52 AGRICULTURE OF MAINE. 



conclusively that the scab fungus may live over winter on the 

 young twigs of susceptible varieties like the Mcintosh. Some 

 work done by one of the officers of this society, F. H. Morse 

 of Waterford, which came under our observation showed that 

 a late dormant spray of lime-sulphur in addition to the regular 

 summer applications would materially reduce the amount of 

 scab on the foliage under such conditions. 



No trouble has been experienced with scab on the limbs of 

 Ben Davis at Highmoor, but we have been asked frequently 

 if a dormant spray could be safely used after the leaf buds 

 had begun to unfold and the flower buds had begun to swell. 

 We have always advised against this, but a plot was sprayed 

 in this way at Highmoor last season to test the matter. 



As was expected, considerable burning of the young leaves 

 was experienced and some of the flower buds were injured, a 

 few being killed outright. These effects soon passed away and 

 so far as could be determined the total yield of apples on the 

 plot was not lessened. A considerable amount of russeting did 

 appear. It happened that this plot also adjoined one sprayed 

 throughout the season with Bordeaux mixture. Therefore, in 

 addition to the two central rows of trees used for the regular 

 record the two outside rows were harvested separately and the 

 percentages of russeted apples determined. It was found that 

 the row nearest the Bordeaux plot showed even a smaller 

 amount of russeting than the one farthest removed, thus 

 throwing considerable doubt on the hypothesis that the spray 

 from the Bordeaux plot influenced the results on the one where 

 the dormant spray was used. 



Extra fine sulphur flour as a fungicide for scab. For the 

 past two seasons ten pounds of very fine sulphur flour in sus- 

 pension in 50 gallons of water containing one pound of dry 

 arsenate of lead has been used on one plot in the series. This 

 material has shown considerable fungicidal value, but is prob- 

 ably not practicable for the commercial orchardist. 



Copper-lime-sulphur. Some successful experiments were 

 reported a short time ago by the pathologists of the Virginia 

 Agricultural Experiment Station with what they called "cop- 

 per-lime-sulphur." This was ordinary summer strength lime- 

 sulphur to which two pounds of copper sulphate was added for 

 each 50 gallons. A test of this material at Highmoor Farm 



