STATE POMOLOGICAL SOCIETY. 53 



in 1914 led to fully as much foliage injury and fruit russeting 

 as where Bordeaux mixture was used. The effects were very 

 disastrous, indeed. 



Proprietary compounds. It is not the policy of the Station to 

 attempt to test indiscriminately the various proprietary com- 

 pounds which are placed on the market from time to time for 

 orchard spraying. However, for special reasons two of these 

 have been included in recent experiments. 



One was a dry powder much advertised and sold in the 



state as a substitute for lime-sulphur. The manufacturers did 



not claim this in their advertising matter, but many orchardists 



purchased and used the material under the supposition that it 



was identical with lime-sulphur, except that all of the water 



had been removed. The first year at Highmoor two pounds of 



the powder and one pound of dry arsenate of lead were used 



in 50 gallons of water. Efficient scab control was secured, 



but the effects on the foliage were disastrous. The experiment 



was repeated the second year but the amount of the fungicide 



was reduced to three-fourths pound to 50 gallons. The results 



were practically the same as before. No attempt was made to 



test the efficiency of the material as a dormant spray. 



The other material was in the form of a paste. Seven pounds 

 of this and the same amount of water and arsenate of lead 

 were used as in the last mentioned experiments. Both seasons 

 this compound controlled scab very well and no injury to 

 fruit or foliage was experienced. 



Conclusion. 



A brief summary or restatement of the essential facts which 

 have been presented may be of service. 



Locally it is not always safe to generalize too much upon 

 results secured in or to adopt without reserve conclusions 

 derived from work done in other parts of the country or abroad 

 under different climatic and soil conditions. Also, in some 

 instances these conclusions have been based upon a relatively 

 small number of trees, the results of a single season, or at the 

 outside limited number of seasons. At Highmoor, the Ben 

 Davis, a variety which scabs readily and is quite susceptible to 

 spray injury, is used. A relatively large number of trees are 



