240 



SUCCESSFUL FARMING 



to understand when, why and how to give the necessary treatments. In 



recent years it has 

 been found possible 

 to overcome some 

 diseases by growing 

 plants that are dis- 

 ease-resistant and, 

 therefore, do not 

 need treatments. 



In this chap- 

 \ ter only the most 

 common and im- 

 portant plant dis- 

 eases in the United 

 States and Canada 

 are considered. 

 Brief descriptions 

 and condensed di- 

 rections for treat- 

 ment are given. 



Farmers should 

 always report the 

 presence of disease 

 on crops to the 

 agricultural experi- 

 ment station of the 

 state in which they 

 reside, and ask ad- 

 vice as to treat- 

 ment. The treat- 

 ment of some dis- 

 eases will vary 

 somewhat, depend- 

 ent upon the part 

 of the country in 

 which it occurs. 



The annual 



losses occasioned by 



insects to farm 



products are enor- 

 Anthkacnosb of Bean. 1 j j j 



mous and demand 

 The brown spots occur on both the pods and plants. They xu- a ++ en +i on D f all 

 are caused by spores coming in contact with the tender plant "| 

 tissues, where they germinate and give rise to serious damage. farmers. 



Cornell Agricultural Experiment Station Bulletin 255. 



