New York Agricultural Experiment Station. 27 



ments with the Bordeaux mixture by which plum leaf spot in 

 bearing orchards may be practically controlled. The experi- 

 ments have been in progress for two years, during which period 

 693 trees in all have been under treatment. They have been con- 

 ducted on a scale suflSciently extensive to insure reliable results, 

 and a definite course of treatment based on this work is now 

 confidently recommended. In the course of these experiments 

 a marked increase in the yield of the sprayed trees has been re- 

 corded. One of the varieties which was treated, the Italian 

 Prune, yielded forty-five per cent more marketable fruit where 

 sprayed than where not sprayed. The fruit also ripened later on 

 the sprayed trees, which, in this case, resulted in securing better 

 market prices. 



(6) Cherry leaf spot. — Experiments with cherry leaf spot similar 

 to those conducted with plum leaf spot have not given suflticiently 

 marked results to permit of recommending a line of treatment 

 for this disease in bearing orchards. During a considerable 

 portion of the time when the treatment should be given, the use 

 of Bordeaux mixture is objectionable because it sticks to the 

 fruit till it is ripe and so injures its market value. 



(c) Apple scab. — Some of our prominent fruit-growers have ad- 

 vocated the idea that liberal applications of wood ashes to apple 

 orchards increases the healthfulness of the foliage and enables 

 the leaves and fruit to better resist the attack of the scab fungus. 

 One of the Station orchards has for four years been devoted to 

 an investigation of this question. 



A comparison of different hind of spraying apparatus. — The im- 

 provements in the apparatus designed for spraying orchards, 

 vineyards and field crops have been progressing very rapidly in 

 recent years. Two years ago a report on the various kinds of 

 spraying devices was issued by this Station. Since that time 

 Mr. Paddock has given special attention to this subject and has 

 prepared for this report an account of recent modifications of 

 spraying apparatus. 



A report of the ivinter injury which was sustained in 1895-6 by 

 the varieties of fruit which are grown in this state. — Not since the 



