180 NEBRASKA STATE HORTICULTURAL SOCIETY. 



accustomed to the pear that they did not flourish very well when 

 noculated into the apple. 



Mr. Masters: Is it not possible that there are two bacteria? 



Prof. Heald: Not generally understood so. 



Question: Is there any known remedy that will prevent 

 this on plums? I would also like to ask the same about the 

 brown rot, which is so destructive. 



Prof. Heald: One way of dealing with this disease on plums, 

 apples, pears, etc. is to dig them up. That means lots of labor, 

 but it is recommended at the present time in the absence of 

 anything better. In addition to destroying the trees, spraying 

 has been used to some extent with fair success. 



Question: Spraying with what? 



Prof. Heald : The Bordeaux mixture has been used. 



A Member: We have used that and found it a partial success. 



Prof. Heald: You must be sure to destroy all diseased 

 fruits. 



The President: Dr. Bessey will now give a paper on "How 

 Much Plant Pathology Ought a Fruit Grower to Know. " 



HOW MUCH PLANT PATHOLOGY OUGHT A 

 FRUIT GROWER TO KNOW. 



BY DR. CHARLES E. BESSEY. 



In answering this question I propose to suggest what I con- 

 sider to be the minimum knowledge which he should have, and 

 I shall bear in mind the limited time which every active fruit 

 grower has for devoting to the special study of this subject. 

 While it would be a very handy thing for the fruit grower to 

 know the subject thoroughly, everyone realizes that this is as 

 impossible at the present as for every man to be an expert in 

 regard to the diseases which are likely to afflict his own body. 

 It is probable that we shall always need the advice of a physi- 

 cian however well informed we may be in regard to human 

 pathology. And yet it is true that the man who knows something 



