Ixvi Department of Plant Patholqgy. 



Mr. Barrus has also demonstrated the casual relation of a species 

 of Rhizoctonia to a serious stem rot of beans, which results in the 

 breaking over of the stem near the ground about the time the pods 

 are well grown. 



(f) The fire blight problem still continues to be one of much 

 importance to the fruit growers of the State, and work on the 

 control of this disease was conducted in two field laboratories this 

 season. J\Ir. V". B. Stewart has been working on the control of 

 this disease in nursery stock. This work was made possible 

 through the financial cooperation of the C. V. Stewart Nursery Co., 

 of Newark, N. Y., in whose nursery near Seneca Castle the work 

 was done. Mr. Stewart demonstrated the possibihty of controlhng 

 this disease, which frequently plays havoc in nursery stock, by 

 systematic inspection and removal of affected shoots and trees to- 

 gether with disinfection of all cuts. At Oswego,, in the orchard 

 of Mr. Ira Pease, a field laboratory was established for the control 

 of this disease in large pear trees. Thirty acres of pears, largely 

 Bartlett, were placed at our disposal. These had blighted badly 

 last season. Mr. E. D. Mitchell was put in charge of the work, 

 which was financially supported largely by ]\Ir. Pease. The orchard 

 was carefully inspected and all the blighted wood removed and 

 cuts disinfected. Inspections were then made one to three times 

 a week throughout the season, and all blighted blossoms and 

 blighted shoots removed as soon as they appeared. The disease 

 was entirely controlled, the loss from the malady being in this way 

 reduced to a minimum. 



Several new lines of investigation were also begun and are now 

 well under way. 



(g) Peach and plum diseases. — Mr. C. N. Jensen, who had 

 charge of the routine- work in connection with the spraying for 

 Black Rot of grapes, has undertaken to work out the relation of 

 certain species of Va'lsa, found on dead and dying peach and plum 

 trees, to the so-called " Sun Scald " and Winter Injury of these 

 trees. It is hoped that this work may be continued in a field 

 laboratory in a peach-growing section of the State next season. 



(h) Lime-sulfur as a fungicide. — There has been an insistant 

 demand on the part of the fruit-growers of the State for informa- 

 tion on the possibility of using commercial lime-sulfur as a sub- 

 stitute for Bordeaux, jjarticularl}' for tlie control of Apijlc Scab, 

 Peach Leaf Curl and Brown Rot of the j^cach. Through the coop- 

 eration of Mr. L. B, Frear, a fruit-grower near Ithaca, we were 



