July, 1912.] FUNGICIDES IN THE APPLE ORCHARD. 



14 and at the time of gathering. The apples were picked between 

 September 10 and September 15. The following results are based 

 on the picked fruit and the drops at the time of gathering and were 

 obtained by actual count. The badly scabbed apples were those so 

 seriously damaged by the disease as to be unmarketable. 



LADD ORCHARD. 



SMITH ORCHARD. 



Plot. 



Fungicide. 



12 L-S, 9-6-50, unboiled 



13 Bordeaux, Standard 



14 Bordeaux, 3-3-50 ... . 



15 j Bordeaux, French . . 



16 Bordeaux 



17 iNone 



Per Cent. 



Free From 



Scab. 



43.8 

 55.6 

 75.8 

 77.4 



11.7 



The relative position of the plots in the orchards is indicated by 

 their numbers. The large per cent, of scab on plots 2, 3 and 13 was 

 probably partly due to the spread of the disease from adjacent plots. 

 The third spraying apparently had but little effect upon the amount 

 of scab. The weather following this application was quite dry and 

 it is not surprising that there was but little spread of the disease at 

 that time. 



The Bordeauxs seem to have been the most efficient in controlling 

 scab with the commercial lime-sulfurs a close second. The self- 

 boiled and the unboiled lime-sulfur mixtures were quite inefficient 

 and the results would indicate that neither sulfur nor lime, as such, 



