6o Department of Plant Pathology. 



ular elementary course, and that only on condition that they qualify as 

 to the perequisites, i. e., Botany i and 2. Additional floor space, equip- 

 ment, and maintenance funds should be provided to meet the needs of 

 these students. 



INVESTIGATION. 



Most satisfactory progress on our investigations has been made the 

 past year. None of these investigations has been entirely completed, 

 but in several lines sufficient data have accumulated to warrant the pub- 

 lication of results. Two bulletins have been prepared and published in 

 the past year : Bulletin 272 on the Fire Blight of Pears, Apples, Quinces, 

 etc., and Bulletin 276 on Peach Leaf Curl. Several other bulletins and 

 reports are now in preparation, some of which will be ready for the 

 printer this fall and winter. 



Lime-sulfur as a fungicide. — This work has been continued by Mr. 

 Errett Wallace, under the Industrial Fellowship established by the 

 Niagara Sprayer Company, of Middleport, N. Y. The field work has 

 been conducted the past season at our field laboratory in some orchards 

 near Sodus, N. Y. Over ninety experiments on apples, pears, and 

 peaches have been made. The results of the season confirm, in general, 

 the conclusions of last season and indicate that lime-sulfur as a summer 

 spray will largely replace bordeaux mixture for the control of many 

 fungous diseases, especially of apples and pears. 



Grape disease investigations. — This work, which is under the direction 

 of Dr. Reddick, Assistant Professor in the department, has been con- 

 tinued, as for the preceding year. Spraying experiments for black rot 

 were again conducted at our field laboratory at Romulus, N. Y. Because 

 of the relatively dry season little rot appeared and the results obtained 

 do not promise to be striking. The work at Fredonia, N. Y., in co- 

 operation with the State Experiment Station, has been chiefly on 

 necrosis and powdery mildew. 



A satisfactory method for controlling necrosis has been developed 

 and data are accumulating which indicate that the mildew may be con- 

 trolled by the proper application of spray. Numerous tests of the newer 

 fungicides and combination fungicides and insecticides have been made 

 and it is hoped that field tests another year will show that a fungicide for 

 mildew may be successfully combined with any of the insecticidal sprays 

 used for the various insect pests of the region. 



Bean disease investigations have been continued by Mr. M. F. Barrus 

 on the farms of the Burt Olney Canning Company at Oneida, N. Y. By 

 a series of inoculation experiments on a large number of varieties of 

 beans, Mr. Barrus has succeeded in finding several good varieties very 



