ORCHARD SPRAYING EXPE;RIMi;NTS. 



65 



trees until a few days before picking time, when a quantity of 

 fruit dropped during a wind storm. The windfalls were pre- 

 vented from rolling by a deep cover crop, and no difficulty was 

 found in assigning the dropped fruit to its respective plot. 



Table 12. 



Plot 



Treatment. 



Density 

 Degrees 

 Beaum^. 



Number 



-of 

 Apples. 



Per 



cent. 



without 



scab. 



Per 



cent. 



Scabby.* 



Per 



cent. 



Deformed. 



Per 



cent. 



Calyx 



Injury. 



Per 



cent. 



Wormy. 



1 



2 



Check, Unsprayed 

 Niaga r a L i m e- 



34 

 34 

 31 

 33 

 82 

 40 



31 



3,102 

 7,736 

 5,040 

 7,765 

 9,563 

 7,699 

 3;660 



3,181 



6,551 

 7,185 

 5,215 

 6,092 



58.34 

 92.70 

 93.33 

 89.96 

 88.53 

 91.08 

 94.42 



84.59 



85.25 

 83.29 

 85.96 

 59.24 



41.65 

 7.29 

 6.66 

 10.03 

 11.46 

 8.91 

 5.57 



15.40 



14.74 

 16.70 

 14.03 

 40.75 



1.96 

 2.22 

 3.. 57 

 1.37 

 1.81 

 1.64 



1.75 

 1.07 

 0.06 

 3.21 

 0.61 



13.79 

 63 



3 

 4 

 5 



Bow k e r ', L i m e- 

 sulphur. 



Sterl i n g L i m e- 

 sulphur 



GrasselliCLime- 

 sulphur. 



1.54 

 0.81 

 0.53 



6 



Blanchard Lime- 

 sulphur.; 



Pratt "Sulfocide" 



Intensified Self- 

 boil e d L i m e- 

 sulphur 



Boiled Lime-sul- 

 phur 



1.02 



7 



44.39** 



0.16 



8 

 9 



2.13 



1.31 

 6.77 

 5.79 

 2.47 



1.03 

 0.09 



1.03 

 1.23 



10 

 11 



I. 



Bordeaux 4-4-50. . 

 Bordeaux 3-3-50. . 

 Check, Unsprayed 



1.51 

 1.97 

 7.33 



* On sprayed plots 50 peT cent, of respective amounts so slightly scabbed as to have 

 fair market value. 

 ** Deformity and calyx injury suflflciently coincident to combine in one count. 



Discussion of Re;sults. 



Examination of the above data shows a small balance of scab 

 control in favor of the lime-sulphur sprays as against bordeaux 

 mixture. The "Sulfocide" plot shows the highest degree of scab 

 control, but the points to be discussed later do not incline one 

 favorably towards its use, at least with arsenate of lead. 



In general the chief significance of the foregoing table is the 

 demonstration of the high fungicidal efficiency of the lime-sul- 

 phur sprays. The per cent variations are all within the range 



