " 5 " " " " 36-7 30-6 



No Spray. . ., 87-4 



LIME-SULPHUR WITH AND WITHOUT ARSENATE OF LEAD. 



Tests were made at Bridgetown and Berwick to test out the value of arsenate of 

 lead when added to lime-sulphur as compared with lime-sulphur without arsenate for 

 acab control. The results would seem to show that arsenate of lead does not materi- 

 ally increase the fungicidal value of lime-sulphur. Arsenate of lead, however, has 

 some fungicidal value when used alone, but the low per cent of scab on the Baldwin 

 Mock at Bridgetown where arsenate of lead was used alone cannot be entirely due to 

 the arsenate, although we cannot otherwise account for the difference. 



Lime Sulphur 



a it 



No Lime sulphur. 

 No spray 



Lime Sulphur. 



No Lime Sulphur. 

 No Spray 



Lime Sulphur 



it it 



No Spray 



Lime Sulphur 



No Lime Sulphur. 

 No Spray 



King Apples at Bridgetown. 



1-008, Grasselli arsenate paste 5 pounds to 100 gallons. 



1 • 008, no arsenate 



Grasselli arsenate paste 5 pounds to 100 gallons 



Baldwin at Bridgetown. 



1-008, Grasselli arsenate paste 5 pounds to 100 gallons. 



1-008, no arsenate 



Grasselli arsenate paste 5 pounds to 100 gallons 



Baldwin at Berwick. 



lOOS, Swifts arsenate paste 5 pounds to 100 gallons. 

 1 -008, no arsenate 



Ben Davis at Berwick. 



1008, Swifts arsenate paste 5 pounds to 100 gallons. 



1 -008, no arsenate 



Swifts arsenate paste 5 pounds to 100 gallons 



Per cent. 

 Scab. 



3-9 



9-48 



21-35 



72-86 



1-94 



2-04 



1-34 



90 01 



2-8 



1-5 



78-0 



4-5 



7-9 



51-3 



75-3 



BOR-DEAUX MIXTURE VERSUS LIME-SULPHUR. 



Experiments were conducted at Berwick with Bordeaux and lime-sulphur as a 

 spray for the control of scab. The plots were sprayed under similar conditions and 

 were^ uniform. The results obtained were similar to those of previous years, and show 

 that Bordeaux is equally as effective in scab control as lime-sulphur, but that the 

 rus^^eting reduces materially the quantity of No. 1 and No. 2 fruit, as shown in the 

 packed out results, making Bordeaux quite unsatisfactory other than for scab control. 



Ke.\tv:lle. 



