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 



/\ X ^V diseases by growing 



N-m i I Pl ants tnat a 1 " 6 dis- 



^% JW ^& ease-resistant and, 



tj \ K^\ /^ i tnor( ^ rc > ( l n t 



f !\ ^1 ^f\ /m neec ^ treatm ents. 



A ji'l /?' In this chap- 



1 jl I ter only the most 



jjfc.. -^^ ^ } common and im- 



portant plant dis- 

 eases in the United 

 States and Canada 



BB I^^HI 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- 

 ANTHRACNOSE OF BEAN. 1 

 rp, , mous and demand 



The brown spots occur on both the pods and plants. They fh tf pnt : nn n f Q n 

 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. 



