Feb., 1925] PROGRESS OF AGRICULTURAL EXPERIMENTS 



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small to be significant; the 2-2-50 Bordeaux mixture used had been found in a 

 previous experiment to give satisfactory control when compared with 3-4-50 

 Bordeaux mixture and to be somewhat less injurious to the apple, hence its use 

 in the present experiments. The fungicides used were applied by means of a 

 spray gun under a pressure of approximately 200 pounds per square inch. 



It is generally considered that a spraying schedule for apple scab is usually 

 Bufficient to control sooty mould. 



Table III. — Effect of various methods of treatment on the control of sooty mould. 



1 Bm. =Bordeaux mixture. 



2 L. S. = Lime-sulphur solution. 



The figures given in the foregoing table substantiate the above opinion. 

 The data show that four sprayings with lime-sulphur do not give as satisfactory 

 control as even two sprayings with Bordeaux mixture. The most satisfactory 

 schedules were Bordeaux mixture pre-pink and calyx, lime-sulphur 14 days 

 after calyx; and Bordeaux mixture pre-pink and pink, lime-sulphur calyx. 

 The latter schedule is to be preferred to the former, because Bordeaux mixture 

 applied at the calyx russets the fruit and should, therefore, not be used except 

 under necessity. 



Apple Scab. 



Experiments on the control of apple scab were made by O. Butler on Baldwin 

 and Mcintosh apples. In the experiments on Baldwin the following results 

 were obtained: 



Table IV. — Effect of various methods of treatment on the control of apple scab. 



(Fungicide used.) 



