ISTew Yokk Agkicultueai. Experiment Station. 185 



caused by Nectria but by a sterile fungus. It is wide spread and 

 destructive. The four-lined leaf-bug causes a currant leaf-spot 

 wbicb is confused with that due to fungi. An obscure dewberry 

 disease was observed. Gooseberry powdery mildew has been 

 troublesome in Ulster and Columbia counties. A gooseberry root 

 rot has been found at Marlboro. Grape black rot has done serious 

 damage in a few instances. Grape root rot due to DematopJiora 

 and grape black knot occurred in Orange Co. Winter injury to 

 fruit-buds caused heavy losses to peach growers. Peach leaf curl 

 has been conspicuous by its absence, but the yellows is common. 

 Pears have suffered from no disease. In former years black knot 

 ruined the plum orchards, but it has probably not spread much in 

 1899. Plum fruit-rot has been destructive. Quinces have been 

 affected considerably with fruit-spot and leaf-blight. The worst 

 disease affecting the raspberry this season is an obscure one which 

 may be caused by Phoma. Raspberry anthracnose was rare on 

 new canes, but abundant on fruiting canes. Strawberry leaf- 

 blight has been severe on some varieties. ISTone of the above dis- 

 eases were so destructive as in 1898. 



INTRODUCTION. 



Since its organization, in 1897, the Eastern New York Horti- 

 cultural Society has had a standing committee on plant diseases. 

 The membership of this committee is a follows: E. C. Stewart, 

 Geneva; E. A. Taber, Poughkeepsie; E. W. Barns, Middle 

 Hope; P. W. King, Athens; and L. E. Covert, Clintondale. 



The two published reports^ of the Committee are brief for two 

 reasons; namely, lack of data and lack of space for publication. 

 During the past season the committee has endeavored to do more 

 thorough work. A considerable amount of data has been gath- 

 ered, and to present it in as much detail as seems desirable would 



1 Fifty-Seventh Ann. Kept, of the N. Y. Agr. Soc., 1897: 735-738. 



