FIRE BLIGHT OF PEARS, APPLES, QUINCES, ETC. 



This bulletin has been prepared to meet the constant and increasing 

 demand from growers for information on this most common and destruc- 

 tive bacterial disease of fruit trees. There is nowhere brought together 

 in available form a concise statement of our present knowledge of 

 this malady. The writers have sought to present as clearly as they 

 can the main facts in regard to the history, symptoms, cause and 

 control of this disease. The data here presented have been derived 

 from the recorded investigations of other workers and from our own 

 observations and experiments extending over a period of several years. 

 It is not our purpose to present the details of our experiments. We 

 shall give briefly those results and conclusions that appear to be of 

 immediate and direct value to the grower. We have in preparation 

 a full and comprehensive monograph of this disease to be presented 

 when experiments and researches now under way have sufficiently 

 progressed to warrant their presentation to the public. The junior 

 writer is devoting his entire time and attention to a careful study of 

 this disease, particularly in relation to its occurrence and control in 

 nursery stock. This work is being conducted co-operatively with the 

 growers under an Industrial Fellowship established by C. W. Stuart 

 and Co., Nurserymen, Newark, N. Y. During the season of 1909, co- 

 operative experiments were conducted in a field laboratory on a fruit 

 farm near Oswego, N. Y. This investigation was also largely supported 

 by the grower, Mr. Ira Pease, who placed this orchard under our super- 

 vision and provided salary and traveling expenses for Mr. E. W. Mitchell, 

 who had direct charge of the work. We shall be glad to consider co- 

 operative experiments with other growers who may so desire. Cor- 

 respondence in regard to this matter is especially invited. Address, 

 Prof. H. H. Whetzel, Plant Pathologist, College of Agriculture, 

 Ithaca, N. Y. 



LITERATURE 



The following list of publications docs not include, by any means, 

 all that has been written on this subject, but we believe does contain 

 the main facts of the history, cause and control as represented by 

 previous investigation. The publications have been arranged in 

 chronological order. Many of them are not now available except in 

 libraries. 



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